高一周测试卷
- 格式:docx
- 大小:24.27 KB
- 文档页数:5
高一生物周测试卷(必修2)第Ⅰ卷一、选择题(共23个小题,每题2分)1.下列各组中不属于相对性状的是()A.水稻早熟和晚熟 B.豌豆的紫花和红花C.小麦的抗病和易感染疾病 D.绵羊的长毛和细毛2.下列属于等位基因的是()A. A与bB. Y与yC. E与ED. f与f3.一只白色公羊和一只白色母羊生下一只黑色公羊。
假如再生一只小羊,该羊是黑色的概率为()A、1/8B、1/6C、1/4D、1/24.母马的体细胞有染色体64条,公驴的体细胞有染色体62条。
母马与公驴杂交的后代骡的体细胞染色体数为()A、61B、62C、63D、645.桃果实表面光滑对有毛为显性,在毛桃的植株上授以纯合光桃的花粉,该雌蕊发育成的果实应为()A、毛桃B、光桃C、1/3概率为毛桃D、1/3概率为光桃6.下列叙述正确的是()A、纯合子测交后代都是纯合子B、纯合子自交后代都是纯合子C、杂合子自交后代都是杂合子D、杂合子测交后代都是杂合子7.下列各项应采取的分配实验方法分别是()①鉴别一只白兔是否是纯合体②鉴别一对相对性状的显性和隐性③不断提高小麦抗病的品种的纯度A.杂交、测交、自交 B.测交、杂交、自交C.杂交、自交、测交 D.自交、测交、杂交8.下图是某白化病家族的遗传系谱,请推测Ⅱ—2与Ⅱ—3这对夫妇生白化病孩子的几率是()A.1/9 B.1/4 C.1/36 D.1/189.基因型为AABBCC与aaBBcc的小麦进行杂交,这三对等位基因分别位于非同源染色体上,F1杂种形成的配子种类数和F2的基因型种类数分别是()A、4和9B、4和27C、8和27D、32和8110.具独立遗传的两对基因的两个杂合体杂交,子代只有一种表现型,那么这两个亲本的基因型为()A.aaBb×AABb B.AaBB×AABbC.AaBb×AABb D.AaBB×aaBb11.右图为某高等哺乳动物的一个细胞示意图,该细胞属于()A.卵原细胞 B.初级卵母细胞C.第一极体 D.卵细胞12.人的精子中有23条染色体,则人的神经细胞、初级精母细胞、卵细胞中分别有染色体多少条()A、46、23、23B、46、46、23C、0、46、0D、0、46、2313.某种哺乳动物的直毛(B)对卷毛(b)为显性,黑色(C)对白色(c)为显性(这两对基因分别位于不同对的同源染色体上)。
新丰一中高一数学周测试卷考试时间:100分钟 满分:100分 命题人:杨胜成 审题人:潘自知第Ⅰ卷(选择题,共40分)一、选择题(本大题共10小题,每小题4分,共40分)1.若全集{}{}0,1,2,32U U C A ==且,则集合A 的真子集共有( ) A .3个 B .5个 C .7个 D .8个 2.函数34)(2+-=x x x f 在[-1,4]上的最大值和最小值是( ) A.3和-1 B.8和3 C.8和-1 D.9和-1 3.若f (x )=xx 1-,则方程f (4x )=x 的根是 A. 12B.-12C.2D.-24.函数y = )A .[1,)+∞B .2(,)3+∞C .2[,1]3D .2(,1]35.设0x 是方程ln 4x x +=的解,则0x 属于区间 ( )A . (0,1)B . (1,2)C . (2,3)D .(3,4) 6.下列说法正确的是A.平面α和平面β只有一个公共点B.两两相交的三条直线共面C.不共面的四点中,任何三点不共线D.有三个公共点的两平面必重合 7.已知直线l α⊥平面,直线m β⊆平面,则下列四个命题:①//l m αβ⇒⊥;②//l m αβ⊥⇒;③//l m αβ⇒⊥;④//l m αβ⊥⇒,其中正确的是( )。
A .①② B .③④ C .②④ D .①③8.下列四个几何体中,每个几何体的三视图有且仅有两个视图相同的是( )A .①② B.②③ C.②④ D.①③ 9.设,m n 是两条不同的直线,,αβ是两个不同的平面,下列命题正确的是( )A .若,,//m n m n αβ⊥⊥,则//αβB .若//,//,//,m n αβαβ则//m nC .若,//,//m n αβαβ⊥,则m n ⊥D .若//,//,//,m n m n αβ则//αβ10.a ,b 是两条异面直线,下列结论正确的是A.过不在a ,b 上的任一点,可作一个平面与a ,b 平行B.过不在a ,b 上的任一点,可作一条直线与a ,b 相交C.过不在a ,b 上的任一点,可作一条直线与a ,b 都平行D.过a 可以并且只可以作一平面与b 平行①正方体 ②圆锥 ③三棱台 ④正四棱第Ⅱ卷(非选择题,共60分)二、填空题(本大题共4小题,每小题4分,共16分)11.设函数2211()1⎧-⎪=⎨>⎪⎩x x f x x x ,,-2,,≤则1(2)f f ⎛⎫ ⎪⎝⎭的值为________.12.若不等式3axx22->(13)x +1对一切实数x 恒成立,则实数a 的取值范围为______. 13.设函数12)(+=x x f ,若函数()y g x =为奇函数,且在x>0时g(x)=()f x ,求函数()y g x =的解析式 .14.α、β、γ是三个平面,a 、b 是两直线,有下列三个条件①α∥γ,b ⊂β ②a ∥γ,b ∥β ③b ∥β,a ⊂γ命题“α∩β=a ,b ⊂γ,且 ,则a ∥b ”是真命题,则所有可以在横线处填入的条件的序号是 .三、解答题:本大题共6小题,共80分.解答须写出文字说明、证明过程或演算步骤. 15.计算下列各式的值,写出计算过程(每小题各4分,共8分) (1)322 21 32 )278()21(1627-----+ (2)2log 552325525.0log 10log 24log 3log +++⋅16.(本小题满分9分)已知函数()f x 是二次函数,有(0)1f =,(1)0f =,且对任意的实数x 都有(1)(1)f x f x +=-恒成立.(1)求函数()f x 的解析式;(2)利用单调性的定义证明函数()f x 在区间[1,)+∞上是增函数;(3)求函数()f x 在[1,5]上最大值和最小值,并指出取得最大(小)值时相应的x 的值. 17.(本题8分)如图,几何体中,△ABC 为正三角形,AE 和CD 垂直于平面ABC ,且AE =AB =2a ,CD =a ,F 为BE 的中点.求证: (1)DF ∥面ABC ; (2)AF ⊥B D.18. (本题8分)某公司以每吨10万元的价格销售某种化工产品,每年可售出该产品1000吨,若将该产品每吨的价格上涨x%,则每年的销售数量将减少mx%,其中m 为正常数. (1)设销售总金额为y ,求y 关于x 的函数解析式.(2)当21=m 时,该产品每吨的价格上涨百分之几,可使销售的总金额最大?19.(本题11分)四棱椎P —ABCD 中,底面ABCD 是矩形,PCD ∆为正三角形,平面,ABCD PCD 平面⊥PB PD E AC 为,⊥中点. (1)求证:PB ∥ 平面AEC ; (2)求二面角E —AC —D 的大小.新丰一中高一数学周测试卷答案二、填空题11.43 12. -12 <a <32 13. g(x)=⎪⎩⎪⎨⎧<+-≥-01)21(012x x x x ; 14. ①③三、解答题 15.解(1)3494419)32(223)32()2()2(3)278()21(1627222232321214323322 21 32=--+=--+=⎥⎦⎤⎢⎣⎡--+=--+---------)((2)8224225log 42)25.010(log 4225.0log 10log 4log 525.0log 10log 24log 3log 525525222log 552325=++=++=+⨯+=+++=+++⋅16.(本小题满分14分)解:(1)由题可设2()f x ax bx c =++(0a ≠)∵(0)1f =,(1)0f =,(1)(1)f x f x +=-∴2210(1)(1)(1)(1)c a b c a x b x c a x b x c⎧=⎪++=⎨⎪++++=-+-+⎩解得121a b c =⎧⎪=-⎨⎪=⎩∴()f x 的解析式为2()21f x x x =-+(2)任取12,[1,)x x ∈+∞,且12x x <,则22212211()()(21)(21)f x f x x x x x -=-+--+ 2112()(2)x x x x =-+-∵12,[1,)x x ∈+∞,且12x x <,∴122x x +>∴210x x ->,1220x x +-> ∴21()()0f x f x ->,即12()()f x f x < 所以函数()f x 在区间[1,)+∞上是增函数 (3)由(2)可知()f x 在[1,5]上是增函数,∴当1x =时,min ()(1)0f x f == 当5x =时,max ()(5)16f x f ==所以函数()f x 在[1,5]上的最大值为16,相应的x 的值为5;函数()f x 在[1,5]上的最小值为0,相应的x 的值为1.19.证明 :(1)取AB 中点G ,连结CG 、FG . ∵F 为EB 中点,∴四边形FGCD 为平行四边形∴DF ∥CG ,又CG ⊂面ABC ⇒DF ∥面ABC (2)∵△ABC 为正三角形,G 为AB 中点.18. 解:(1)由题设,当价格上涨x%时,销售总金额为: (2)%)1(%)1(100010mx x y -⨯+⨯⨯=(万元)即1000)1(1002+-+-=x m mx y 。
2022—2023学年度第二学期高一历史周测试卷(六)姓名:_________ 班级:________ 得分:_______时间:40分钟分值:100分一、选择题(每小题3分,共48分。
)1.伊比利亚半岛殖民者犯了一些严重的错误,比如严格限制贸易往来、禁止殖民地与欧洲列强贸易、依赖缺乏效率的官僚体系等。
而一百年后开始拓殖北美的英国人,采用的则是以法治为基础的精简、分权、宽容的制度。
双方这种殖民方式的差异,主要源自于()A.南北美洲的自然人文差别B.当地原住民的反抗激烈程度C.殖民者的自身现代性差异D.英国成功吸取前述殖民教训2.1602年,在秘鲁,蒙特雷总督向西班牙国王描述了总督区首府的奢华:“所有人都穿着丝绸,而且质量最好,价格最高。
”在利马,可以找到40家来自欧洲或亚洲的奢侈品商店,有些店主拥有超过100万比索的资本。
拉美地区这一状况的出现主要缘于()A.三角贸易的持续开展B.丝绸之路的畅通C.西方的早期殖民扩张D.机器工业的兴起3.1884年11月15日,英、法、德等欧洲15国签署协议,宣称其宗旨是“为了本着相互友好协商的精神确定发展非洲某地区的贸易和文明的最惠国条件……希望避免在占据新的非洲沿海领土时可能发生的不和与纠纷;关切开发土著居民精神和物质财富的方法。
”该协议的签署()A.解决了欧洲列强争夺非洲的矛盾B.平衡了欧洲列强间的利益C.加快了欧洲列强瓜分非洲的速度D.使非洲所有国家丧失独立4.1885年2月,美国、比利时等15个国家经过会谈达成了协定,协定中的共识包括:占领非洲沿海新地区的国家必须通知其他国家,同时保证其他国家的现有各项权利不受损害。
这次会议()A.促进了非洲地区的发展B.消除了西方国家的矛盾C.加速了殖民体系的形成D.捍卫了自由贸易的原则5.詹姆斯给西奥多·罗斯福总统的信中说:“这个国家(中国)太过神奇和伟大,他的觉醒将是我们所有人的噩梦。
我们唯一的方式,是用我们的思想完全替代他们原有的文明,让他们未来的精英和领袖,认为我们才是伟大和先进的”。
2024-2025学年统编版(2019)高一化学下册阶段测试试卷327考试试卷考试范围:全部知识点;考试时间:120分钟学校:______ 姓名:______ 班级:______ 考号:______总分栏一、选择题(共7题,共14分)1、下列物质在所述变化中,既发生离子键破坏,又发生共价键破坏的是()A. 干冰升华B. 烧碱融化C. HCl气体溶于水D. NH4Cl受热分解2、胶体分散系与其他分散系的本质区别是()A. 分散质粒子的直径大小B. 是否有丁达尔现象C. 是否稳定D. 是否透明3、科学家指出:多种海产品如虾、蟹、牡蛎等,体内含有[rm{+5}<]价的砷[rm{(As)}<]元素,它对人体是无毒的,吃饭时不要同时大量食用海鲜和青菜,否则容易中毒,并给出了一个公式:“大量海鲜[rm{+}<]大量维生素[rm{C═}<]砒霜[rm{(As_{2}O_{3})}<]”[rm{.}<]下面有关解释正确的应该是[rm{(}<][rm{)}<]A. 维生素[rm{C}<]具有还原性B. 维生素[rm{C}<]具有氧化性C. 该反应中[rm{+5}<]价砷被氧化D. 砒霜中毒后可服用维生素[rm{C}<]解毒4、下列说法正确的是( )A. 向稀的[rm{Na_{2}CO_{3}}<]和[rm{NaHCO_{3}}<]溶液中加入[rm{CaCl_{2}}<]溶液均有白色沉淀产生B. 向[rm{AlCl_{3}}<]溶液中逐滴滴入[rm{NaOH}<]溶液与向[rm{NaOH}<]溶液中逐滴滴入[rm{AlCl_{3}}<]溶液,现象相同C. [rm{2}<] [rm{g}<] [rm{H_{2}}<]充分燃烧后产物被[rm{Na_{2}O_{2}}<]完全吸收,[rm{Na_{2}O_{2}}<]固体增重[rm{2g}<]D. 向 [rm{NaAlO_{2}}<]溶液中通入过量 [rm{CO_{2,}}<]制备不出[rm{Al(OH)_{3}}<]沉淀5、下列试剂能用来鉴别[rm{SO_{2}}<]和[rm{CO_{2}}<]的是[rm{(}<][rm{)}<]A. [rm{NaOH}<]溶液B. 酸性高锰酸钾溶液C. 饱和碳酸氢钠D. 澄清石灰水6、把[rm{500mL BaCl_{2}}<]和[rm{KCl}<]的混合溶液分成[rm{5}<]等份,取一份加入含[rm{a mol}<]硫酸钠的溶液,恰好使钡离子完全沉淀;另取一份加入含[rm{b mol}<]硝酸银的溶液,恰好使氯离子完全沉淀。
高一下数学周测试卷一、选择题(共8题,每题5分,8题少选得2分,选错不得分;共40分)1.已知正方体的表面积为54,则正方体的体积为( )A. 18B. 27C. 36D. 452.已知两条不同的直线m ,n 和两个不同的平面α,β,且m ⊂α,n ⊂α,则“m∥β且n∥β”是“α∥β”的( )A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分也不必要条件3.已知a ,b 是不同的直线,α,β是不同的平面,若a∥α,b∥β,α∥β,则a 与b 的位置关系是( )A. 平行B. 平行或异面C. 相交D. 平行或异面或相交4.如图,矩形O'A'B'C'是用斜二测画法画出的一个水平放置的平面图形的直观图,其中O'A'=6,O'C'=3,则该平面图形的面积是( )A.36√2B.9√22C.9D. 365.用一个平行于圆锥底面的平面截这个圆锥,截得圆台上、下底面半径的比是1∶4,且该圆台的母线长为9,则截去的圆锥的母线长为( )A. 94B. 3C. 12D. 366.设三棱柱的侧棱垂直于底面,所有棱的长都为a ,顶点都在一个球面上,则该球的表面积为( )A. πa 2B. 73πa 2C. 113πa 2D. 5πa 27.(多选)如图是正方体的平面展开图,在这个正方体中:下列命题中,所有正确命题的是( )A.BM∥平面DE ;∥平面AF ;C.平面BDM∥平面AFN ;D.平面BDE∥平面NCF.8.(多选) l 1,l 2,l 3是空间三条不同的直线,则下列结论不正确的是( )A .l 1⊥l 2,l 2⊥l 3⇒l 1∥l 3B .l 1⊥l 2,l 2∥l 3⇒l 1⊥l 3C .l 1∥l 2∥l 3⇒l 1,l 2,l 3共面D .l 1,l 2,l 3共点⇒l 1,l 2,l 3共面三、填空题(共4题,每题5分;共20分)9.已知球 O 的半径为4,圆M 与圆N 为该球的两个小圆, AB 为圆M 与圆N 的公共弦,AB =4,若 OM =ON =3,则两圆圆心的距离MN = .10.若某圆锥的高等于其底面圆的半径,则它的底面积和侧面积之比为 .11.已知正四棱锥P-ABCD 的所有棱长都相等,高2√2,则该正四棱锥的表面积为 .12.如图,在正方体ABCD-A1B1C1D1中,AB=2,点E为AD的中点,点F在CD上.若EF∥平面AB1C,则线段EF的长度等于.四、计算题(共3题,共计40分)13.(10分)如图所示,已知E,F,G,H分别是正方体ABCD-A1B1C1D1的棱AB,BC,CC1,C1D1的中点.求证:FE,HG,DC三线共点.14.(15分)四边形ABCD是平行四边形,点P是平行四边形外一点,M是PC的中点,在DM上取一点G,过点G和AP作平面交平面BDM于GH,求证:AP∥GH.15.(15分)如图,在正方体ABCD-A1B1C1D1中,E为BB1的中点,F为DD1的中点.求证:平面BC1F∥平面AD1E.。
2018年秋学期高一年级语文周周练第一单元《再别康桥》试卷班级:学号:姓名:成绩:一、基础知识(24分)1.下列各组中注音无误的一项是( )A.撑.着(zhǎng)彷.徨(páng)凄.清(qī)寂寥.(liáo)B.踟蹰..(chì chù)漫溯.(sù)满载.(zǎi) 迷茫.(máng)C.河畔.(pàn)荡漾.(yàng)青荇.(xìng)长篙.(gāo)D.斑斓.(lán)沉淀.(dìng)似.的(sì)笙.箫(shēng)2.下列书写完全正确的一项是( )A.陷井哀怨轻手蹑脚水波荡漾B.破锭凄婉柔声细语波光艳影C.回溯太息力挽狂澜招摇过市D.沉淀迷茫悄无生息沉默寡言3.下列各句中,加点的成语使用恰当的一项是( )A.徐志摩可以说是新诗的诗魂,茅盾说他既是中国的布尔乔亚的“开山诗人”,又是“末代诗人”,他以后的继承者未有能望.其项背...的。
B.诗人在乘船离开马赛的归国途中,面对汹涌的大海和辽阔的天空,展纸执笔,信手拈来....,记下了这次重返康桥的切身感受。
C.他完全沉醉在大自然的怀抱里,临到他要离开伦敦的前夕,在一个美丽的黄昏,他漫步于康桥,举步维艰....,写下了这首诗。
D.夕阳下流淌的康河,波光潋滟,栩栩如生....,河畔的金柳姿态婀娜如妩媚的新娘,动人心弦。
4.下列句子中加点词语的解释,错误的一项是( )A.向青草更青处漫溯..(游走)B.在星辉斑斓..里放歌(灿烂多彩)C.像我一样地默默彳亍..着(走走停停)D.到了颓圮..的篱墙(坍塌,破败)5.下列句子中,没有语病的一项是( )A.夏天一到,空调的价格战就会愈演愈烈,有的品牌价格甚至减少了1~2倍。
B.看着父亲那灰白的头发,使我不禁热泪盈眶,一家人生活的重担全压在他肩上。
C.英特网作为传媒,可以在世界范围内使各地的人们凭网络共享同样的信息。
2018至2109学年上学期高一年级(数学)周测试卷第7次学号: 班级: 姓名: 得分: (满分100分)一、选择题:(每小题 5 分,共60 分)1.设集合{}{}123234A B ==,,, ,,, 则=A B ( )A. {}123,4,,B. {}123,, C. {}234,, D. {}134,, 【答案】A1.【解析】由题意{1,2,3,4}A B =,故选A.2.=⋅⋅9log 4log 25log 522( )A.5B.6C.9D.82.答案:D3.函数y =x ln(1-x )的定义域为( )A .(0,1)B .[0,1)C .(0,1]D .[0,1]解析:根据题意得⎩⎪⎨⎪⎧1-x >0x ≥0,解得0≤x <1,即所求定义域为[0,1). 答案:B4.下列函数中既是偶函数又在区间(0,1)上单调递增的是( )A .y =1xB .y =lg|x |C .y =2xD .y =-x 2 4.解析:y =1x,y =2x 不是偶函数,排除A 、C ;y =-x 2是偶函数,但在(0,1)上单调递减,y =lg|x |是偶函数,根据图象,可判断在区间(0,1)上单调递增,故选B.5.函数f (x )=2x +3x 的零点所在的一个区间是( )A .(-2,-1)B .(-1,0)C .(0,1)D .(1,2)5解析:因为函数 f (x )的图象是连续不断的一条曲线,又f (-1)=2-1-3<0,f (0)=1>0,所以f (-1)·f (0)<0,故函数零点所在一个区间是(-1,0)故选B.5.答案:B6.下列函数中,值域是(0,+∞)的是( )A .y = x 2-2x +1B .y =x +2x +1(x ∈(0,+∞)) C .y =1x 2+2x +1(x ∈N ) D .y =1|x +1|6.解析:A 项值域为y ≥0,B 项值域为y >1,C 项中x ∈N ,故y 值不连续,只有D 项y >0正确.6.答案:D7.设f (3x )=9x +52,则f (1)=________.解析:令3x =1,则x =13.∴f (1)=9×13+52=4=2.7.答案:2 8.已知函数f (x )=⎩⎨⎧2x ,x >0,x +1,x ≤0.若f (a )+f (1)=0,则实数a 的值等于( ) A .-3B .-1C .1D .3 8.解析:因为f (1)=2,所以由f (a )+f (1)=0,得f (a )=-2,所以a 肯定小于0,则f (a )=a +1=-2,解得a =-3,故选A.8.答案:A9.若a =3(3-π)3,b =4(2-π)4,则a +b =( )A .1B.5 C .-1D .2π-5 9.解析:∵a =3(3-π)3=3-π,b =4(2-π)4=π-2,∴a +b =3-π+π-2=1.9.答案:A10.有以下四个结论:①lg(lg 10)=0,②ln(ln e)=0,③若lg x =10,则x =100,④若ln x =e ,则x =e 2.其中正确的是( )A .①③B.②④ C .①② D .③④ 10.解析:①lg(lg 10)=0,正确.②ln(ln e)=0,正确.若lg x =10,则x =1010,③不正确.若ln x =e ,则x =e e ,故④不正确.所以选C.10.答案:C11.当0≤x ≤2时,a <-x 2+2x 恒成立,则实数a 的取值范围是( )A .(-∞,1]B .(-∞,0]C .(-∞,0)D .(0,+∞)11.解析:a <-x 2+2x 恒成立,即a 小于函数f (x )=-x 2+2x ,x ∈[0,2]的最小值, 而f (x )=-x 2+2x ,x ∈[0,2]的最小值为0,∴a <0.12.答案:C12.f (x )=|x -1|+|x +1|是( )A .奇函数B .偶函数C .非奇非偶函数D .既奇又偶函数解析:函数定义域为x ∈R ,关于原点对称.∵f (-x )=|-x -1|+|-x +1|=|x +1|+|x -1|=f (x )∴f (x )=|x -1|+|x +1|是偶函数12.答案:B二、填空题:(每小题5分,共 20 分)13.已 知集合 ;13.答案:}8,5,3,1{ 14.lg 5+lg 20的值是________.14.解析:原式=12lg 5+12(lg 4+lg 5) =12lg 5+lg 2+12lg 5=lg 2+lg 5=1. 14.答案:115.若=+=-x x x 44,14log 3则 ;15.答案:310 16.函数y =x )51(-3x 在区间[-1,1]上的最大值等于________. 16.解析:由y =⎝⎛⎭⎫15x 是减函数,y =3x 是增函数,可知y =⎝⎛⎭⎫15x -3x 是减函数,故当x =-1时函数有最大值143. 15.答案:143三、解答题:(共20分)17.已知函数f (x )=2x -12x +1. =⋂==B A B A 则},13,8,5,3,1{},8,5,3,2,1{(1)求f[f(0)+4]的值;(2)求证:f(x)在R上是增函数;(3)解不等式:0<f(x-2)<15 17.解析:(1)∵f(0)=20-120+1=0,∴f[f(0)+4]=f(0+4)=f(4)=24-124+1=1517.(2)设x1,x2∈R且x1<x2,则2x2>2x1>0,2x2-2x1>0,∴f(x2)-f(x1)=2x2-12x2+1-2x1-12x1+1=2(2x2-2x1)(2x2+1)(2x1+1)>0,即f(x1)<f(x2),所以f(x)在R上是增函数.(3)由0<f(x-2)<1517得f(0)<f(x-2)<f(4),又f(x)在R上是增函数,∴0<x-2<4,即2<x<6,所以不等式的解集是{x|2<x<6}。
高一(数学)周测试卷一、、选择题(共8小题,共40分)1.设e 1,e 2是平面内所有向量的一组基底,则下面四组向量中,不能作为基底的是( ).A. e 1与e 1-e 2B. e 1+e 2与e 1-3e 2C. e 1-2e 2与-3e 1+6e 2D. 2e 1+3e 2与e 1-2e 22.在△ABC 中,A=60°,a=4√3,b=4√2,则B 等于( )A. 45°或135°B. 135°C. 45°D. 以上答案都不对3.在△ABC 中,cos C 2=55,BC =1,AC =5,则AB =( ) A.4 2 B.30 C.29 D.254.设a ,b 是非零向量,则“a 2=a ·b ”是“a =b ”的( )A. 充分不必要条件B. 必要不充分条件C. 充分必要条件D. 既不充分也不必要条件5.在△ABC 中,已知acos A+bcos B=ccos C ,则△ABC 是( ).A. 等腰三角形B. 直角三角形C. 等腰直角三角形D. 等边三角形6.若△ABC 的内角A ,B ,C 所对的边a ,b ,c 满足(a+b)2-c 2=4,且C=60°,则ab 的值为( ). A. 43 B. 8-4√3 C. 1 D. 23 7.(多选)在△ABC 中,下列结论正确的是( ).A.若(AB →+AC →)·(AB →−AC →)=0,则△ABC 为等腰三角形B.AB →·BC →<|AB →|·|BC →|C.若 AC →·AB →>0,则△ABC 为锐角三角形D.AB →−AC →=BC →8.(多选)如图,在菱形ABCD 中,∠DAB=120°,则以下说法正确的是( )A.与AB →相等的向量只有一个(不包括AB →本身)B.与AB →的模相等的向量有9个(不包括AB →本身)C.BD →的模为DA →模的√3倍D.CB →与DA →不共线二、填空题(共4题;共20分)9.如图,C ,D 是△AOB 的边AB 的三等分点,设 OA →=e 1, OB →=e 2,以{e 1,e 2}为基底来表示 OC →= , OD →= .10.已知向量a =(1,m),b =(-1,-2),且(a -b )⊥b ,则实数m= .11.已知向量a ,b 满足|a |=2,a ·(a +2b )=12,则a ·b = .12.某校运动会举行升旗仪式,在坡度为15°的看台上,同一列上的第一排和最后一排测得旗杆顶部的仰角分别为60°和30°,第一排和最后一排的距离为10√6m(如图),则旗杆的高度为 .三、解答题(共3小题,共40分)13.(10分)已知非零向量a ,b 满足|a |=1,且(a -b )·(a +b )= 34.(1)求|b |;(2)当a ·b =- 14时,求向量a 与a +2b 的夹角θ的值.14. (15分)已知e 1,e 2是平面内两个不共线的非零向量,AB →=2e 1+e 2,BE →=-e 1+μe 2,EC →=-2e 1+e 2,且A ,E ,C 三点共线.(1) 求实数μ的值;(2) 若e 1=(2,1),e 2=(2,-2),求BC →的坐标;(3) 已知D (3,5),在(2)的条件下,若A ,B ,C ,D 四点按时针顺序构成平行四边形,求点A 的坐标15.(15分)在△ABC 中,角A,B,C 所对的边分别为a,b,c ,且bsin B=asin A+(c-a)sin C.(1)求B ;(2)若3sin C=2sin A ,且△ABC 的面积为6√3,求b.。
高一数学 上学期 第八次周测试卷一、选择题:(本大题共12小题,每小题5分,共60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.函数y =log 2x +3(x ≥1)的值域是( )A.[)+∞,2B.(3,+∞)C.[)+∞,3D.(-∞,+∞) 2.函数log (2)1a y x =++的图象过定点( ) A.(1,2) B.(2,1)C.(-2,1)D.(-1,1)3. 函数]1,0[在xa y =上的最大值与最小值的和为3,则=a ( )A .21 B .2 C .4 D .41 4、若lg 2,lg 3a b ==,则lg 0.18=( )A .22a b +-B .22a b +-C .32a b --D .31a b +- 5.函数lg y x =( )A . 是偶函数,在区间(,0)-∞ 上单调递增B . 是偶函数,在区间(,0)-∞上单调递减C . 是奇函数,在区间(0,)+∞ 上单调递增D .是奇函数,在区间(0,)+∞上单调递减6.若函数)1,0)((log ≠>+=a a b x y a 的图象过两点(1,0)-和(0,1),则( ) A .2,2a b == B.2a b == C .2,1a b == D.a b ==7.若函数2()48f x x kx =--在[5,8]上是单调函数,则k 的取值范围是( ) A .(],40-∞ B .[40,64] C .(][),4064,-∞+∞ D .[)64,+∞8.下列函数中,在()0,2上为增函数的是( ) A 、12log (1)y x =+ B、2log y = C 、21log y x = D、2log (45)y x x =-+ 9..若y=log 56·log 67·log 78·log 89·log 910,则有 ( ) A. y ∈(0 , 1) B . y ∈(1 , 2 ) C. y ∈(2 , 3 ) D. y =1 10.若43433log 3,log 4,log 4a b c ===,则( ) A .a b c << B .c b a << C .c a b << D .b a c <<11. 设函数200,0(),()1,lg(1),0x x f x f x x x x ≤=>+>⎧⎨⎩若则的取值范围为( )A .(-1,1)B .(-1,+∞)C .(,9)-∞D .(,1)(9,)-∞-+∞12.下面四个结论:①偶函数的图象一定与y 轴相交;②奇函数的图象一定过原点;③偶函数的图象关于y 轴对称;④既是奇函数又是偶函数的函数一定是f(x)=0(x ∈R),其中真命题有( )个。
高一(数学)周测试卷一、选择题(共8小题,共40分)1.已知△ABC 中,AB →+AC →=2AD →,则BD →-DC →=( )A .2BD →B .BC → C .2AD →D .02.已知向量a =(3,-1),b =(-1,2),若|a -λb |=5,则λ=A .1或-3B .1C .3D .1或33.已知向量a =(-1,2),b =(1,m),则 “m<12”是“<a,b >为钝角”的 A.充分不必要条件 B.必要不充分条件C.充要条件D.既不充分也不必要条件4.已知AB →=a +5b ,BC →=-2a +8b ,CD →=3()a -b ,则( )A .A ,B ,D 三点共线 B .A ,B ,C 三点共线 C .B ,C ,D 三点共线 D .A ,C ,D 三点共线5.已知e 1,e 2是单位向量,e 1·e 2=-23,若平面向量a 满足a ·e 1=1,a ·e 2=2,且a =x 0e 1+y 0e 2,则x 0+y 0= A. 6B. 7C. 8D. 96.已知单位向量 a →,b →满足 a →⋅b →=0,若向量 c →=√7a →+√2b →,则 sin〈a →,c →〉=( )A. √73B. √23C. √79D. √297.设向量a =(3,1),b =(x ,-3),c =(1,-3),若b ∥c ,则a -b 与b 的夹角为( )A .30°B .60°C .120°D .150°8.已知 sinαsinα+cosα=12,且向量 AB →=(tan α,1), BC →=(2tan α,-3),则AC →=( ).A. (3,-2)B. (-3,-2)C. (1,-4)D. (-1,4)二、填空题(共4题;共25分)9.如图,C ,D 是△AOB 的边AB 的三等分点,设 OA →=e 1,OB →=e 2,以{e 1,e 2}为基底来表示 OC →= , OD →= .10.已知向量a =(-2,1),b =⎝⎛⎭⎫λ,12,且|λa +b |=132,则λ=________.11.已知向量a =(2,1),b =(x ,-1),且a -b 与b 共线,则x 的值为 .12.在平行四边形ABCD 中,M 为BC 的中点,若AB ⃗=λAM ⃗+μDB ⃗,则 λμ= .三、解答题(共3小题,共35分)13.(本题11分)已知向量a =(1,2),b =(2,k),c =(8,7). (1)当k 为何值时,a ∥(b+c );(2)当k=1时,求满足条件c =m a +n b 的实数m ,n 的值14.(本题12分)已知平面向量a =(1,x),b =(2x +3,-x)(x∈R).(1)若a ⊥b ,求x 的值;(2)若a ∥b ,求|a -b |.15.(本题12分)已知三个点A(2,1),B(3,2),D(-1,4). (1)求证:AB⊥AD;(2)要使四边形ABCD 为矩形,求点C 的坐标并求矩形ABCD 两条对角线所成的锐角的余弦值.答案:1. D 解析:因为△ABC 中,AB →+AC →=2AD →,所以AB →-AD →+AC →-AD →=0,得DB →+DC →=0,所以BD →-DC →=0.故选D .2.A 解析:因为a =(3,-1),b =(-1,2),所以a -λb =(3+λ,-1-2λ),又|a -λb |=5,所以(3+λ)2+(-1-2λ)2=25,解得λ=1或λ=-3.3. B 解析: 由题意得,a ·b =-1+2m .若m <12,则a ·b <0,但当m =-2时,a =-b ,<a ,b >=π,不是钝角,故充分性不成立.若<a ,b >为钝角,则a ·b <0,且a ≠λb (λ∈R ),解得m <12且m ≠-2.故“m <12”是“<a ,b >为钝角”的必要不充分条件.4. A 解析:∵AB →=a +5b ,BC →=-2a +8b ,CD →=3()a -b ,∴BD →=BC →+CD →=a +5b ,∴AB →=BD →,∴AB →与BD→共线,∴A ,B ,D 三点共线.5.D 解析: a ·e 1=(x 0e 1+y 0e 2)·e 1=x 0-23y 0=1①,a ·e 2=(x 0e 1+y 0e 2)·e 2=-23x 0+y 0=2 ②, ①②相加得13(x 0+y 0)=3,则x 0+y 0=9.6.B 解析: 因为 a →,b →是单位向量,所以 |a →|=|b →|=1.因为 c →=√7a →+√2b →,所以 |c →|=|√7a →+√2b →|=√(√7a →+√2b →)2=√7|a →|2+2|b →|2=3.所以cos <a →,c →>=a →·c→|a →||c →|=a →(√7a →+√2b →)|a →||c →|√7|c →|=√73所以 sin〈a →,c →〉=(√73)=√23.7. D 解析:因为b ∥c ,所以-3x =(-3)×1,所以x =3,所以b =(3,-3),a -b =(0,4).所以a -b 与b 的夹角的余弦值为b ·(a -b )|a -b ||b |=-124×23=-32,所以a -b 与b 的夹角为150°.故选D . 8. A 解析:由 sinαsinα+cosα=12,可得2sin α=sin α+cos α,于是tan α=1,因此 AC →=AB →+BC →=(3tan α,-2)=(3,-2).9.OC →=OA →+AC →=OA →+13AB →=e 1+ 13(e 2-e 1)= 23e 1+ 13e 2,;OD →=OC →+CD →=OC →+13AB →= (23e 1+13e 2)+13(e 2-e 1)= 13e 1+ 23e 2.10.由已知易得λa +b =⎝⎛⎭⎫-λ,λ+12,则(-λ)2+⎝⎛⎭⎫λ+122=134,解得λ=1或λ=-32.11.∵a =(2,1),b =(x ,-1),∴a -b =(2-x ,2).又a -b 与b 共线,∴2x =-2+x ,解得x =-2. 12.∵DB ⃗=AB ⃗−AD ⃗=AB ⃗−BC ⃗=AB ⃗-2BM ⃗=3AB ⃗-2AM ⃗,∴AB ⃗=λAM ⃗+3μAB ⃗-2μAM ⃗,∴(1-3μ)AB ⃗=(λ-2μ)AM ⃗.∵AB ⃗和AM ⃗是不共线向量,∴{1-3μ=0,λ-2μ=0,解得{μ=13,λ=23,∴λμ=29. 13.(1)∵a=(1,2),b=(2,k),c=(8,7),∴b+c=(10,k+7),又a∥(b+c),∴1×(k+7)-2×10=0,解得k=13,∴当k=13时,a∥(b+c). (2)当k=1时,b=(2,1).c=ma+nb ,即(8,7)=(m+2n ,2m+n), ∴ {m +2n =8,2m +n =7,解得 {m =2,n =3.14.解:(1)∵a⊥b,∴a·b=0,即1×(2x+3)+x×(-x)=0,解得x =-1或x =3.(2)∵a∥b,∴1×(-x)-x(2x +3)=0,解得x =0或x =-2. 当x =0时,a =(1,0),b =(3,0),∴a-b =(-2,0), ∴|a-b|=2.当x =-2时,a =(1,-2),b =(-1,2),∴a-b =(2,-4), ∴|a-b|=2 5.∴|a-b|=2或2 5.15.(1)证明:∵A(2,1),B(3,2),D(-1,4),∴AB →=(1,1),AD →=(-3,3).又∵AB →·AD →=1×(-3)+1×3=0, ∴AB →⊥AD →,即AB⊥AD.(2)解:∵AB →⊥AD →,四边形ABCD 为矩形, ∴DC →=AB →.设C 点坐标为(x ,y),则AB →=(1,1),DC →=(x +1,y -4), ∴⎩⎨⎧x +1=1,y -4=1,解得⎩⎨⎧x =0,y =5.∴C 点坐标为(0,5). 由于AC →=(-2,4),BD →=(-4,2), ∴AC →·BD →=8+8=16.又|AC →|=25,|BD →|=25, 设AC →与BD →的夹角为θ,则cos θ=AC →·BD →|AC →||BD →|=1620=45>0,∴矩形ABCD 的两条对角线所成的锐角的余弦值为45.。
第20周周测试卷答题区:1-5:________________ 6-10: __________________11-15: ________________ 16-20: _________________选择题AAmerican schools begin in September after a long summer holiday. There are two terms in a school year. The first term is from September to January and the second is from February to June. Most American children begin to go to school when they are five years old. Most students are seventeen or eighteen years old when they finish high school.High school students take only four or five subjects each term. They usually go to the same class every day, and they have homework for every class. After class, they do many interesting things.After high school, many students go to college.They can go to a small one or a large one. They usually have to pay a lot of money . So many college students work after class to get the money for their studies.In American high school, most students take English, science , math and history. These are basic courses and each course is as useful as the others. In English class , the students study grammar and read famous literature . In science class, they study biology, chemistry or physics. History is more interesting to some students because they learn about important events and places in the United States. Students take other course , too . These are electives. Some of them are music , home economics and computer science . Students needn’t take all of thes e courses . Some study computer science because they think it is more practical . In each class , teachers give students exams . Some exams are difficult than others, but a good student can always do well. 1.After high school ,many American students go_________.A. homeB. to middle schoolC. to collegeD. to work2. Many college students get the money for their studies by _______.A. themselvesB. their parentsC. their teachersD. their friends3. In science class , American high students study __________ .A. history , physics or biologyB. chemistry , geography or mathC. Chinese , math or EnglishD. physics ,biology or chemistry4. The main idea of the passage is __________.A. American high school and courses.B. American college school .C. In each class , teachers give students examsD. Students needn’t take all of these courses.BMy twin sister is my best friend . We look, speak and think alike. However, thingsweren’t always this w ay. When we were younger, we often competed over who learned how to do things first .Unluckily, I was always the second since I am the younger one by four minutes.My sister was the “leader” when we played. I didn’t care because it was better to play with a bossy sister than to play alone.We grew out of our “leader/ follower” stage in Grade 3. She wasn’t learning as fast as I was , so I taught her in the spare time . I felt needed .She was very nice to me when she needed my help. But I didn’t take advantag e of her because I knew that if she was asking me for help , it was serious and I needed to do my best to help her . Through helping her, we because closer.Going through the same experiences has also brought us closer, in Grade 4, we went to the doctor together and found out that we both needed glass as. When we were 11, we learned how to ride bikes together and later we developed our artistic skills by learning from each other . In Grade 8 ,we both got graces and felt the same pain. I feel lucky to have someone to share the same experiences with.I love being a twin because I know that as long as she lives, I’ll never be alone and she’ll always love me back.5. If someone is bossy , we probably mean he /she ______.A. is good at doing many thingsB. is afraid of people around him/herC. likes asking other people for adviceD. likes asking others to do this or that6. What did the writer do when her twin sister needed her ?______A. She took advantage of herB. She asked her sister to be nice to her.C. She tried her best to help her .D. She refused to offer her any help7. What is Paragraph 4 mainly about?_______A. Some experiences that the writer and her sister went through together.B. Some things that the writer was looking forward to doingC. Some experiences that the writer and her sister didn’t want to rememberD. Some experiences that made the writer feel she was lucky to have many friends.8. After reading the passage , we learn that the writer _________.A. feels very lonely all the timeB. isn’t as smart as her twin sisterC. likes making friends with others.D. feels lucky to have a twin sisterCI was tired and hungry after a long day of work. When I walked into the living room , my 12-year-old son looked up at me and said , “I love you.”I did not know what to say , and I just stood there , looking down at him. My first thought was that he must need help with his homework . Then I asked, “What was that all about ?”“Nothing,” he said , “my teacher said we should tell our parents we lo ve them and see what they say.”The next day I called his teacher to find out more about what my son said and how the other parents had reacted . “Most of the fathers had the same response as you did .”the teacher said , “ When I first suggested that we t ry this, I asked the children what they thought their parents could say .Some of them thought their parents wouldhave heart trouble.”Then the teacher explained , “I want my students to know that feeling love is an important part of health. I’m trying to tell them it’s too bad that we don’t express our feelings. A boy should tell his father or mother he loves him or her .”The teacher understands that sometimes it is difficult for some of us to say something that is good for us to say.That evening when my son came to me , I took him in my arms and held on for an extra moment, saying, “Hey , I love you ,too.”I don’t know if saying that made either of us healthier, but it did feel pretty good.9. Some children thought their parents would have _______.A. their workB. heart problemC. their friendsD. their family10. The teacher said his students knew that ______ is very important.A their study B. money C. health D. their homework11. In the passage, “either of us” refers to _______.A. mother and fatherB. teacher and motherC. teacher and sonD. mother and sonDAbout the year 1900,a small,dark haired hot boy named Charlie Chaplin was often seen waiting outside the back entrance of London Theatre. He looked thin and hungry. He was hoping to get work in show business. He could sing and dance;above all,he knew how to make people laugh. But he couldn't get work and so he wandered about the city streets. Sometimes he was sent away to a home for children who had no parents.But twenty years later this name Chaplin became the greatest,best-known,and best-loved comedian in the world. Any visitor to the cinema must have seen some of Chaplin's filmstrips (胶片).People everywhere have sat and laughed at them until the tears ran down their faces. Even people who don't understand English can enjoy Chaplin's films though most of them are silent. It isn't what he says that makes people laugh. His comedy doesn't depend upon words and languages. It depends upon little actions which mean the same thing to people all over the world. Acting out,without words,common human situations play an important part in the dances and plays of many countries. It's a kind of world language.Chaplin lived most of his life in America and died in Switzerland on Christmas Day,1977,at the age of eighty eight. The world was astonished at the news of the death and burst into sadness.12.Why was young Chaplin waiting outside the back entrance of the theatre? A.Because he had no money to buy a ticket.B.Because he wanted to get a returned ticket.C.Because he wanted to play a part in a play in order to make a living. D.Because he wanted to see the famous actors or actresses after the performance. 13.It was ________that made people enjoy his films.A.wonderful dialogues B.the beautiful musicC.his funny appearance D.his own manner of acting14.The reason why Chaplin is regarded as king of comedy is that ________.A.his films are most silentB.he knew how to make people laughC.he could not only act but al so write comediesD.he acted out the common human situation best in his comedy15.What's the best title of this passage?A.Charlie Chaplin,A Famous Humorous ActorB.Charlie Chaplin,A WorkerC.Charlie Chaplin,A Small BoyD.Charlie Chaplin,A Director选做题:语法填空:There was once a guy who suffer ed from a cancer, one that can’t be cured. He was 18 years old and he could die anytime. All his life, he was stuck in his house taken care of by __1__ mother. He never went outside but he was tired __2__ staying home and wanted to go out for once. So he asked his mother and she gave him __3__ (permit).He walked down his block and __4__(find) a lot of stores. He passed a CD store and looked through __5__ front door for a second. He stopped and saw a beautiful girl about his age. He opened the door and walked in, not looking at anything else but her. He walked __6__(close) until he was finally at the front desk __7__ she sat. She looked up and smi led, “Can I help you?” He said, “I would like to buy a CD.” He picked one out and gave her the money for it. “Would you like me to wrap it for you?” she asked,__8__(smile) again. He nodded and she went to the back. She came back with the wrapped CD and gave _9__ to him. After that, he often bought a CD there. One day, he went there buying a CD like he did every day,and once again she went to the back of the store __10_ came back with it wrapped. He took it and when she wasn’t looking, he left his phone numb er on the desk and ran out...选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and选择题答案1-4 CADA 5-8. DCAD 9-11 BCD 12-15. CDDA选做题答案1.his2. of3. permission4. found5. the6. closer7. where8.smiling9. it 10. and。