选择题冲刺训练
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高二物理期末冲刺选择题专项训练1. 下列说法正确的是A .电场线密的地方场强强B .电场线密的地方电势高C .某空间内场强处处为0,则该空间电势处处相等D .某点电势为0,则该点场强也一定为02.在等量异种电荷形成的电场中有O 、P 、M 三点,O 为电荷连线的中点;P 为连线中垂线上的一点;M点在连线上。
用E 和ϕ分别表示场强和电势。
以下结论正确的是A . E O =E P ϕO =ϕPB .E O > E P ϕO =ϕPC .E O <E M ϕO >ϕMD .E M > E P ϕM <ϕP 3.下列静电场公式适用于匀强电场的是A .q E P =ϕ B .W AB =qU AB C .q F E = D .2rkQ E = 4.如图所示电路,当滑动变阻器的滑动触头向左移动的过程中,三个灯泡的亮度变化情况是A .L 1变亮 B. L 2变暗 C .L 3变亮 D. 三个灯都变亮5.在北京上空有一电子从东向西高速运动,在地磁场的作用下电子偏转方向是A .正南 B. 南偏下 C .北偏上 D. 北偏下 6.某段通电导体放在匀强磁场中,下列说法正确的是A .若只将磁感应强度增为原来的2倍,所受安培力一定为原来的2倍B .若通电导体所受安培力为原来的2倍,一定是磁感应强度增为原来的2倍C .若通电导体所受安培力减小,说明导体中电流一定减小D .只有通电导体与磁感应强度方向垂直时,安培力才与导体垂直7.从电子枪射出的高速运动的电子流形成的电流为I ;电子的速度为v.则一段长为L 的电子流内有电子的个数为(每个电子带电量为e )A .L e vIB .ev ILC .eL IvD .vIL8.如图所示,A 、B 、C 为静电场中的三点。
将一电荷从A 点移到B 点,电场力做功W 1;从B 点移到C点,电场力做功W 2. 则下列说法中正确的是 A .将该电荷从A 点移到C 点,电场力做功W 1+W 2 B .若W 1>W 2,则一定有U AB >U BCC .若W 1>0,则电荷从A 点移到B 点的过程中,电荷的电势能一定增加D .若W 1+W 2=0,则C A ϕϕ=9.一圆形可伸缩的线圈套在条形磁铁的中间,条形磁铁与线圈平面垂直,如图所示。
2023年重庆高考冲刺训练数学试题及参考答案一、选择题(本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的)1.设集合A ={y |y =x },B ={x |y =x },全集为R ,则A ∩(∁R B )等于()A .[0,+∞)B .(-∞,0)C .{0,1}D .{(0,0),(1,1)}2.已知复数z 的共轭复数为z ,若z +z =4,(z -z )i =2(i 为虚数单位),则z 等于()A .2+iB .2-iC .-2+iD .-2-i3.已知|a |=5,b =(1,2),且a ∥b ,a ·b <0,则a 的坐标为()A .(1,2)B .(-1,2)C .(1,-2)D .(-1,-2)4.甲、乙、丙三人参加社区义工活动,每人从编号为1到6的社区中任选一个,所选社区编号数各不相同且不相邻,则不同的选择方案的种数为()A .12B .24C .36D .485.已知数列{a n }满足a 1=2,S n +1=2(1+S n ),若a 6是a m ,a 2n 的等比中项,m ,n ∈N *,则m +2n 等于()A .12B .123C .22D .46.如图所示,F 1,F 2是双曲线C :x 2a 2-y 2b 2=1(a >0,b >0)的左、右焦点,过F 1的直线与C 的左、右两支分别交于A ,B 两点.若|AB |∶|BF 2|∶|AF 2|=3∶4∶5,则双曲线的离心率为()A .2B .15 C.13 D.37.如图,已知三棱锥P -ABC 的四个顶点都在球O 的表面上,PA ⊥平面ABC ,AC =BC =2,AB =2,球心O 到平面ABC 的距离为3,则球O 的体积为()A.32π3B.16π3C .16πD .32π8.已知f(x)=x(l n x-a),不等式f(x)≥x2-e x-1恒成立,则实数a的取值范围是() A.(-∞,-1]B.(-∞,0]C.(-∞,1]D.(-∞,e]二、选择题(本大题共4小题,每小题5分,共20分.在每小题给出的四个选项中,有多项符合题目要求的.全部选对得5分,部分选对得2分,有选错的得0分)9.已知函数f(x)=sin2x+3cos2x,则下列四个命题正确的是()A.f(x)的最小值为-2B.f(x)向右平移π3个单位长度后得到的函数是奇函数C.f(x)在0,π12上单调递增D.f(x)关于直线x=7π12对称10.已知x>0,y>0,且x+y+xy-3=0,则()A.x y的取值范围是[1,9]B.x+y的取值范围是[2,+∞)C.x+4y的最小值是3D.x+2y的最小值是42-311.有两个箱子,第1个箱子有3个白球,2个红球,第2个箱子有4个白球,4个红球,现从第1个箱子中随机地取1个球放到第2个箱子里,再从第2个箱子中随机取1个球放到第1个箱子里,则下列判断正确的是()A.从第2个箱子里取出的球是白球的概率为2345B.从第2个箱子里取出的球是红球的概率为2245C.若从第2个箱子里取出的球是白球,则从第1个箱子里取出的是白球的概率为1523D.两次取出的球颜色不同的概率为5912.如图,正方体ABCD-A1B1C1D1的棱长为a,线段B1D1上有两个动点E,F,且EF=2a2.则下列结论正确的是()A.当E与D1重合时,异面直线AE与BF所成的角为π3B.三棱锥B-AEF的体积为定值C.EF在平面ABB1A1内的射影长为a2D.当E向D1运动时,二面角A-EF-B的平面角保持不变三、填空题(本大题共4小题,每小题5分,共20分)13.在的二项展开式中,所有项的系数之和为81,则常数项为________.14.设曲线y=12x2在点A1,12y=x l n x在点P处的切线互相平行,则点P的坐标为________.15.以模型y=c e k x(c>0)去拟合一组数据时,设z=l n y,将其变换后得到经验回归方程z =2x-1,则c=________.16.在△ABC中,AB=2,AC=23,BC=4,点O为△ABC的外心,则AO→·BC→=________,P是△ABC外接圆圆O上一动点,则PA→·(PB→+PC→)的最小值为________.四、解答题(本大题共6小题,共70分,解答应写出文字说明、证明过程或演算步骤) 17.(10分)在①a3+a11=20,②a3S10=310这两个条件中任选一个,补充到下面问题中,若1a n a n+1n∈N*)的前2023项和;若问题中的数列不存在,说明理由.问题:是否存在正项等差数列{a n}(n∈N*),其前n项和为S n,且a1=1,________?18.(12分)在△ABC中,内角A,B,C所对的边分别为a,b,c,△ABC的面积为S,已知a c o s C+c c o s A=3,a=2b.(1)求a;(2)若S=312(a2+c2-b2),求A.19.(12分)如图,在四棱锥P-ABCD中,底面ABCD是边长为2的正方形,△PAB为正三角形,且侧面PAB⊥底面ABCD,M为PD的中点.(1)求证:PB∥平面ACM;(2)求直线BM与平面PAD所成角的正弦值.20.(12分)某新华书店将在六一儿童节进行有奖促销活动,凡在该书店购书达到规定金额的小朋友可参加双人PK赢取“购书券”的游戏.游戏规则为:游戏共三局,每局游戏开始前,在不透明的箱中装有5个号码分别为1,2,3,4,5的小球(小球除号码不同之外,其余完全相同).每局由甲、乙两人先后从箱中不放回地各摸出一个小球(摸球者无法摸出小球号码).若双方摸出的两球号码之差为奇数,则甲被扣除2个积分,乙增加2个积分;若号码之差为偶数,则甲增加n(n∈N*)个积分,乙被扣除n个积分.PK游戏开始时,甲、乙的初始积分均为零,PK游戏结束后,若双方的积分不等,则积分较大的一方视为获胜方,将获得“购书券”奖励;若双方的积分相等,则均不能获得奖励.(1)设PK游戏结束后,甲的积分为随机变量ξ,求ξ的分布列;(2)以(1)中的随机变量ξ的均值为决策依据,当游戏规则对甲获得“购书券”奖励更为有利时,记正整数n的最小值为n0.①求n0的值,并说明理由;②当n=n0时,求在甲至少有一局被扣除积分的情况下,甲仍获得“购书券”奖励的概率.21.(12分)在平面直角坐标系中,已知F为抛物线C:y2=2px(p>0)的焦点,点P(t,s)(s>0)为抛物线C上一点,P关于x轴对称的点为Q,且△OPQ和△OPF的面积分别为16和2.(1)求C的方程;(2)设点D(a,2),A,B为抛物线C上不同的三点,直线DA,DB的倾斜角分别为α,β,且满足tanα+tanβ=1,证明:直线AB经过定点.22.(12分)已知函数f(x)=ln x+ax-b(其中a,b为参数).(1)求函数f(x)的单调区间;(2)若a=1,函数g(x)=f(x e x)有且仅有2个零点,求b的取值范围.参考答案1.B 2.B 3.D4.B5.A6.C7.A[如图,因为AC =BC =2,AB =2,所以AC 2+BC 2=AB 2,所以AC ⊥BC .因为PA ⊥平面ABC ,AB ,BC ⊂平面ABC ,所以PA ⊥AB ,PA ⊥BC .又AC ∩PA =A ,PA ,AC ⊂平面PAC ,所以BC ⊥平面PAC ,所以BC ⊥PC ,所以球心O 是PB 的中点.取AB 的中点D ,连接OD ,则OD ∥PA ,所以OD ⊥平面ABC ,所以OD = 3.设球O 的半径为R ,在Rt △ODB 中,R =OB =OD 2+DB 2=(3)2+12=2,所以球O 的体积为43πR 3=43×π×23=32π3.]8.B[由题意可知x >0,由f (x )≥x 2-e x -1,可得a ≤e x -1x+l n x -x .∵e x -1x +l n x -x =1e ·e x x +l n x e x ,令t =e xx ,则t ′=e x x -e x x 2=e x (x -1)x 2,∴t =e xx在(0,1)上单调递减,在(1,+∞)上单调递增,∴t ≥t (1)=e ,因此令φ(t )=1e t +ln 1t =1e t -ln t (t ≥e),φ′(t )=t -e t e ≥0,∴φ(t )在[e ,+∞)上单调递增,故φ(t )≥φ(e)=0,∴a ≤0.]9.ACD 10.BD[因为x >0,y >0,所以x +y ≥2xy ,所以3-xy ≥2xy ,解得0<xy ≤1,即0<xy ≤1,故A 错误;因为x >0,y >0,所以x y ,所以3-(x +y ),即(x +y )2+4(x +y )-12≥0,解得x +y ≥2,故B 正确;因为x +y +x y -3=0,所以x =-y +3y +1=-1+4y +1,则x +4y =-1+4y +1+4y =4y +1+4(y +1)-5≥2×4-5=3,当且仅当4y +1=4(y +1),即y =0时等号成立.因为y >0,所以x +4y >3,故C 错误;x +2y =-1+4y +1+2y =4y +1+2(y +1)-3≥42-3,当且仅当4y +1=2(y +1),即y =2-1时等号成立,故D 正确.]11.ABC[从第2个箱子里取出的球是白球的概率为35×59+25×49=2345,故A 正确;从第2个箱子里取出的球是红球的概率为35×49+25×59=2245,故B 正确;设从第2个箱子取出的球是白球为事件A ,从第1个箱子取出的球是白球为事件B ,则P (B |A )=P (AB )P (A )=35×592345=1523,故C 正确;两次取出的球颜色不同的概率为35×49+25×49=49,故D 错误.]12.BCD[当E 与D 1重合时,因为EF =22a ,此时F 为B 1D 1的中点,记BD中点为O ,连接D 1O ,如图,由正方体性质可知,BO ∥D 1F ,BO =D 1F ,所以四边形BOD 1F 为平行四边形,所以D 1O ∥BF ,所以AE 与BF 所成的角为∠AD 1O .又D 1O=6a 2,AD 1=2a ,AO =2a 2,所以cos ∠AD 1O =3a 22+2a 2-a 222×6a2×2a=32,故A 错误;V B -AEF =V A -BEF ,易知点A 到平面BB 1D 1D 的距离和点B 到直线B 1D 1的距离为定值,且EF =2a2为定值,所以三棱锥A -BEF 的体积为定值,故B 正确;易知∠A 1B 1D 1=π4,EF 在平面ABB 1A 1内的射影在A 1B 1上,所以射影长为2a 2×cos π4=a2,故C 正确;二面角A -EF -B 即为二面角A -B 1D 1-B ,显然其平面角不变,故D 正确.]13.8;14.(1,0);15.1e 解析由z =l n y ,得l n y =2x -1,y =e 2x -1=e -1·e 2x ,所以c =e -1=1e.16.40解析因为AB 2+AC 2=BC 2,所以AB ⊥AC ,所以O 是BC 的中点.以A 为原点,AB ,AC 所在直线分别为x 轴、y 轴建立平面直角坐标系,如图所示,则A (0,0),B (2,0),C (0,23),O (1,3),AO →=(1,3),BC →=(-2,23),所以AO →·BC →=4.圆O 的方程为(x -1)2+(y -3)2=4.设P (x ,y ),则PA →=(-x ,-y ),PB →=(2-x ,-y ),PC →=(-x ,23-y ),所以圆上点P d min =r -1=2-1=1,所以PA →·(PB →+PC →)的最小值为2×12-2=0.17.解若选择①1=1,3+a 11=a 1+2d +a 1+10d =20,所以d =32,所以a n =1+(n -1)×32=32n -12.由a 3S 10=(1+2d+10×92d 310,得d =32(舍负),因此a n =1+(n -1)×32=32n -12.因为1a n a n +1=所以1a 1a 2+1a 2a 3+1a 3a 4+…+1a 2023a 2024=-1a 2+1a 2-1a 3+…+1a 2023=23×=40466071.18.解(1)在△ABC 中,由a cos C +c cos A =3及余弦定理,可得a ·a 2+b 2-c 22ab +c ·b 2+c 2-a 22bc =3,即2b 2=23b ,则b =3,而a =2b ,所以a = 6.(2)由S =312(a 2+c 2-b 2),得S =312×2ac ×cos B =36ac cos B ,又S =12ac sin B ,所以12ac sin B =36ac cos B ,则tan B =33,因为B ∈(0,π),故B =π6,根据a =2b ,得sin A =2sin B =22,又A >B ,A ∈(0,π),所以A =π4或3π4.19.(1)证明连接BD 交AC 于点N ,连接MN ,如图,在正方形ABCD 中,N 为BD 的中点,而M 为PD 的中点,则PB ∥MN ,而MN ⊂平面ACM ,PB ⊄平面ACM ,所以PB ∥平面ACM .(2)解取AB 的中点O ,连接PO ,如图,在正△PAB 中,PO ⊥AB ,因为侧面PAB ⊥底面ABCD ,侧面PAB ∩底面ABCD =AB ,PO ⊂侧面PAB ,则PO ⊥平面在平面ABCD 内,过点O 作OE ⊥AB 交CD 于点E ,则射线OB ,OE ,OP 两两垂直,以O 为原点,射线OB ,OE ,OP 分别为x ,y ,z 轴的非负半轴建立空间直角坐标系,则B (1,0,0),A (-1,0,0),D (-1,2,0),P (0,0,3),-12,1AD →=(0,2,0),AP →=(1,0,3),BM →-32,1设平面PAD 的法向量为m =(x 1,y 1,z 1)·AD →=2y 1=0,·AP →=x 1+3z 1=0,令z 1=1,得m =(-3,0,1),设直线BM 与平面PAD 所成的角为θ,则sin θ=|cos 〈m ,BM →〉|=|m ·BM →||m ||BM →|=232×2=32,所以直线BM 与平面PAD 所成角的正弦值为32.20.解(1)记“一局游戏后甲被扣除2个积分”为事件A ,“一局游戏后乙被扣除n 个积分”为事件B ,由题意可知P (A )=C 12C 13A 22A 25=35,则P (B )=1-P (A )=25,当三局均为甲被扣除2个积分时,ξ=-6,当两局为甲被扣除2个积分,一局为乙被扣除n 个积分时,ξ=n -4,当一局为甲被扣除2个积分,两局为乙被扣除n 个积分时,ξ=2n -2,当三局均为乙被扣除n 个积分时,ξ=3n ,所以P (ξ=-6)=27125,P (ξ=n -4)=C 23×25=54125,P (ξ=2n -2)=C 13×35×=36125,P (ξ=3n )=8125,所以随机变量ξ的分布列为ξ-6n -42n -23n P2712554125361258125(2)①由(1)易得E (ξ)=(-6)×27125+(n -4)×54125+(2n -2)×36125+3n ×8125=6n -185,显然甲、乙双方的积分之和恒为零,当游戏规则对甲获得“购书券”奖励更为有利时,则需E (ξ)=6n -185>0,所以n >3,即正整数n 的最小值n 0=4.②当n =4时,记“甲至少有一局被扣除积分”为事件C ,则P (C )=1=117125,由题设可知若甲获得“购书券”奖励,则甲被扣除积分的局数至多为1,记“甲获得‘购书券’奖励”为事件D ,易知事件CD 为“甲恰好有一局被扣除积分”,则P (CD )=C 13×35×=36125,所以P (D |C )=P (CD )P (C )=36125×125117=413,即在甲至少有一局被扣除积分的情况下,甲仍获得“购书券”奖励的概率为413.21.(1)解由题意知|PQ |=2s ,所以△OPQ 的面积为12×t ×2s =ts ,则ts =16.①又因为焦点|OF |=p 2,则△OPF 的面积为12×p 2×s =ps 4,则ps4=2.②由①②联立解得t =2p ,s =8p,则p将P 点坐标代入抛物线方程得=2p ·2p ,解得p =2,故C 的方程为y 2=4x .(2)证明将D (a ,2)代入抛物线C 的方程得22=4a ,解得a =1,所以D (1,2).设A (x 1,y 1),B (x 2,y 2),直线AB 的方程为x =my +n ,=my +n ,2=4x ,消去x 得y 2-4my -4n =0,所以y 1+y 2=4m ,y 1y 2=-4n .因为tan α+tan β=1,即k DA +k DB =1,所以y 1-2x 1-1+y 2-2x 2-1=1,所以y 1-2y 214-1+y 2-2y 224-1=4y 1+2+4y 2+2=1,整理得y 1y 2-2(y 1+y 2)-12=0,所以-4n -2×4m -12=0,则n =-2m -3,所以直线AB 的方程为x =my -2m -3,即x +3=m (y -2),所以直线AB 经过定点(-3,2).22.解(1)函数f (x )的定义域为(0,+∞),f ′(x )=x -ax2.当a ≤0时,f ′(x )>0,所以f (x )的单调递增区间为(0,+∞),无单调递减区间;当a >0时,令f ′(x )>0,解得x >a ,令f ′(x )<0,解得0<x <a ,11所以f (x )的单调递减区间为(0,a ),单调递增区间为(a ,+∞).(2)当a =1时,g (x )=f (x e x )=ln x e x +1x e x -b =ln x +x +1x ex -b ,g ′(x )=1x +1-x +1x 2e x =(x +1)(x e x -1)x 2ex .令g ′(x )=0,则x e x =1(x =-1舍去),令h (x )=x e x -1(x >0),则h ′(x )=(x +1)e x >0,所以h (x )在(0,+∞)上单调递增.又=12e -1<0,h (1)=e -1>0,且函数h (x )在(0,+∞)上的图象是连续不断的曲线,所以根据零点存在定理,存在唯一的x 0h (x 0)=x 00e x -1=0,并且当x ∈(0,x 0)时,h (x )<0,当x ∈(x 0,+∞)时,h (x )>0,所以当x ∈(0,x 0)时,g ′(x )<0,函数g (x )单调递减;当x ∈(x 0,+∞)时,g ′(x )>0,函数g (x )单调递增,所以g (x )min =g (x 0)=ln x 0+x 0+1e x x 00-b =1-b .因为函数g (x )有且仅有2个零点,所以必须有g (x )min <0,即b >1.下面证明当b >1时,函数g (x )有且仅有2个零点.因为g (x 0)=1-b <0,g (b )=ln b +1b eb >0,且g (x )在(x 0,+∞)上单调递增且连续,所以g (x )在(x 0,+∞)上有且仅有1个零点,因为g (x )=f (x e x )=ln x e x +1x e x -b ,令x e x =t (0<t <x 0),则F (t )=ln t +1t-b .因为b >1,所以0<e -b <1e <12,F (e -b )=ln e -b +e b -b =e b -2b ,令φ(b )=e b -2b ,b >1,显然φ(b )=e b -2b 在(1,+∞)上单调递增,所以φ(b )=e b -2b >e -2>0,又g (x 0)=1-b <0,所以g (x )在(0,x 0)上有且仅有1个零点.综上,b >1.。
2024年广州市普通高中毕业班5月冲刺训练一、选择题:本大题共16小题,每小题3分,共48分。
在每小题列出的四个选项中,只有一项符合题目要求。
茶产业为福建永泰县传统经济产业,根据气象部门预测,今年全县春茶产茶量较2023年增长10%。
近年来,为推动产业提质增效,该县在把过去的“柴炒茶”升级为“电炒茶”,实现全天候智能控温。
据此完成1~2题。
1.2024年春茶产量增加的主要原因是A.昼夜温差大 B.气温回升快C.云雾天气多 D.日照时间长2.永泰县将“柴炒茶”升级为“电炒茶”有利于①降低设备成本②减少环境污染③提高茶叶品质④增加茶叶产量A.①② B.②③C.③④ D.①④北京时间2024年3月25日0时46分,“鹊桥二号”中继星顺利进入环月轨道飞行。
该中继星将与登月探测器共同完成探月任务。
图1示意中继星与地球、月球的轨道关系。
据此完成3~4题。
图13.“鹊桥二号”中继星服务的登月探测器主要探测月球的A.背向地球面 B.正对地球面C.月海的深处 D.环形山凹处4.“鹊桥二号”中继星为登月探测器提供的“中继”功能是A.发电充能B.定位导航C.链接通信D.设备维修2024年3月,广东省白溪自然保护区迎来首批人工培植的濒危植物大苞山茶。
大苞山茶仅零星分布在广东和香港地区,其数量受自然条件和人为干扰共同影响,种子自然掉落后,会在母株周围成片萌发,但存活率较低。
据此完成5~7题。
5.关于大苞山茶的叙述正确的是A.落叶阔叶树种,喜酸性土壤B.常绿硬叶树种,叶片面积小C.针阔混交树种,耐大风荫蔽D.常绿阔叶树种,喜暖湿气候6.导致大苞山茶成为濒危植物的原因有①种子易受昆虫啃食②气候变化不宜生长③人为采伐干扰较多④人工培植结实较少A.①④ B.②③C.①③ D.②④7.为提高母株周围幼苗存活率,下列措施合理的是A.大面积施用杀虫药B.人工降低种间竞争C.大量移入成年植株D.主动减少人工干预山东省是我国重要的工业基地,科学评价山东省绿色低碳循环发展水平,对推动山东省高质量发展先行区建设具有重要意义。
一、选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知集合A={x|x<2},B={x|3﹣2x>0},则()A.A∩B={x|x<} B.A∩B=∅C.A∪B={x|x<} D.AUB=R2.下列各式的运算结果为纯虚数的是()A.i(1+i)2B.i2(1﹣i)C.(1+i)2D.i(1+i)3.如图,正方形ABCD内的图形来自中国古代的太极图,正方形内切圆中的黑色部分和白色部分关于正方形的中心成中心对称.在正方形内随机取一点,则此点取自黑色部分的概率是()A.B.C.D.4.已知F是双曲线C:x2﹣=1的右焦点,P是C上一点,且PF与x轴垂直,点A的坐标是(1,3).则△APF的面积为()A.B.C.D.5.函数f(x)在(﹣∞,+∞)单调递减,且为奇函数.若f(1)=﹣1,则满足﹣1≤f(x ﹣2)≤1的x的取值范围是()A.[﹣2,2] B.[﹣1,1] C.[0,4] D.[1,3]6.如图,己知正方体1111ABCD A B C D -,M ,N 分别是1A D ,1D B 的中点,则( )A .直线1A D 与直线1DB 垂直,直线//MN 平面ABCD B .直线1A D 与直线1D B 平行,直线MN ⊥平面11BDD BC .直线AD 与直线1D B 相交,直线//MN 平面ABCD D .直线1A D 与直线1D B 异面,直线MN ⊥平面11BDD B7.△ABC 的内角A ,B ,C 的对边分别为a ,b ,c ,已知sinB+sinA (sinC ﹣cosC )=0,a=2,c=,则C=( ) A . B .C .D .8.已知数列{}n a 满足11a =,1*)n a n N +=∈.记数列{}n a 的前n 项和为n S ,则() A .100132S << B .10034S << C .100942S <<D .100952S <<二、选择题:本题共4小题,每小题5分,共20分.在每小题给出的选项中,有多项符合题目要求.全部选对的得5分,有选错的得0分,部分选对的得3分.9.十六世纪中叶,英国数学家雷科德在《砺智石》一书中首先把“=”作为等号使用,后来英国数学家哈利奥特首次使用“<”和“>”符号,并逐渐被数学界接受,不等号的引入对不等式的发展影响深远.若a b <,则下列结论错误的是( ) A .11a b> B .22a b < C .1122ab⎛⎫⎛⎫> ⎪ ⎪⎝⎭⎝⎭D .ln()0b a ->10.已知某物体作简谐运动,位移函数为()2sin()(0,)2f t t t πϕϕ=+≥<,且4()23f π=-,则下列说法正确的是( ) A .该简谐运动的初相为6πB .函数f t 在区间0,2π⎛⎫⎪⎝⎭上单调递增C .若[0,]2t π∈,则()[1,2]f t ∈D .若对于任意12,0t t >,12t t ≠,有12()()f t f t =,则12()2f t t +=11.已知函数2()1xf x x =+,则下列说法中正确的有( ) A .函数f (x )的值域为11,22⎡⎤-⎢⎥⎣⎦B .当0,2x π⎛⎫∈ ⎪⎝⎭时,y =f (x )与y =tan x 的图象有交点C .函数3423()59x xg x x x -=-+的最大值为12 D .当x ≥0时,()1x f x e ≤-恒成立12.信息熵是信息论中的一个重要概念.设随机变量X 所有可能的取值为1,2,,n ,且1()0(1,2,,),1ni i i P X i p i n p ===>==∑,定义X 的信息熵21()log ni i i H X p p ==-∑.( )A. 若n =1,则H (X )=0B. 若n =2,则H (X )随着1p 的增大而增大C. 若1(1,2,,)i p i n n==,则H (X )随着n 的增大而增大D. 若n =2m ,随机变量Y 所有可能的取值为1,2,,m ,且21()(1,2,,)j m j P Y j p p j m +-==+=,则H (X )≤H (Y )三、填空题:本题共4小题,每小题5分,共20分.13.已知向量,的夹角为60°,||=2,||=1,则|+2|= .14.曲线y=x2+在点(1,2)处的切线方程为15.已知F是双曲线C:x2﹣=1的右焦点,P是C的左支上一点,A(0,6).当△APF周长最小时,该三角形的面积为..16. 在平面四边形ABCD中,∠A=∠B=∠C=75°.BC=2,则AB的取值范围是.四、解答题(本题共6小题,共70分,其中第16题10分,其它每题12分,解答应写出文字说明、证明过程或演算步骤。
历年中考真题选择题专练及答案(二)总分100(每小题1分)1. Tom usually goes fishing __ Sunday morning.A. atB. onC. for2. —Peter, is this your pen?—Yes, it' s __. Many thanks. I looked for it everywhere.A. mineB. meC. I3. —Where did you go yesterday, Rick?—I went to see a because I had a cold.A. teacherB. doctorC. reporter4. Lady Gags is very popular, and she by many boys and girls at school.A. lovesB. is lovingC. is loved5. —Excuse me, whose Japanese book is this?—It be Tom ' s. In our class, only he is studying Japanese.A. mustB. can'tC. would6. It' s interesting that there are many people speak French in Canada.A. whichB. whereC. who7. Parents often ask their kids __ their internet friends because the kids may be in danger.A. to meetB. not to meetC. meeting8. Look! Peter TV happily, but his parents are busy in the kitchen.A. is watchingB. watchesC. watched9. —Hey, Tony, You look so tired today.—-I __ until 12 o' clock last night for the math test.A. woke upB. stayed upC. grew up10. My cousin knows a lot about geography, __ he is only four years old.A. becauseB. soC. although11. Some scientists think that it will take __ of years to make robots do most work for humans.A. hundredsB. hundredC. thousand12. Please keep quiet, everybody! I have important to tell you.A. nothingB. somethingC. everything13. This T-shit is not large enough. Please show me a one,A. largeB. largerC. largest14. —I can' t find Mike. Could you tell me ?—He is in the library.A. what h e isB. how he isC. where he is15. —Jack, let's go to see the movie Harry Potter.—Oh, I it many times. So I don' t want to see it.A. have seenB. seeC. will see16. —I want to know when Mr. Brown will arrive.—When he , I will tell you.A. will arriveB. arrivedC. arrives17. —I’m very tired. I can’t go any further, Jenny.—,Tommy. You can do it!A. Come onB. You are rightC. That’s OK18. he has little knowledge, the old worker has a lot of experience.A. Although.B. Because.C. If19. One of the advantage of playing guitar is that it can give you a great deal of pleasure.A. aB. theC. 不填20. We forgot to bring our tickets , but please let us enter, ?A. do youB. shall weC. will you21. —Have you known Dr. Jackson for a long time?—Yes, since she the Chinese Society.A. joinedB. joinsC. has joined22. When asked what they needed most, the kids said they wanted to important and loved.A. turnB. soundC. feel23. Sarah had her washing machine yesterday, but it doesn’t work now.A. repairB. repairedC. to repair24. Tony is very nice. He is the most enjoyable person I .A. meet everB. have ever metC. had ever met25. A typhoon hit this area with heavy rains and winds strong as what happened in 2008.A. asB. soC. too26. In order to finish the project, we’ll have to work hours a day.A. more twoB. two moreC. two another27. If you can’t decide which of the two books to borrow, why don’t you take ? I won’t read themthis week.A. allB. eitherC. both28. —Do you have any problems if you five minutes to read?—Well, I’m thinking about the new words. There are too many.A. giveB. are givenC. will be given29. The digital camera it very popular, but some still too much.A. costB. spendC. pay30. —Have you got any idea for the summer vacation?—I don’t mind . It will be OK if there is sun, sea and beach.A. where do we goB. where we goC. when we go31. —It’s a top secret.—Yes, I see. I will keep the secret you and me.A. withB. amongC. between32.—- Which do you like ______, summer or winter? —I’d prefer winter.A better B. best C. good D. well33. Excuse me, would you mind _______ your voice down, please?A. to keepB. keepingC. keepD. kept34. I’m not sure when the plane will __________ and when it will land.A. take offB. run offC. open upD. stay up35. Hurry up! If we miss ____ last bus, we’ll have to get home by _____taxi.A. a;不填B. the; aC. the;不填D. a; a36. When I called the bus service, I _______ that there was no more bus.A. was tellingB. was toldC. has toldD. had told37. School students _______ smoke because it is against the school rules.A needn’t B. couldn’t C. won’t D. mustn’t38. Please tell me the truth, _______ I can decide how to help you next step.A. soB. orC. butD. for39.You were ________ to close the windows. Why were you so careless?A. allowedB. believeC. supposedD. caused40.—-Hey, July.—- ____________?—- I need your help.A. Oh, reallyB. What’s upC. How are youD. All right41. Linda has bought a large house _______ a swimming pool.A with B. in C. on D. from42. I hope Tim can come to my birthday party. Then we ____ a much happier time.A. haveB. hadC. will haveD. have had43. —- What about going to the South Lake for a picnic next weekend?—- OK. But I’m not sure _______ it will rain.A. whyB. whereC. whenD. whether44. David suddenly felt nervous. ___________, it was his first time to go on stage.A. At leastB. After allC. At onceD. At all45. We make it a rule that each of us _________ the bedroom one day a week.A. has cleanedB. have cleanedC. cleansD. clean46. _________ this rock music, please. I’m afraid some people can’t stand the noise!A Stopping B. stop C. Stops D. Stopped47. Everyone in the hall knew me, but I did not know ________.A. himB. herC. themD. those48. _____I was in the US, I made a lot of American friends.A. whileB. AlthoughC. UnlessD. Until49. I began watching here an hour ago, but now nothing ________ yet.A. happensB. will happenC. happenedD. has happened50. I can never forget the stories ________ my grandma told me.A. whatB. whoC. themD. that51. –Mom,I have done a good job in today's exam.—Wonderful! That's a good_____. Come on, and you will do better in the following exams.A. startB. informationC. messageD. idea52. Mike, _____ iPad is on the bed, but where is_______?A. hers; hisB. your; mineC. yourself; himD. her; your53. He is so poor. The________ thing is a black and white TV set in his house.A cheapest B. cheaper C. most expensive D. more expensive54. —I wonder how you have improved your spoken English so fast, Li Lei.—________ chatting with my foreign friend, Mike. He's been here for some time, you know.A. ByB. WithC. InD. On55. He began to like ____________ music from very early age, and __________ music of the TV play A Step Into the Past(《寻秦记》)was created by him.A. the;theB. a;theC.不填;theD. 不填;不填56. —When can 1 see Tom?—He is watching an English film. It began at 8, and __________ on for another 30 minutes.A. has beenB. wasC. had beenD. will be57. The little girl comes to the Children's Palace _________ the guitar on Sundays.A. practicing to playB. to practice to playC. to practice playingD. practices playing58. It always ____the old man one hour to walk in Daqian Park after supper, which makes him healthy.A. costsB. paysC. spendsD.takes59. We should choose a healthy life style, _______ a low carbon(低碳) life.A. recentlyB. nearlyC. hardlyD. especially60. The monitor had _________ the test papers before the teacher came into the classroom.A. given outB. given upC. got overD. got along with61. Mrs. Li has never been to the top of Mt Emei to see the sunrise since Mr. Li left Emei city, ______?A. hasn't sheB. didn't heC. has sheD. did he62. Gorge asked me when he passed by just now_______.A. what time did the film beginB. where Tom had goneC. whether have 1 finished the reportD. how 1 will go to Chengdu63. Li Lei realized __________ necessary for him to get up early to do some exercise for he found he was getting fatter and fatter.A. itB. thatC. oneD. this64. —Excuse me. Could I get into the room to get my book back?— __________, but no one except the head master is allowed to enter it from yesterday on.A. Of course, go aheadB. All rightC. I'm sorryD. Never mind65. —Oh, he_________ be Li Ming. I know him well.—No, it _________ be him. He's gone to Neijiang for a meeting.A. can; doesn't have toB. must; can'tC. need; mustn'tD. may; may not66. He was reading yesterday's China Daily_________ he was wanted on the phone.A. asB. afterC. whileD. when67._____ _____ is going to see the film Titanic again because this year marks the 100 years since the Titanic sank(沉没) in the ocean.A. Not only Lily but also her parentsB. Lily, with her parents,C. Both Ben and DianaD. Neither Ben nor Diana68. A professor(教授) from a university ________ is tired of the city life has moved up to a high mountain.A. whoB. whichC. whomD. where69. Sarah's father is wondering if he_ to the airport to meet her when she________ there.A. will go; arrivesB. goes; arrivesC. has gone; will arriveD. is going; arrived70. —________do you call your parents ?—Very of ten, and each time, five minutes.A. WhenB. How longC. How manyD. How often71. 请选出含/id/发音的单词:________A. wantedB. laughedC. lived72. "You can't have them all. You can choose the kite the toycar," said the mother.A. either; orB. not only; but alsoC. both; and73. — I hear your friend is visiting San Ya again. Is it the second time for him?— Yes, and he will come for time next spring.A. a thirdB. a secondC. the third74. — Li Na won the tennis championship in the French Open on June 4, 2011.— We take pride in her. She is the first Asian professional tennis player to win it.选出意思与划线部分相同的选项:A. are interested inB. are terrified ofC. are proud of75. -You aren't a student now, are you?—, don't you remember me in the classroom ten minutes ago?A. No; seeingB. Yes; seeingC. No; to see76. —When are you going to have your hair ?—This afternoon.A. cutB. to cutC. cutting77. It will be if you buy a return ticket on the train when you travel inEngland.A. much cheapB. more cheaplyC. much cheaper78. I think teenagers should drive. They are not serious enough.A. be allowed toB. not be allowed toC. not allow to79. —Can you tell me ?— By doing more exercises and speaking.A. how I can improve my EnglishB. how do I deal with my EnglishC. what's wrong with my English80. —Have you heard that some bad thing would happen in 2012?—Don't worry! The news be true.A. mustn'tB. may notC. needn't81. You should keep the window because the room is too hot.A. openB. openingC. opened82. Did you find very interesting to play volleyball?A. thisB. thatC. it83. — How soon can you finish this job?— Two days enough for me to finish the work. I need a week.A. isn'tB. aren'tC. is84. They have got such a table.A. round wooden brownB. round brown woodenC. brown round wooden85. — What's your favorite ?— Summer. Because I can swim in rivers.A. seasonB. subjectC. music86.—You are on the phone, Mary.— Yes, mum. .A. wanted; I'm comingB. called; I'm comingC. needed; I'll come87. — A subway will be built in our hometown before 2015.—! Will it pass my house?A. What an excited newsB. What exciting newsC. How exciting news88. — Jackie Chan has donated dollars to charity.— He is an example to us all.A. thousandB. thousands ofC. thousand of89. — Who also did this wonderful job, Uncle Wang?— It's .A. meB. IC. my90. Which of the following is caused by the earth's turning around the sun?A. The rising and setting (落下) of the sun and moon.B. The change of spring, summer, autumn and winter of the year.C. The change of the day and night.91. I think it's not polite to laugh others.A. inB. atC. over92. Your father used to eat meal, ?A. did youB. didn't youC. didn't he93. Practicing in groups is good _ _ us to learn English.A, at B. in C. for94. Don't up English. It's very important.A. giveB. hurry C, stay95. What would happen if he _ _ back h ome?A. goB. goesC. went96, It’s quite exciting me _ _ the Internet.A. for, surfB. for, to surfC. for, for surf97.—Is this your e-dictionary?—No, is in the backpack,A. mineB. yoursC. my98.—Math is too difficult, I nearly give it up.—Please don't, nothing is if you put your heart into it.A. importantB. impossibleC. interesting99. — _ _ weather! It's raining!—Bad luck! We can't go climbing today.A. What badB. How badC. What fine 100. I think should not he allowed to drive.A. sixteen years oldB. sixteen-year-oldC. sixteen-year-oldsKey : 历年中考真题选择题专练及答案(二)1. A2. A 3 .B 4. C 5. A6. C7. B8. A9. B 10.C11.A 12..B 13.B 14.C15.A16.C 17.A 18.A 19.B 20.C21.A 22.C 23.B 24.B 25.A26.B 27.C 28.B 29.A 30.B31.C 32.A 33.B 34.A 35.C36.B 37.D 38.A 39.C 40.B41.A 42.C 43.D 44.B 45.C46.B 47.C 48.A 49.D 50.D51.A 52.B 53.C 54.A 55.C56.D 57.C 58.D 59.D 60.A61.C 62.B 63.A 64.C 65.B66.D 67.B 68.A 69.A 70.D71.A 72.A 73.A 74.C 75.B76.A 77.C 78.B 79.A 80.B81.A 82.C 83.A 84.B 85.A86.A 87.B 88.B 89.A 90.B91. B 92.C 93.C 94.A 95.C96. B 97.A 98.B 99.A 100C。
精品基础教育教学资料,仅供参考,需要可下载使用!中考数学冲刺专题训练(附答案):三角形与四边形一、选择题(本大题共8个小题,每小题5分,共40分.在每小题给出的四个选项中,只有一个选项是符合题目要求的)1.一个等腰三角形的底边长是6,腰长是一元二次方程28150x x -+=的一根,则此三角形的周长是( ) A .16 B .12C .14D .12或16【答案】A 【解析】解方程28150x x -+=,得:3x =或5x =,若腰长为3,则三角形的三边为3、3、6,显然不能构成三角形; 若腰长为5,则三角形三边长为5、5、6,此时三角形的周长为16, 故选:A .2.如图,在△ABC 中,BE 是∠ABC 的平分线,CE 是外角∠ACM 的平分线,BE 与CE 相交于点E ,若∠A =60°,则∠BEC 是( )A .15°B .30°C .45°D .60°【答案】B 【解析】∵BE 是∠ABC 的平分线, ∴∠EBM=12∠ABC , ∵CE 是外角∠ACM 的平分线, ∴∠ECM=12∠ACM , 则∠BEC=∠ECM-∠EBM=12×(∠ACM-∠ABC )=12∠A=30°, 故选:B .3.如图,在△ABC 中,∠C =90°,AC =12,AB 的垂直平分线EF 交AC 于点D ,连接BD ,若cos ∠BDC =57,则BC 的长是( )A .10B .8C .3D .6【答案】D 【解析】∵∠C =90°,cos ∠BDC =57, 设CD =5x ,BD =7x , ∴BC =6x ,∵AB 的垂直平分线EF 交AC 于点D , ∴AD =BD =7x , ∴AC =12x , ∵AC =12, ∴x =1, ∴BC =6; 故选D.4.一个菱形的边长为6,面积为28,则该菱形的两条对角线的长度之和为( ) A .8 B .12C .16D .32【答案】C 【解析】 如图所示:四边形ABCD 是菱形,12AO CO AC ∴==, 12DC BO BD ==,AC BD ⊥, 面积为28,∴12282AC BD OD AO ⋅=⋅=① 菱形的边长为6,2236OD OA ∴+=②,由①②两式可得:222()2362864OD AO OD OA OD AO +=++⋅=+=,8OD AO ∴+=,2()16OD AO ∴+=,即该菱形的两条对角线的长度之和为16, 故选C .5.如图,点B 、F 、C 、E 在一条直线上,AB ∥ED ,AC ∥FD ,那么添加下列一个条件后,仍无法判定△ABC ≌△DEF 的是( )A .AB =DE B .AC =DF C .∠A =∠D D .BF =EC【答案】C 【解析】解:选项A 、添加AB=DE 可用AAS 进行判定,故本选项错误; 选项B 、添加AC=DF 可用AAS 进行判定,故本选项错误; 选项C 、添加∠A=∠D 不能判定△ABC ≌△DEF ,故本选项正确;选项D 、添加BF=EC 可得出BC=EF ,然后可用ASA 进行判定,故本选项错误. 故选C .6.如图,ABCD 中,对角线AC 、BD 相交于点O ,OE BD ⊥交AD 于点E ,连接BE ,若ABCD 的周长为28,则ABE ∆的周长为( )A .28B .24C .21D .14【答案】D 【解析】∵四边形ABCD 是平行四边形, ∴OB OD =,AB CD =,AD BC =, ∵平行四边形的周长为28, ∴14AB AD += ∵OE BD ⊥,∴OE 是线段BD 的中垂线, ∴BE ED =,∴ABE ∆的周长14AB BE AE AB AD =++=+=, 故选:D .7.如图,在ABCD 中,将ADC ∆沿AC 折叠后,点D 恰好落在DC 的延长线上的点E 处.若=60B ︒∠,=3AB ,则ADE ∆的周长为( )A .12B .15C .18D .21【答案】C 【解析】由折叠可得,90ACD ACE ︒∠=∠=,90BAC ︒∴∠=,又60B ︒∠=,30ACB ︒∴∠=,26BC AB ∴==,6AD ∴=,由折叠可得,60E D B ︒∠=∠=∠=,60DAE ︒∴∠=,ADE ∴∆是等边三角形, ADE ∴∆的周长为6318⨯=,故选:C .8.如图,在正方形ABCD 中,E 、F 分别是BC 、CD 上的点,且∠EAF =45°,AE 、AF 分别交BD 于M 、N ,连按EN 、EF 、有以下结论:①AN =EN ,②当AE =AF 时,BEEC=2﹣2,③BE+DF =EF ,④存在点E 、F ,使得NF >DF ,其中正确的个数是( )A .1B .2C .3D .4【答案】B 【解析】 ①如图1,∵四边形ABCD 是正方形,∴∠EBM =∠ADM =∠FDN =∠ABD =45°,∵∠MAN=∠EBM=45°,∠AMN=∠BME,∴△AMN∽△BME,∴AM MN BM EM=,∵∠AMB=∠EMN,∴△AMB∽△NME,∴∠AEN=∠ABD=45°∴∠NAE=∠AEN=45°,∴△AEN是等腰直角三角形,∴AN=EN,故①正确;②在△ABE和△ADF中,∵AB ADABE ADF90 AE AF︒=⎧⎪∠=∠=⎨⎪=⎩,∴Rt△ABE≌Rt△ADF(HL),∴BE=DF,∵BC=CD,∴CE=CF,假设正方形边长为1,设CE=x,则BE=1﹣x,如图2,连接AC,交EF于H,∵AE=AF,CE=CF,∴AC是EF的垂直平分线,∴AC⊥EF,OE=OF,Rt △CEF 中,OC =12EF =22x , △EAF 中,∠EAO =∠FAO =22.5°=∠BAE =22.5°, ∴OE =BE , ∵AE =AE ,∴Rt △ABE ≌Rt △AOE (HL ), ∴AO =AB =1, ∴AC =2=AO+OC ,∴1+22x =2, x =2﹣2,∴BE EC =1(22)22---=(21)(22)2-+=22; 故②不正确; ③如图3,∴将△ADF 绕点A 顺时针旋转90°得到△ABH ,则AF =AH ,∠DAF =∠BAH , ∵∠EAF =45°=∠DAF+∠BAE =∠HAE , ∵∠ABE =∠ABH =90°, ∴H 、B 、E 三点共线, 在△AEF 和△AEH 中,AE AE FAE HAE AF AH =⎧⎪∠=∠⎨⎪=⎩,∴△AEF ≌△AEH (SAS ), ∴EF =EH =BE+BH =BE+DF , 故③正确;④△ADN 中,∠FND =∠ADN+∠NAD >45°, ∠FDN =45°, ∴DF >FN ,故存在点E 、F ,使得NF >DF , 故④不正确; 故选B .二、填空题(本大题共4个小题,每小题6分,共24分)9.如图,在△ABC 中,以点B 为圆心,以BA 长为半径画弧交边BC 与点D ,连结AD ,若∠B =40°,∠C =36°,则∠DAC 的度数是____________.【答案】34° 【解析】由作图过程可知BD=BA , ∵∠B=40°, ∴∠BDA=∠BAD=12(180°-∠B)=70°, ∴∠DAC=∠BDA-∠C=70°-36°=34°. 故答案为34°. 10.如图,在矩形ABCD 中,1AB =,BC a =,点E 在边BC 上,且35BE α=.连接AE ,将ABE ∆沿AE 折叠,若点B 的对应点B '落在矩形ABCD 的边上,则 a 的值为________.【答案】53或53【解析】 分两种情况:①当点B '落在AD 边上时,如图1. 四边形ABCD 是矩形,90BAD B ︒∴∠=∠=,将ABE ∆沿AE 折叠,点B 的对应点B '落在AD 边上,1452BAE B AE BAD '︒∴∠=∠=∠=,AB BE ∴=,315a ∴=, 53a ∴=;②当点B '落在CD 边上时,如图2. ∵四边形ABCD 是矩形,90BAD B C D ︒∴∠=∠=∠=∠=,AD BC a ==.将ABE ∆沿AE 折叠,点B 的对应点B '落在CD 边上,90B AB E '︒∴∠=∠=,1AB AB '==,35EB EB a '==,2221DB B A AD a ''∴=-=-,3255EC BC BE a a =-=-=. 在ADB '∆与B CE '∆中,90A 90B AD EBC B DD C ︒︒⎧∠=∠=-∠'''⎨∠=∠=⎩, ADB B CE ''∴∆⋃∆,DB AB CE B E'''∴=,即2112355a a a -=,解得153a =,20a =(舍去). 综上,所求a 的值为53或53. 故答案为53或53. 11.如图,正方形ABCD 的边长为4,点E 是CD 的中点,AF 平分BAE ∠交BC 于点F ,将ADE ∆绕点A 顺时针旋转90°得ABG ∆,则CF 的长为_____.【答案】6-25 【解析】作FM AD M FN AG N ⊥⊥于,于 ,如图,易得四边形CFMD 为矩形,则4FM =∵正方形ABCD的边长为4,点是的中点,2DE ∴=,∴224225AE =+=∵△ADE 绕点A 顺时针旋转90°得△ABG ,∴252349090AG AE BG DE GAE ABG D ∠∠∠︒∠∠︒==,==,=,=,== 而90ABC ∠︒= , ∴点G 在CB 的延长线上,∵AF 平分∠BAE 交BC 于点F ,∴∠1=∠2,∴∠2+∠4=∠1+∠3,即F A 平分∠GAD , ∴FN =FM =4, ∵11••22AB GF FN AG =, ∴425254GF ⨯==, ∴4225625CF CG GF +=-=﹣=﹣ . 故答案为6-25.12.如图,在平面直角坐标系中,OA =1,以OA 为一边,在第一象限作菱形OAA 1B ,并使∠AOB =60°,再以对角线OA 1为一边,在如图所示的一侧作相同形状的菱形OA 1A 2B 1,再依次作菱形OA 2A 3B 2,OA 3A 4B 3,……,则过点B 2018,B 2019,A 2019的圆的圆心坐标为_____.【答案】(-32018,3)2019) 【解析】过A 1作A 1C ⊥x 轴于C ,∵四边形OAA1B是菱形,∴OA=AA1=1,∠A1AC=∠AOB=60°,∴A1C=32,AC=12,∴OC=OA+AC=32,在Rt△OA1C中,OA1=2213OC AC+=,∵∠OA2C=∠B1A2O=30°,∠A3A2O=120°,∴∠A3A2B1=90°,∴∠A2B1A3=60°,∴B1A3=23,A2A3=3,∴OA3=OB1+B1A3=33=(3)3∴菱形OA2A3B2的边长=3=(3)2,设B1A3的中点为O1,连接O1A2,O1B2,于是求得,O1A2=O1B2=O1B133)1,∴过点B1,B2,A2的圆的圆心坐标为O1(0,23,∵菱形OA3A4B3的边长为333,∴OA4=934,设B2A4的中点为O2,连接O2A3,O2B3,同理可得,O2A3=O2B3=O2B2=3=(3)2,∴过点B2,B3,A3的圆的圆心坐标为O2(﹣3,33),…以此类推,菱形OA2019A2020B2019的边长为(3)2019,OA2020=(3)2020,设B2018A2020的中点为O2018,连接O2018A2019,O2018B2019,求得,O2018A2019=O2018B2019=O2018B2018=(3)2018,∴点O2018是过点B2018,B2019,A2019的圆的圆心,∵2018÷12=168…2,∴点O2018在射线OB2上,则点O2018的坐标为(﹣(3)2018,(3)2019),即过点B2018,B2019,A2019的圆的圆心坐标为:(﹣(3)2018,(3)2019),故答案为:(﹣(3)2018,(3)2019).三、解答题(本大题共3个小题,每小题12分,共36分.解答应写出文字说明、证明过程或演算步骤)13.如图,矩形EFGH的顶点E,G分别在菱形ABCD的边AD,BC上,顶点F、H在菱形ABCD的对角线BD上.=;(1)求证:BG DEFH=,求菱形ABCD的周长。
抓分冲刺训练1一、选择题2.3)2x -(=( )A.36x -B.36xC. 38xD. 38x -3. 3. 一组数据1,6,5,2,1,则这组数据的极差是( )A.1B.3C. 2D. 54. 如图所示,在⊙O 中,∠BOC=70°,则∠D 的度数为( ).70A .140B .35C .30D 5. 下列所述图形中,是轴对称图形,但不是中心对称图形的是( )A. 矩形B. 平行四边形C. 正六边形D. 正三角形6.在-1,2,0(3)-,-2这四个数中,最小的数是( )A. -1B. 2C. 0(3)-D. -27 若关于x 的方程02x 2=--m x 有实数根,则实数m 的取值范围是( )A.m ≥-1B. .m ≤-1C.m <1D.m >-18.. 二元一次方程组⎩⎨⎧=+=+8272y x y x 的解为( )二、填空题11. 分解因式:a a x 42-= 12. 将0.000000 012 3用科学记数法表示为 13. 分式方程321+=x x 的解x = . 14. 如图,直线a ∥b ,∠3=40°,∠2=35°,则∠1的度数是 。
三、解答题(一)(本大题3小题,每小题6分,共18分)BC 17.(本题6分)计算:1)31( -2cos45º+ (π -3.14)0+ 1 2 8+(-1)3.19.如图,已知R t △ABC 中,∠CAB=90°。
(1)作△ABC BC 边上的高AD 。
(用尺规作图法,保留作图痕迹,不要求写作法)(2)在(1)的条件下,AC =5,cosB =54,则斜边BC 上的高AD =四、解答题(二)(本大题3小题,每小题7分,共2120.珠海市为了响应“低碳生活,环保节能”号召,投放了大量公租自行车供市民使用。
到2013年底,全市已有公租自行车8100辆,预计到2015年底将有公租自行车10000辆。
历年中考真题选择题专练及答案(一)总分100(每小题1分)1. —Peter has changed a lot, hasn’t he?—Yes. He used to the guitar , but now he is more in playing soccer.A. plays; interestedB. play; interestedC. play; interestingD. playing; interest2. —I have never been to Hawaii. What about Mike?—.A. So has heB. So he doesC. Neither he hasD. Neither has he3. — John, you go out to play until your homework .—OK, Mum.A. must; finishesB. can’t; is finishedC. can’t; has finishedD. needn’t; finishes4. —Would you please help me with my writing skills?—________.You can come to my office every Saturday.A. That’s all rightB. Not at allC. No problemD. No , thanks5. —Maria, here is my new house.—Wow, you have __ beautiful house !A. aB. theC. 不填6. —I just have cup of milk for breakfast.—That’s not enough.A. a; aB. the; theC. a; 不填7. John always says that he likes apples of all the .A. vegetablesB. fruitsC. drinks8. —Are your shoes expensive?—No, I only five dollars on them.A. usedB. costC. spent9. —Is this kite , Tom?—Yes, it’s mine. It’s made by .A. yours; myselfB. mine; myselfC. ours; himself10. —Excuse me, I want to buy some milk. Where can I find a supermarket?—Oh, I know not far from my home.A. itB. thatC. one11. —What would you send to your sister as the Christmas gift?—I haven’t decided yet. I send her a hand bag.A. shallB. mayC. must12. —Can you see some people are waiting the library?—Yes. They are standing in a queue in front of its gate.A. aroundB. insideC. outside13. It is not so as yesterday, so there are people sitting in the square.A. cold; fewerB. warm; moreC. cold; more14. Peter is busy at school, but he never forgets exercise every day.A. working; doingB. working; to doC. at work; doing15. The girl I just talked with is Ben’s sister.A. whomB. whichC. she16. —Why did you leave your city last year?—Because I a new job in another city.A. offeredB. am offeredC. was offered17. —Is this the place that you ?—No. I’ve never been there before.A. have visitedB. will visitC. are visiting18. —do you want for a party?—Let’s ask Peter for advice. He knows all the parks in this city.A. What; to buyB. Where; to goC. How; to start19. —Would you mind putting out the cigarette?—.A. Yes, I doB. No, it doesn’t matterC. Sorry, I’ll do it soon.20. The workers have decided to finish the task on time, it meansthey would have no weekends these two months.A. after allB. even thoughC. as if21. ―What would you like to drink? ―,please.A. RiceB. WaterC. Meat22. ―How many workers are there in your factory? ―There are about two .A. hundredsB. hundredC. hundreds of23. 一What are you do ing for this vacation? ―I'm my uncle.A. visitsB. visitedC. visiting24. I don't like eating chocolate. The taste is too .A. sweetB. deliciousC. crispy25. Linda didn't do her work as as you did.A. wellB. betterC. best '26. ―I'm going to spend my summer holiday in Hawaii.―A. Good luck!B. Good idea!C. Have a good time!27. ―When did you come back from Beijing? ― the morning of April 18th.A. AtB. InC. On28. ―You watched the fashion show last night, didn't you?―Yes,I missed the beginning.A. soB. andC. but29. ―Who the souvenir?―Maria did.A. buysB. boughtC. is going to buy.30. ―This is film I've told you about several times.―It's great. I've never seen a more moving one.A. theB. aC.不填31. Now telephones are very popular and they are much than before.A. cheapB. cheaperC. cheapest32. All the students have gone out. There is in the classroom.A. somebodyB. nobodyC. anybody33. The little boy asked his mother him alone.A. not to leaveB. not leaveC. do not leave34. ― . May I ask a question?―Yes. What is it?A. SorryB. Hold onC. Excuse me35. —Shall I tell Mike about it?―No, you . He's already been told.A. mustn'tB. can'tC. needn't36. The computers in the classroom next month.A. are going to useB. will be usedC. have used37. ―Does the child need any help?―No. He is old enough to himself.A. dressB. put onC. wear38. 一Will you please show me how to operate the new machine?一Sure. Now let me tell you to do first.A. whichB. howC. what39. We have been friends for nearly twenty years. Nothing can break off ourA. friendshipB. mindC. decision40. —Why don't you take the T-shirt, Linda? ―I have only $ 10. I can't it.A. borrowB. affordC. bring41. —what shall we have for supper?—I bought________ big fish at _______only market near my office.a; a B. a; the C. the; 不填42.the food I cook isn’t delicious, but _______ I can look after myself.at first B. at last C. at least43.—Excuse me. I want to buy some stamps. Where can I find a post office?—I know ________ not far from here. You can easily find _______.A. that, itB. it, oneC. one, it44.The lake is said to be dry. Is that true?It ___________. Look, some kids are swimming in it.A.must be trueB. can’t be trueC. may not be true45.What a nice picture of a house! It would be _____ with some green trees around it.A.goodB. betterC. worse46.I won’t be able to understand what you say, _______you speak too quickly.A. if B .though C. because47._________of the hats suited him, so Jack had to try on the third one.A. NeitherB. EitherC. Both48.—Frank, when will the short meeting begin?—You should come _______2:30 .If you come 10 minutes ________that time ,the meeting will be over.A. at; beforeB. at; afterC. after; before49. I had a hard time with math and I wasn’t ______to get the bad report from my math teacher.A. sureB. surprisedC. excited50. Medicine is dangerous for children, so it should be kept away _______them.A. byB. toC. from51. Although this village isn’t big, all the other villages I ________so far are smaller.A. visitedB. have visitedC. would visit52. No conclusion ________before we complete this test.A. is madeB. will be made C .has made53.—Where’s your brother now ,Bob?—I saw him _______in the street a moment ago and I told him_________.A. playing; don’t do soB. playing; not to soC. play; to do so54.—Have you got ________ready for the sports meeting?—Not yet. We still have ________to do.A. anything; nothingB. something; everythingC. everything; something55.—Could you tell me________?—Fill in this form and I will give you a card.A. how I can meet CathyB. where I can meet CathyC. when I can meet Cathy56. Have you found the answer to the question ______I asked you this morning?A. whenB. whatC. that57.—How long _________in Chengdu?—For just the weekend to come. I’ll be back next Monday morning.A. are you stayingB. did you stayC. have you stayed58. —What's that____ English, do you know?—Football.A. inB. onC. at59. —Why are you late?—The bus broke down on the road.—That's a bad____ you've told me twice.A. mistakeB. excuseC. forgive60. His homemade cookies look good but taste____.A. sweetB. wellC. terrible61. —The windows are broken and need to be repaired.—I think so. They can hardly____ the cold now.A. keep outB. give outC. put out62.. I will tell him the news____ he comes back.A. whileB. asC. as soon as63. The teacher told us that water____ at 0℃.A. is frozenB. frozenC. freezes64. —Who taught Mary French?—Nobody. She taught_____.A. herselfB. hersC. her65. —How do you like the book?—_____.A. Very kindB. Very interestingC. Very lucky66. The old man next door was found____ in the living room.A. deadB. dieC. death67. ____ well you can drive, you must drive carefully.A. So long asB. In order thatC. No matter how68. May I know if there is going to____ a concert tonight?A. haveB. beC. give69. —Oh, I have lost my CD!—_____. Let's call the Lost and found first.A. Don't shoutB. Don't worryC. Forget it70. —Did you have anyone fix your bike?—Yes, I had it____ just now.A. fixB. to be fixedC. fixed71. —Some more coffee?—No, thanks. I____ be off for my workA. canB. mayC. must72. —Mary, here's a dictionary. I hope it will help you.—Thanks a lot. It's____ what I need.A. justB. nearlyC. even73. —Bob, how are you feeling today?—Much____. I don't want to eat anything.A. betterB. worseC. healthier74. —____ do you live from your school?—It's ten minutes' walk.A. How longB. How farC. Where75. We have only one earth. So it is everyone's____ to protect it.A. jobB. ideaC. duty76. —Why didn't you open the door for me?—Sorry. I____ TV and didn't hear the door bell.A. was watchingB. am watchingC. watched77. —Let's go swimming after school!—____. Call me at any time.A. Wait a momentB. Sounds goodC. That depends78. —Is magazine yours, Joe?—No, I don't have magazine.A. a; aB. the; theC. the; a79. —Could you tell me ?—He's a bank clerk.A. who your father isB. what your father doesC. where your father works80. —Oil is everywhere in this store, so you know smoking is forbidden here.—I'm sorry.A. canB. mayC. must81. I'm sorry to have you waiting so long for Marcia,and I'm afraid it'll be ten minutes she comes back.A. beforeB. afterC. until82. The old man asked the girl to take another seat he wanted to sit next to his wife.A. becauseB. so thatC. so83. —I have to be off right now.—What a pity! I you could stay a little longer with us.A. thinkB. am thinkingC. thought84. The students in the higher grades I met in a football game are my good friends now.A. whenB. whichC. who85. —scientific attitude is needed in developing our city.— I agree with you. In this way, we can make mistakes.A. Fewer; lessB. Less; moreC. More; fewer86. —Would you like some juice or coffee?—. I really don't mind.A. EitherB. NeitherC. Both87. Because of the support from all over the country, beautiful new buildings here andthere in the earthquake hit areas in Sichuan.A. can seeB. can be seenC. will be seen88. —Where's my music disc? I can't see it!—You'd better the disc carefully in your bedroom.A. look upB. look throughC. look for89. —I like this set of sofa so much, but I don't know it in my small house.—You're supposed to put it in the living room.A. where to putB. why to putC. how to put90. Kate was so glad she received a Christmas gift from his grandparents away in Thailand.A. thatB. whenC. if91. There's wrong with the camera. Look! It works well.A. somethingB. nothingC. everything92. While we were running on the playground, Jack suddenly stopped and lay on the ground,so we all stopped what was wrong with him.A. to run; to seeB. running; seeingC. running; to see93. —The T-shirt looks nice on you! How much does it ?—I just ten dollars for it.A. take; affordedB. cost; paidC. cost; spent94. A student in my class said to me, " If I our math teacher, I make math learning easierand more interesting instead of giving the kids much homework to do every day. "A. were; wouldB. am; willC. was; could95. —What cold weather!—Yes. But it’s unusual experience for us, we normally live in a hot place.A. /; aB. a; anC. / ; anD. a; the96. —We can see the sign in the public places. What does it mean?—It means________.A. NO PHOTOSB. NO FISHINGC. NO PARKINGD. NO SMOKING97. —Do you enjoy My heart will go on?—No, I prefer songs loud.A. that isB. which isC. that areD. what are98. —I like drinking wine. But people who drink wine aren’t allowed to drive.—If I you, I would give up wine.A. were; drinkingB. am; drinkingC. were; drinkD. was ;to drink99. — Is there in today’s magazine?—Yes. Premier Wen Jiabao saw “stay home children”May,25th.A. anything special; hundreds of; onB. something special; hundred of; atC. special anything; hundreds; onD. anything special; hundreds of; in100.—That actor often joins in different activities in Beijing. Do you know ?—For 5 years.A. how soon he will come backB. how long he has stayed thereC. how long has he stayed there C. how often does he go thereKey: 历年中考真题选择题专练及答案(一)1.B2.D3.B4.C.5. B6.C7.B8.C9.A 10.C 11.B 12.C 13.C 14.B 15.A 16.C 17.A 18.B 19.C 20.B 21. B 22.B 23.C 24. A 25. A 26. C 27. C 28. C 29. B 30. A 31. B 32. B 33. A 34. C 35. C 36. B 37. A 38. C 39. A 40.B 41.B 42.C 43.C 44.B 45.B 46.A 47.A 48.B 49.B 50.C 51.B 52.B 53.B 54.C 55.A 56.C 57.A 58. A 59.B 60.C 61.A 62.C 63.C 64.A 65.B 66.A 67.C 68.B 69.B 70.C 71.C 72.A 73. B 74.B 75.C 76.A 77.B 78.C 79. B 80.C 81.A 82.A 83.C 84.C 85.C 86.A 87.B 88.C 89.A 90.B 91.B 92.C 93.B 94. A 95.C 96.D 97.C 98.A 99.A 100.B。
2023年冲刺(中考适用)英语考试集训题题型训练1. 单项选择15套(一)21. Facing the problem bravely is___________ first step to deal with it.A. aB. anC. theD./22.The astronauts gave another space lesson to millions of students___________ March,2022.A. onB. inC. atD. of23.You can see in the___________ eyes that they are thirsty for knowledge.A. kidB. kidsC. kid'sD. kids'24.Hangzhou___________ the 19th Asian Games in several months and I really look forward to it.A. heldB. was holdingC. have heldD. will hold25.You shouldn't give up easily. You need to believe in___________.A. youB. yourselfC. yourD. yours26.Jenny practices___________ the violin very hard these days. She is sure to give a wonderful performance!A. playB. playingC. to playD. played27. ___________ it is already April, the roads are still icy in parts of the country.A. ThoughB. IfC. UnlessD. Whenst year, two bridges___________ to connect Jiangbei and Shapingba.A. buildB. builtC. are builtD. were built29.Friendship is important to us. To me, nothing is___________ than it.A. valuableB. more valuableC. most valuableD. the most valuable30.-Excuse me, can you tell me___________?-Sure. Bus No. 8 will take you right there.A. when I can go to the Southwest HospitalB. when can I go to the Southwest HospitalC. how I can go to the Southwest HospitalD. how can I go to the Southwest Hospital(二)21.The music room is________ popular place in our school, and many students like to play________ piano there when they're free.A. the; aB. a;/C. a; theD. the; the22. ________ that cold morning, Jack read the book________ four sisters growing up.A. In; aboutB. On; aboutC. In; forD. On; for23.Mr.Wang teaches________ math, and________ of us likes him a lot.A. our; allB. us; eachC. our; eachD. us; every24.The question is so important that we must take it________.A. seriouslyB. hardlyC. importantlyD. patiently25.To our________, Tom, who had always been an honest boy, failed to keep his promise this time.A. surpriseB. surprisingC. surprisedD. surprises26.I________ Shanghai for 3 years since I________ here. Now I'm used to the food here.A. have gone to; movedB. have been in; movedC. have been in; movesD. have been to; had moved27.-It's so crowded here because of the poor traffic.-Don't worry. Things will be far better when the new road________ in 2 years.A. was builtB. is builtC. will be builtD. built28.-It's necessary to save food. We won't throw the food away________ it goes bad.-Certainly. There are still lots of people in great hunger across the world.A. ifB. thoughC. afterD. unless29.Bing Dwen Dwen has become the mascot(吉祥物)of the 2022 Winter Olympics which________ in China.A. got offB. took placeC. put onD. took part30.-As you can see, there are so many skirts in the store. Could you tell me________?-Maybe I prefer the red one with cute cartoons.A. which skirt do you want to chooseB. which the skirt you want to chooseC. which skirt you want to chooseD. which skirt you wanted to choose(三)21.Sophie,you have missed________ “I” in the word “finally”.A. aB. anC. theD./22.-I think Lily's ways of learning are much better than________.-I don't think so. Her ways may not be suitable for you.A. myselfB. meC. mineD. my23.The manned spaceship Shenzhou XIII returned to the earth safely________ April 16,2022.A. inB. onC. atD. since24.If you want to know the________ about the history of tea, you can search on the Internet.A. newsB. messagesC. noticesD. information25.When we read English poems, we can________ new words in a dictionary.A. look atB. look intoC. look throughD. look up26.-Wait for me, Mom. I need to find what to wear first.-But you must do it as________ as possible now. The concert will begin in 10 minutes.A. quickB. quickerC. quicklyD. more quickly27.According to the air traffic rules, you________ turn off your mobile phones before the plane takes off.A. mayB. canC. wouldD. must28. You are going to lose your job________ you try your best to do your part.A. ifB. unlessC. untilD. when29.The old book that I found on the shelf________ by my grandfather many years ago.A. was boughtB. is boughtC. buysD. bought30.-Sandy got a low score in this English test. She wondered________.-She should listen and read more at first.A. whether should she startB. what she could get from EnglishC. when she should learn EnglishD. how she could learn English well(四)21.Thomas graduated from Chongqing Foreign Language School in 2008 and now he works in________ university in Chongqing.A. anB. aC. theD./22.The little horse's grandpa lives on the other side of the river, so the little horse has to swim________ the river to see him.A. underB. inC. acrossD. on23.Tim's English is so poor that he really wants to________ his English as soon as possible.A. inviteB. inventC. increaseD. improve24.There's no primary school in the town. The twins have to teach________ at home.A. herselfB. themselvesC. ourselvesD. himself25.With the outbreak of COVID-19 in Hong Kong, more________ will be needed there.A. doctorsB. jobsC. managersD. visitors26.It's my________ time to visit the South Mountain. I still remember coming here with you in 2014.A. firstB. onceC. secondD. twice27.According to a study, almost two fifths of the food in our country________ last year.A. wastesB. was wastedC. is wastedD. wasted28.Lueas is one of the________ students in his class. So all of his teachers like him a lot.A. more hard-workingB. laziestC. lazierD. most hard-working29.These days, you can't go into any cinemas________ you have a Health Code.A. orB. becauseC. ifD. unless30.-Do you remember________ yesterday?-Yes. He asked us to read the passage on Page 19.A. what Mr. Zhang asked us to doB. what did Mr. Zhang ask us to doC. why Mr. Zhang asked him to leaveD. why did Mr. Zhang ask him to leave(五)21.Many__________ went to Shanghai to help the patients at the beginning of this month.A. woman doctorsB. women doctorC. woman doctorD. women doctors22.It takes__________ 20 minutes to go to school from my home.A.IB. meC. mineD. my23.- __________ has your mother been away on business?-For three weeks. She will return in three days.A. How muchB. How manyC. How oftenD. How long24.I like playing__________ volleyball, and Wang Ling likes playing__________ piano.A. a; theB. the;/C./;theD. the;/25.Now we have less homework, so we__________ our homework before 9:00 p.m. every day.A. have finishedB. finishC. finished D, finishes26.Don't__________ your dream, and you will succeed one day!A. give upB. give inC. give offD. give out27.The match is so__________ that we all feel__________.A. excite; excitingB. exciting; exciteC. exciting; excited D, excited; exciting28.-Peter,go to bed early, __________ you can't catch the early bus tomorrow morning.-OK,I will.A. andB. soC. butD. or29.We must remember that__________ is our main task.A. study hardB. studying hardC. hard studyD. hard studying30.-I don't know__________.-Her hometown is Chongqing, a beautiful city.A. where does Sally come fromB. when Sally comes from(六)21.Mom,I need_________ exercise book on that desk over there. Can you pass it to me?A. aB. anC. theD./22. Chongqing is a wonderful city which lies_________ the southwest of China.A. atB. inC. toD. on23.Boys and girls, remember_________ comes first while you're working hard. Spare some time to exercise tobuild a strong body.A. healthB. wealthC. powerD. time24.Hundreds of babies_________ in this town every year, so we need more baby-care centers.A. were bornB. will be bornC. have been bornD. are born25. _________ great progress you have made in the past three years! I feel proud of you all.A. HowB. WhatC. How aD. What a26.As we are running out of time, I suggest_________ a taxi to go there.A. takeB. tookC. to takeD. takinge on! There is always hope_________ you stop trying.A. ifB. whenC. unlessD. after28.It is reported that a new school_________ in our city in five years.A. was builtB. will be builtC. builtD. will build29.When you get older, you will understand the more effort you make, _________ you will be.A. luckyB. luckierC. the luckierD. the luckiest30.-There are only 20 days left. I wonder_________.-It is a question. I think following the teacher's steps is a good way.A. what should I do with my studyB. how should I deal with my studyC. what I can learn from the teachersD. how I can improve my English(七)21.-Is the movie good?-It's amazing! It has________ unexpected ending.A. aB. anC. theD./22.Leo's new mobile phone weighs much lighter than________. And it also costs less.A. myB. myselfC. mineD. me23.China introduced the“ double reduction” policy(双减政策) ________ July,2021.A. inB. onC. atD. since24.-The local government has already made________ in environmental protection.-What good news!A. changeB. decisionC. mistakeD. progress25.I________ the room. I hope you can keep it as clean as it is now.A. cleanB. have cleanedC. was cleanedD. will clean26.The dance The Journey of a Legendary Landscape Painting(《只此青绿》)has become one of________ shows in 2022 Spring Festival Gala(晚会).A. popularB. more popularC. the more popularD. the most popular27.-Chris,I'm afraid we can't complete the report this afternoon.-Well, we________ finish it today. It's fine if we hand it in tomorrow.A. needn'tB. mustn'tC. can'tD. shouldn't28.Our future is in our own hands, ________ we must spare no effort to fight for it.A. becauseB. soC. asD. or29.The photo that I found in the book________ by my grandfather a few years ago.A. is takenB. was takenC. takesD. took30.-Lisa's birthday is coming. I'm thinking about________. What's your idea?-A party sounds nice.A. what gift shall I get her-B. whether should we hold a partyC. when we'll have a big party-D. how I can give her a surprise(八)21.-Do you like to listen to__________ music?-Yes, especially popular music.A. aB. anC. theD./22.There's no salt left. Would you like to get__________ for dinner?A. itB. oneC. someD. any23.It's heart-breaking to hear about the air crash__________ March 21st.A. onB. inC. atD. for24. He always agrees with his friends about everything. In fact, he has no__________ of his own.A. thoughtsB. troubleC. friendsD. choice25.Children's Day is on the way. Many shops have__________ posters with the word“ SALE”.A. put awayB. put on C .put up D. put in26.The open-air celebration has been put off the weather is terrible__________ these days.A. thoughB. untilC. unlessD. because27.The Lifelong Journey is an excellent TV play. It's__________ than I expected.A. wonderfulB. more wonderfulC. boringD. more boring28.While I__________ an email, the computer suddenly went off.A. wroteB. am writingC. was writingD. will write29.-Listen! Is Sarah singing in the next door?-No, it__________ be her. She has gone to the library.A. can'tB. mustn'tC. mightD. must30.-Could you tell me__________? Mrs. Black is looking for him.-Maybe he is in the lab.A. where is JackB. where Jack isC. where was JackD. where Jack was(九)21.I played__________ guitar in the School Art Festival last week.A. aB. anC. theD./22.In order to save time, he decided to go to work__________ subway.A. withB. inC. onD. by23. When I have difficulty making choices, I always go to my parents for some__________.A. suggestionB. adviceC. informationD. idea24.Su Yiming__________ by many people when he got the first place in the Winter Olympic Games.A. has praisedB. is praisedC. was praisedD. was praising25.-Alice,what shall we do this weekend, going hiking or going fishing?-__________.We should stay at home and clean our house.A. NeitherB. EitherC. BothD. All26.These days, teachers often tell us not__________ in the rivers or lakes.A. swimB. to swimC. swimmingD. to swimming27.She had to stop running__________ she hurt her left knee in the sports meeting.A. becauseB. soC. butD. although28. Everyone can answer the math question. It's__________ one of all.A. the most difficultB. more difficultC. the easiestD. easier29. __________ fine weather it is today! Let's go mountain climbing!A. WhatB. HowC. What aD. How a30.-Excuse me, could you tell me__________?-Sure, go straight along this street for 50 meters, and then you can see it on your right.A. where the nearest supermarket wasB. where is the nearest supermarketC. how can I get to the nearest supermarketD. how I. can get to the nearest supermarket(十)21.-You can go to Nanshan Viewing Platform by________ taxi.-No, I will take a bus instead.A. aB./C. theD. an22. ________ the night of Oct. 16, 2021, Shenzhou XII carried three Chinese astronauts into space and they would live and work there for six months.A. AtB. InC. ToD. On23. The doctors and nurses are real________ during the fight against the COVID-19, because they have saved so many people.A. friendsB. volunteersC. heroesD. leaders24.Lu Xun________ for over eighty years, but his works still have a great influence today.A. diedB. was dyingC. has diedD. has been dead25.-Kids,did you carry all these boxes to the car________?-No, our uncle did it for us.A. yourselfB. yourselvesC. themselvesD. himself26. To protect sharks, these young people dress themselves in bloody shark suits to tell others________ shark fins.A.eatB. to eatC. don't eat D .not to eat27.Don't make a decision without thinking it over, ________ you may regret it later.A. andB. butC. orD. so28.Now Chinese couples________ to have three children to reduce the pressure of an aging population.A. encourageB. encouragedC. are encouragedD. were encouraged29.-What do you think of the latest film Nice View?-Hmm...I think it is________ film that I have ever seen.A. a goodB. a betterC. the bestD. a best30.-Do you know________?-Of course. At the National Stadium.A. when did the Beijing Winter Olympic Games closeB. where did the Beijing Winter Olympic Games closeC. when the Beijing Winter Olympic Games closedD. where the Beijing Winter Olympic Games closed(十一)21.-Look at the tall boy over there. He's___________ winner of the school knowledge competition.-Oh, he must be___________ clever boy.A. the; aB. the; anC. a; theD./;the22.A woman stood___________ the window, watching the children playing games in the garden.A. pastB. throughC. acrossD. by23.I have the___________ of reading before sleeping. It has been part of my life.A. courageB. chanceC. habitD. spirit24.I wonder when they___________ for Beijing. I will go to the train station to see them off when they___________.A. leave; will leaveB. will leave; leaveC. leave; leftD. left; leave25.We have friends to help us fight against pollution, and trees are one of___________.A. themselvesB. theyC. theirD. them26.I regret___________ you that you fail this time. But you can have another try next month.A. tellB. tellingC. toldD. to tell27.-Learning to love is like learning to walk.-Yes, ___________ we step out bravely, we'll find it's not so difficult.A. as much asB. as well asC. as long asD. as far as28.The Hong Kong-Zhuhai-Macao Bridge___________ in 2018.We are proud of it.A. is completedB. was completedC. completedD. complete29.The air in Chongqing is getting much___________ now than a few years ago.A. cleanB. cleanerC. cleanestD. the cleanest30.-Excuse me, could you please tell me___________?-Sure, it's about ten minutes' walk.A. how I could get to the zooB. how far it is from here to the zooC. where is the zooD. how long does it take to go to the zoo(十二)21. I think it's important to have__________ good breakfast every day.A. aB. anC. theD./22.-How far is it from Chongqing to Shanghai?-It's about three__________ ride by high-speed train.A. hourB. hour'sC. hoursD. hours'23. How time flies! Zhongkao is coming, and we__________ say goodbye to our teachers in 70 days.A. needB. mightC. canD. have to24.Hearing his mother walking to the room, the boy put down the phone and moved__________ back to the desk to read.A. politelyB. deeplyC. quietlyD. easily25. I think this pair of glasses is too expensive for me. I'd like a__________ pair.A. smallerB. biggerC. cheaperD. lower26.I will always face the challenge bravely__________ the result is.A. howeverB. whateverC. wheneverD. wherever27.In a soccer game, it's very important for the players to play together to__________ the best in each other.A. bring outB. break outC. come outD. blow out28.-Look! Someone__________ the classroom!-Yes! But who did it? I was the last one to leave here yesterday.A. is cleaningB. cleansC. has cleanedD. will clean29.-Would you like to try__________ tonight?-Well, how about watching the new movie Moon Fall?A. something funB. fun somethingC. anything funD. fun anything30.-Mary,could you please tell me__________?-I have no idea. She has been sad like this for a while.A. that Lucy failed the testB. what happened to LucyC. when does Lucy become sadD. why was Lucy unhappy(十三)21.Have you been to__________ Great Wall before? It is the largest man-made object in the world.A. aB. anC. theD./22.-What__________ can you give me on my future study?-Stick to it no matter what happens.A. adviceB. subjectC. newsD. purpose23.-Mike,will__________ your mom and dad attend tomorrow's parents' meeting?-They really care about my study and school life.A. bothB. allC. neitherD. none24.He found the homeless dog and took it home__________ a summer evening.A. inB. atC. forD. on25.There are many__________ along the street. You can go into any one you like.A. shoe storeB. shoe storesC. shoes storeD. shoes stores26.Mr. Wang isn't free now. He__________ the lesson in the office.A. preparesB. preparedC. is preparingD. will prepare27.You are__________ person I have ever known. Everybody wants to be friends with you.A. a niceB. a nicerC. nicestD. the nicest28.-Could I take my mobile phone to school, Mom?-No, you__________. It is against the school rules.A. mustn'tB. needn'tC. couldn'tD. wouldn't29.There are few buses in Los Angeles. __________ you have a car, it is hard for you to live there.A. AfterB. SinceC. UnlessD. If30.-Do you know__________?-Oh, he had a big fight with his father.A. how does Tom lookB. how Tom looksC. why does Tom look angryD. why Tom looks angry(十四)21.-Are you________ boy in this photo, Jim?-No, it's my twin brother Tom. He looks the same as me.A. aB. anC. theD./22.Li Ming goes to school________ his father's car every day.A. inB. onC. byD. for23.The death of Yuan Longping and Wu Mengchao in 2021 made us Chinese people in great________.A. dangerB. troubleC. sadnessD. excitement24.Mrs. Xu plans to teach her students how to protect________ at an earthquake this week.A. himselfB. herselfC. ourselvesD. themselves25.The cost of living in big cities is so________ these days. I can't afford it.A. expensiveB. cheapC. highD. low26.The number of pandas is increasing, ________ our country's great effort and right policies.A. according toB. instead ofC. thanks toD. such as27.-Why didn't Lynn come over to my house last night?-She________ for tomorrow's test at home. How hard she studies!A. preparesB. is preparingC. has preparedD. was preparing28. ________ we go out to have a picnic, we'd better check the weather report and take everything we need.A. ThoughB. UnlessC. BeforeD. Until29.Look at the sign. It means that you________ park your car here.A. wouldn'tB. needn'tC. won'tD. mustn't30.-Could you please tell me________?-Well, it will be held from September 10th to 25th this year, about half a month.A. how often the Asian Games are heldB. how long the 2022 Asian Games will lastC. where the 2022 Asian Games will be heldD. when the tickets for the Asian Games will be sold(十五)21.-Do you know the pop singer Delta, _________ Australian singer?-Is she from Australia? I thought she was_________ European.A. an; anB. an; aC. a; aD. a; an22.-David said Maria broke the glass and warned me_________ it.-It_________ be her. She is always careful about everything.A. don't touch; mustB. not to touch; mustn'tC. to not touch; can'tD. not to touch; can't23.-It's reported that many Beijingers went winter swimming in Houhai. _________ courage they showed in such cold weather!-It is good for our health. The more we exercise, _________ we will become.A. What a; the more healthyB. What; the more healthilyC. What; the healthierD. How; more healthily24.-I have read a large part of the book and the rest_________ more difficult.-We should learn to think while reading. Usually behind the lines_________ the writer's true meaning.A. is; lieB. are; layC. are; liesD. is; lies25.If you are interested in something, it's easier for you to pay_________ to it for a long time.A. attentionB. interestC. progressD. information26.Mr. Green was absent from today's meeting_________ his personal reason.A. afterB. inC. ofD. for27. _________ you do, you should work hard at it and try your best.A. HoweverB. WheneverC. WhateverD. Wherever28.Our School Art Festival_________ next week. We are looking forward to it.A. holdB. were heldC. will holdD. will be held29.As we know, most tables are made_________ wood, and paper is made_________ wood, too.A. of; fromB. from; ofC. of; byD. from; by30.Jack wondered_________ a meeting in five days.A. whether there will beB. whether there would beC. that there will beD. if would there be【参考答案】(一)参考答案解析:21.C【解析】考查冠词的用法.由关键信息“first”可知,序数词前需用定冠词,表示“解决问题的第一步”.故选C.22.B【解析】考查介词辨析.on通常用在具体的某一天前;in一般用在年、月份、季节等名词前;at一般用在时刻前;of通常表示所属关系.由“March”可知月份前需用介词in.故选B.23.D【解析】考查名词所有格.由“they”可知此处表示孩子们的,是复数概念,所以需在其后面直接加-即可.故选D.24.D【解析】考查动词的时态.由“in several months”可知几个月后,杭州将要举办第19届亚运会,是将要发生的动作,故用一般将来时.故选D.25.B【解析】考查代词辨析.you“你(们)”,主格或宾格;yourself“你自己”,反身代词;your“你(们)的”,形容词性物主代词;yours“你(们)的”,名词性物主代词.由语境“You need to believe in”可知此处表示“你需要相信你自己”,需用反身代词.故选B.26.B【解析】考查practice的用法.practice doing sth.意为“练习做某事”,是固定用法.故选B.27.A【解析】考查连词辨析.though“尽管”;if“如果”;unless“除非,如果不”;when“当······的时候”.由句意“尽管四月份了,该国部分地区的道路仍然结冰”可知前后分句存在让步关系.故选A.28.D【解析】考查时态及语态.由关键信息“Last year”可知需用一般过去时,再由two bridges和build 是逻辑上的被动关系可知用一般过去时的被动语态.故选D.29.B【解析】考查“否定词+比较级”.由句意“友谊对我们来说很重要.对我来说,没有什么比这更珍贵的了”可知此处表示最高级概念.“否定词+比较级”可以表示最高级,意为“最······不过”.故选B.30.C【解析】考查宾语从句.由语境“Bus No.8 will take you right there.”可知问句应是询问如何去西南医院,故排除A、B两项.再由宾语从句需用陈述语序可排除D项.故选C.(二)参考答案解析:21.C【解析】考查冠词的用法.第一空泛指一个受欢迎的地方,用不定冠词a; play与乐器名词连用时,乐器名词前要用定冠词the.故选C.22.B【解析】考查介词的用法.第一空所在句意为“在那个寒冷的早晨”,表示具体的某一个早上、下午、晚上,要用介词on;第二空后是Jack读的那本书的相关内容,应用介词about.故选B.23.B【解析】考查代词的用法.第一空作动词teach的宾语,要用宾格代词,由此可排除A、C项;each of us“我们每个人”是固定用法.故选B.24.A【解析】考查副词辨析.seriously“严重地;严肃地;认真地”;hardly“几乎不”;importantly“重要地”;patiently “耐心地”.由“The question is so important”可知,我们必须认真对待它.take...seriously是固定搭配,意为“认真对待·····”.故选A.25.A【解析】考查固定搭配.to one's surprise是固定搭配,意为“令某人惊讶/吃惊的是”.故选A.26.B【解析】考查动词的时态.since引导的时间状语从句中用延续性动词或者状态动词的过去式,主句用现在完成时或者现在完成进行时,由此可排除C、D项.此句意为自从我搬到这里,我在表示“在某地呆多长时间”用have been in.故选B.27.B【解析】考查动词的时态和语态.由“in 2 years”可知,时态是一般将来时,从句应用一般现在时表将来,且谓语动词build与主语the new road之间是动宾关系,要用被动语态.故选B.28.D【解析】考查从属连词辨析.if“如果”,引导条件状语从句;though“虽然;尽管”,引导让步状语从句;after “在······之后”,引导时间状语从句;unless“除非;如果不”,引导条件状语从句.由“It's necessary to save food."和答语可知,此处表示“除非食物变质,否则我们不会把它扔掉”.故选D.29.B【解析】考查动词短语辨析.get off“下车(船、飞机等)”;take place“发生;举行”;put on“穿上;上演;(体重)增加”;take part“参与,参加”.“which in China”是先行词the 2022 Winter Olympics的定语从句,表示2022年冬季奥运会是在中国举办的.故选B.30.C【解析】考查宾语从句.宾语从句要用陈述语序,由此可排除A项;上下句的时态均为一般现在时,此句也应是一般现在时,由此可排除D项;B项多了一个定冠词the.故选C.(三)参考答案解析:21.B【解析】考查冠词的用法.该句句意为“Sophie,你把单词“finally'中的一个字母I漏了”.应该用不定冠词.“I”的发音为元音音素,需用“an”.故选B.22.C【解析】考查代词辨析.myself“我自己”,为反身代词;me“我”,为人称代词的宾格;mine“我的”,为名词性物主代词;my“我的”,为形容词性物主代词.空格处的句意为“我认为Lily的学习方法比我的好很多”.空格后没有名词,因而空格处应填入名词性物主代词.故选C.23.B【解析】考查介词辨析.句意为“神舟十三号载人飞船于2022年4月16日安全返回地球”.April 16,2022为具体的某一天,应用时间介词on.故选B.24.D【解析】考查名词辨析.news“新闻”;message“口信,消息”;notice“通知”;information“信息”.空格后为about the history of tea,意思是“关于茶叶的历史”.由常识可知,information符合语境.故选D.25.D【解析】考查动词短语辨析.look at“看”;look into“调查”;look through“浏览”;look up“查阅”.句意为“当我们读英文诗歌时,我们可以在字典上新单词”.look up符合语境.故选D.26.C【解析】考查副词原级的用法.as+副词/形容词+as...表示“像······一样·····.”,副词或者形容词用原级,不需要用比较级.空格处修饰空格前的动词“do”,应用副词quickly.故选C.27.D【解析】考查情态动词的用法.由语境可知,在飞机起飞之前关掉手机是规章制度.规章制度有强制性,是大家必须要遵守的.情态动词应用must,表示“必须”.故选D.28.B【解析】考查状语从句的引导词.if“如果”;unless“除非”;until“直到”;when“当······时候”.引导词的选择取决于主句和从句之间的逻辑关系.主句意思为“你会丢掉你的工作”;从句意思为“你尽力履行职责”.unless“除非”符合语境.故选B.29.A【解析】考查动词的时态和语态.句意为“我在书架上找到的那本旧书是许多年前我爷爷买的”.由“many years ago”可知,时态应用一般过去时;“buy”和“the old book”之间为动宾关系,结合“by my grandfather”可知,应用被动语态.故选A.30.D【解析】考查宾语从句.由语境可知,Sandy英语考试得分很低.结合答句“She should listen and read more at first.”可知,空处用宾语从句提问方式.D选项“她如何能学好英语”符合语境.故选D.(四)参考答案解析:21.B【解析】考查冠词的用法.此处泛指重庆的一所大学,用不定冠词,university是以辅音音素开头的单词,应用a.故选B.22.C【解析】考查介词的用法.under“在······下面”;in“在······里面”;across“穿过;渡过”;on“在······上面”.由“The。
高考英语〔单项选择〕冲刺训练〔7〕及答案解析第一局部:英语知识运用(共两节,总分值45分)第一节:单项填空(共15小题;每题1分,总分值15分)从每题所给的A、B、C、D四个选项中,选出可以填入空白处的最正确选项。
1. Exploring ________space is exciting, yet dangerous. There is ________need for both robots and humans for space exploration.A. the; aB. a; aC. /; aD. /; the2. Scientific research results can now be quickly ________ to factory production.A.used B.appliedC.tried D.practiced3. Computer has become a(n) ________ part of my life, without which I can hardly deal with my job.A.special B.specificC.essential D.especial4. I ________ on a sofa because my grandparents have been here for the weekend.A. sleptB. was sleepingC. have sleptD. am sleeping5. I'm interested in a onebed room. Do you have any ________?A.convenient B.availableC.possible D.personal6. The further falling of the stock market as reported today has ________ a fresh wave of selling.A.given off B.set offC.put off D.got off7. The incomes of skilled workers went up. ________, unskilled workers saw their earnings fall.A. MoreoverB. ThereforeC. MeanwhileD. Otherwise8. You may imagine what great difficulty I had________complicated ideas in simple English.A.expressing B.to expressC.expressed D.express9. Thanks to Mr. Smith the father and the son eventually________after ten years' cold relationship between them.A.took up B.made upC.looked up D.turned up10.He ________ whether the articles exhibited at the back of the department store were for sale.A.demanded B. decidedC.required D.requested11.—Shirley, can I have a look at your photos?—________.Here you are.A.By any means B.By no meansC.By this means D.By all means12. I hadn't seen him for 10 years but I ________ him at first sight.A. realizedB. spottedC. watchedD. observed13. ________while writing, he locked himself in his study.A.Not to interrupt B.Not being interruptedC.Not to be interrupted D.Being not interrupted14. If we keep wasting so much energy, ________are that our oil wells will dry up and the environment will be destroyed.A. problemsB. difficultiesC. questionsD. chances15. —Andrew won't like it, you know.—________? I don't care what Andrew thinks!A. So whatB. So whereC. So whyD. So which1.C 该题考查冠词的用法。
选择题冲刺训练1.2015年1月,农业部发布《关于做好2015年农业农村经济工作的意见》,意见指出,坚持以稳粮增收调结构,提质增效转方式为主线,深化农村改革,加强法制保障,推进科技创新,发展现代农业,千万百计使农民收入持续较快增长,使农民收入增幅保持在7.5%以上。
下列措施中有利于从再分配层面促进农民增收的是:①建立健全农民工最低工资保障制度②提高农民土地增值收益分配比例③提高新型农村合作医疗财政补助标准④继续增加农业补贴资金规模A.①②B.②④C.③④D.①③2.近几年的《政府工作报告》都一再强调,政府工作要重民生,要坚持把保障和改善民生作为经济工作的出发点和落脚点。
下面是给政府关注民生拟定的主题词,你认为全部正确的是:①民主科学决策,加强行政干预,深化机构改革,巩固执政地位②正确履行职能,遵循基本原则,坚持依法行政,自觉接受监督③加强管理服务,坚持公正司法,权力接受监督,树立政府威信④深化改革,以为人民服务为宗旨,打造便民利民政府,转变政府职能A.①②B.②③C.①④D.②④3.时间都去哪儿了,能否找到它带着现在的记忆回到过去,懂点事,听些话,让爸妈的笑容漫上脸颊,时间,或许就在心里,就是一个渐渐懂得什么是辛苦,什么是责任,什么才叫一个家……时间哪里都没去,就在原地等待着,等待着看一幕幕花开的芬芳,等待着懂得的人,去做让它都感到幸福的事情,这启示我们:①明白时间静止的意义能让我们感知亲情的幸福和芬芳②时间处在绝对运动中,一切皆变,只能在回味中流泪③时间的长短有无完全由我们自己随意控制④对传统文化符合社会发展要求的,积极向上的内容,应该保持和发扬A.①③B.①④C.②③D.②④4.人为型空气污染是雾霾天气重要成因,因此需要抓住关键和薄弱环节采取综合治理手段,实现多项污染物协同减排,市民也要树立环保观念,倡导每人少开一天车,大家共同努力,共建绿色家园。
以上材料体现的唯物辩证法的道理有:①运用系统优化的方法各方面协同减排②树立正确的价值观,共创绿色家园③量变是质变的必要准备,保护环境要从点滴做起④主要矛盾决定事物的性质,抓住环境污染治理的关键环节A.①③B.②③C.①④D.③④5.经各方共同努力,D市被授予“国家卫生城市”称号。
要继续营造蓝天碧水、创造良好生态环境,企业应该:①加大环保投入,完善环境污染监督机制②保护和改善环境,承担应有的社会责任③树立正确消费观念,践行低碳生活方式④转变自身发展方式,走绿色发展道路A.①②B.②④C.①④D.②③6.在内蒙草原,牧民为了防止小鸟吃掉草籽,用网把草地盖住,结果小鸟不能吃掉草籽,也不能吃到吃草的小虫,而虫把草都吃掉了,人们只能另谋捷径收获草籽。
这表明:①矛盾双方既对立又统一,由此推动事物的变化和发展②联系具有多样性,要把握事物存在和发展的各种条件③自在事物的联系是实践的产物,,不以人的意志为转移④人们只有尊重和服从规律,才能正确利用和发展规律A.①②B.②④C.②③D.③④7.近年来,越来越多的浙江农民发现,脚下的土地不仅能生产农产品,还能生产田园风光,生产农事文化,生产农家情趣。
“种这种那,不如综合开发”,观念一更新,农民们在原有土地上创造出了更多的财富。
这从一个侧面表明:①社会意识对社会发展起积极的推动作用②辩证的否定是事物的自我完善与发展③生产关系的变革促进生产力的发展④要掌握系统优化的方法A.①②B.①③C.②④D.③④8.“履不必同,期于适足;治不必同,期于利民。
”这一思想给我们的哲学启示是:①注重量的积累,防微杜渐②认识随着实践的变化而变化③坚持共性和个性的具体的历史的统一④坚持群众观点和群众路线,以人为本A.①③B.③④C.②③D.①④9.2014年,一些蔬菜、水果再次遭遇虽大获丰收但却因卖不出去而烂在地里的局面。
下列选项最能体现市场调节这一弊端的是:A.价格涨跌→闻价而行→不择手段、两极分化B.利益驱动→调整生产→事后调节、经济波动C.有利可图→追逐利益→欺行霸市、分配不公D.信息不灵→一哄而上→供求失衡、资源浪费10.在日常经济生活中,常常会使用一些非现金支付结算工具。
以下做法合理的是:A.银行发放信用卡→个人提供资信证明→持卡人在发卡行指定场所消费B.网上注册支付宝→支付宝将款项支付给商家→商家将货物付与消费者C.在银行开立支票存款账户→存户在存款范围内签发支票→银行付款给持票人D.开立外汇账户→将外币兑换成人民币存入账户→到国外使用外汇账户消费11.股票发行注册制改革是指发行人申请发行股票时,证券监管机构只对申报文件的全面性、准确性作形式审查,不对发行人的资质进行实质性审核和价值判断,而将发行公司股票的良莠留给市场来决定。
此举将有利于:①改善融资环境,激发市场活力②降低股市风险,刺激资金流入③完善资本市场,促进分配公平④促进资金融通,提高配置效率A.①②B.②③C.①④D.③④12.十二届全国人大三次会议通过了《关于修改〈立法法〉的决定》。
修改后的《立法法》明确了“税种的设立、税率的确定和税收征收管理等税收基本制度”只能由法律规定。
这表明:①税收具有固定性的特征②税收是财政收入的基本形式③全国人大有最高决定权④依法治国方略得到有效贯彻A.①②B.③④C.①④D.②③为进一步推动我国养老“并轨”,国务院办公厅发布通知,机关事业单位自2014年10月1日起开始实施职业年金制度。
回答8~9题。
13.职业年金是为机关事业单位工作人员建立的补充养老保险制度。
实施这一制度有利于A.落实分配政策,消除收入差距B.减轻企业负担,提高经济效益C.激发生产兴趣,提高劳动收入D.完善社会保障,促进社会公平14.“真正的智慧不在于洞察眼前的一切,而在于预见即将发生的事。
”这句话强调的是:A.意识具有主动创造性 B .意识具有自觉选择性C.意识能够指导实践活动D.意识是对事物发展趋势的反映15.2015年校园足球工作计划提出了一系列促进足球人才培养的做法。
下列做法与其体现的哲理一致的是:A.促进校园足球的国际交流——联系构成事物的变化和发展B.加强校园足球的宣传活动——意识对物质具有促进作用C.将足球作为体育课必修内容——运动和静止是辩证统一的D.建立全国校园足球竞赛体系——整体功能大于部分功能之和17.2014年中央对地方民族地区转移支付规模达到520亿元,比2013年增长12.1%。
国家支持民族地区加快发展:①为巩固社会主义新型民族关系奠定坚实的政治基础②坚持了社会主义本质,有利于实现各民族共同发展③有利于全面建成小康社会和实现中华民族伟大复兴④能够实现民族自治地方与东部发达地区间优势互补A.①②B.①④C.③④D.②③18.力促社会和谐的进程中,人民政协发挥着重要的作用,具有党政机关和权力机关不可替代的优势。
人民政协的优势在于:①代表性强,能够反映群众各方面的意见②联系面广,是各民主的党派的政治联盟③人才荟萃,能为经济社会发展提供智力支持④监督有利,行使质询权,推进政府的依法行政A.①③B.①②C.②④D.③④19.人生需要信仰驱动,社会需要共识引领,发展需要价值导航。
党的十八大提出要积极培育社会主义核心价值观,积极培育和践行社会主义核心价值观,有利于:①凝心聚力,为全面建成小康社会提供强大的智力支持②引领思潮,培育崇德向善的社会风尚和公民品格③强基固本,提升我国文化向心力和民族凝聚力④弘扬主旋律,抵御外来文化对中国文化的渗透和影响A.①③B.②③C.①④D.②④20.根据(下图)数据变化趋势可口推断出,近几年来北京市:①城乡居民恩格尔系数逐年提高②农村居民收入高于城镇居民③不断加大惠农政策的支持力度④市民对服务业需求不断上升A.①②B.①④C.②④D.③④21.正在建设中的北京地铁16号线,采用“特许经营+股权融资”的模式吸引社会投资270亿元,成为目前北京轨道交通线路吸引社会投资规模最大的项目,基本实现政府当期“零投入“。
这一模式:①拓宽了民间资本的投资领城②体现我国基本经济制度的重要实现形式③说明财政能够稳定经济发展④说明北京市民生财政支出将大幅度减少A.①②B.①③C.②④D.③④的力量;北京榜样,就在我们身旁。
”“北京榜样”是一项融广泛发动、推荐选树、宣传报道、公益实践为一体的群众性综合大型主题活动。
该活动自启动以来,在全市宣传树立了一批“奋发向上,崇德向善”的“北京榜样”。
“北京榜样”活动:①弘扬传统道德,凸显道德修养对个人发展的重要影响②加强公民教育,明确自省是促使道德提升的唯一方式③传播文明理念,是社会主义精神文明建设的重要内容④汇集榜样人物,是培育社会主义核心价值观的生动实践A.①②B.①③C.②④D.③④22.越来越多的研究表明,马铃薯只要不油炸,完全是一种健康食品:淀粉含量低,富含蛋白质和维生素,以及钾、镁等微量元素,不但是一种碱性食品,有利于维持人体内的酸碱平衡,而且进食后很容易产生“饱腹感”,有减肥瘦身的功效。
这一结论表明:①思维和存在具有同一性②意识是对客观存在的主观映象③人能够能动地改造世界④规律是不以人的意志为转移的A.①②B.①③C.②④D.③④23.“墨菲定律”是一种心理学效应,它的根本内容是指任何一个事件,只要具有大于零的机率,就不能够假设它不会发生。
这启示我们:A.坚持从局部入手认识整体B.在事物的共性中把握个性C.用对立统一的观点看问题D.分析解决问题要突出重点24.微信用只需在微信中关联一张银行卡,并完成身份认证,即可将装有微信APP的智能手机变成一个全能钱包,无需任何刷卡步骤即可完成支付,购买合作商户的商品及服务,整个过程简便流畅。
与传统的线下支付相比,微信支付改变了:A.货币的本质B.商品的基本属性C.消费的方式D.市场的供求关系25.“创客”是指出于兴趣和爱好,努力把各种创意转变为现实的人。
创客充分展示了大众创业、万众创新的活力。
这种活力和创造,将会成为中国经济未来增长的不熄引擎。
推动创客发展,政府应该:①完善经济制度,强化政策扶持②提升创业素质,树立创业理念③提高工资标准,保障创客权益④放宽市场准入,改善创业环境A.①②B.①④C.②③D.③④26.《记住乡愁》开篇之作《培田村——敬畏之心不可无》呈现了连城培田深厚的客家文化传统,片中展示的对天地、祖先、圣贤的敬畏之心和浓浓的乡愁,引发了海内外华人观众强烈的共鸣。
这种共鸣:A.显示了中华文化具有极大的包容性B.是推动中华文化发展的动力C.是对中华文化认同感与归属感的反映D.彰显了中华文化强大生命力27.2015春晚采用3D全息投影技术,使歌曲《锦绣》在动静对比中,实现传统与时尚、手艺与演艺的混搭,带给人们极大的精神享受。
这体现了:①科学技术是推动文化创新的重要因素②创新是文化富有生机和活力的重要保证③大众传媒是实现文化创新的根本途径④中华文化呈现着多民族文化的丰富色彩A.①②B.①③C.②③D.③④28.“德若水之源,才若水之波;德若木之根,才若木之枝”。