江苏省无锡市大桥实验中学2020-2021学年度九年级上册9AU1单元练习卷

2020-2021无锡市大桥中学九年级数学上期中试卷含答案一、选择题1．函数y ＝﹣x 2﹣4x ﹣3图象顶点坐标是（ ）A ．（2，﹣1）B ．（﹣2，1）C ．（﹣2，﹣1）D ．（2，1） 2．二次函数y ＝ax 2+bx+c （a≠0）的图象如图所示，那么下列说法正确的是（ ）A ．a ＞0，b ＞0，c ＞0B ．a ＜0，b ＞0，c ＞0C ．a ＜0，b ＞0，c ＜0D ．a ＜0，b ＜0，c ＞03．已知抛物线y=x 2-2mx-4（m ＞0）的顶点M 关于坐标原点O 的对称点为M′，若点M′在这条抛物线上，则点M 的坐标为（ ）A ．（1，-5）B ．（3，-13）C ．（2，-8）D ．（4，-20）4．如图所示的暗礁区，两灯塔A ，B 之间的距离恰好等于圆的半径，为了使航船（S ）不进入暗礁区，那么S 对两灯塔A ，B 的视角∠ASB 必须（ ）A ．大于60°B ．小于60°C ．大于30°D ．小于30° 5．已知()222226x y y x +-=+，则22x y +的值是（ ） A ．－2B ．3C ．－2或3D ．－2且3 6．在平面直角坐标系中，点A （m ，2）与点B （3，n ）关于y 轴对称，则（ ） A ．m ＝3，n ＝2 B ．m ＝﹣3，n ＝2C ．m ＝2，n ＝3D ．m ＝﹣2，n ＝﹣3 7．若关于x 的方程240kx x -+=有实数根，则k 的取值范围是( )A ．k 16≤B ．1k 16≤C ．k 16≤且k 0≠D ．1k 16≤且k 0≠ 8．若关于x 的一元二次方程ax 2+bx ﹣1＝0（a ≠0）有一根为x ＝2019，则一元二次方程a （x ﹣1）2+b （x ﹣1）＝1必有一根为（ ）A ．12019B ．2020C ．2019D ．20189．将函数y=kx 2与y=kx+k 的图象画在同一个直角坐标系中，可能的是（ ）A．B．C．D．10．用1、2、3三个数字组成一个三位数，则组成的数是偶数的概率是（）A．13B．14C．15D．1611．在方格纸中，选择标有序号①②③④中的一个小正方形涂黑，与图中涂色部分构成中心对称图形．该小正方形的序号是（）A．①B．②C．③D．④12．如图，在⊙O中，AB是⊙O的直径，AB＝10，»»»AC CD DB==，点E是点D关于AB的对称点，M是AB上的一动点，下列结论：①∠BOE＝60°；②∠CED＝12∠DOB；③DM⊥CE；④CM＋DM的最小值是10，上述结论中正确的个数是()A．1B．2C．3D．4二、填空题13．已知、是方程的两个根，则代数式的值为______.14．已知方程x2﹣3x+k=0有两个相等的实数根，则k=_____．15．新园小区计划在一块长为20米，宽12米的矩形场地上修建三条互相垂直的长方形甬路（一条橫向、两条纵向，且横向、纵向的宽度比为3：2），其余部分种花草．若要使种花草的面积达到144米2．则横向的甬路宽为_____米．16．如图，五边形ABCD内接于⊙O，若AC=AD，∠B+∠E=230°，则∠ACD的度数是__________．17．要为一幅矩形照片配一个镜框，如图，要求镜框的四条边宽度都相等，且镜框所占面积是照片本身面积的四分之一，已知照片的长为21cm，宽为10cm，求镜框的宽度．设镜框的宽度为xcm，依题意列方程，化成一般式为_____．18．在阳光中学举行的春季运动会上，小亮和大刚报名参加100米比赛，预赛分A B C D四组进行，运动员通过抽签来确定要参加的预赛小组，小亮和大刚恰好抽到同,,,一个组的概率是_______．19．用半径为12cm，圆心角为90°的扇形纸片围成一个圆锥的侧面（接缝忽略不计），则该圆锥底面圆的半径为_______cm．20．如图，在扇形AOB中，∠AOB=90°，点C为OA的中点，CE⊥OA交»AB于点E，以点O为圆心，OC的长为半径作»CD交OB于点D，若OA=2，则阴影部分的面积为 .三、解答题21．“a2≥0”这个结论在数学中非常有用，有时我们需要将代数式配成完全平方式．例如：x2+4x+5＝x2+4x+4+1＝（x+2）2+1，∵（x+2）2≥0，∴（x+2）2+1≥1，∴x2+4x+5≥1．试利用“配方法”解决下列问题：（1）填空：x2﹣4x+5＝（x）2+；（2）已知x2﹣4x+y2+2y+5＝0，求x+y的值；（3）比较代数式：x2﹣1与2x﹣3的大小．22．已知：如图，AB是⊙O的弦，⊙O的半径为10，OE、OF分别交AB于点E、F，OF 的延长线交⊙O于点D，且AE=BF，∠EOF=60°．（1）求证：△OEF是等边三角形；（2）当AE=OE时，求阴影部分的面积．（结果保留根号和π）23．工人师傅用一块长为10dm，宽为6dm的矩形铁皮制作一个无盖的长方体容器，需要将四角各裁掉一个正方形．（厚度不计）（1）在图中画出裁剪示意图，用实线表示裁剪线，虚线表示折痕；并求长方体底面面积为12dm2时，裁掉的正方形边长多大？（2）若要求制作的长方体的底面长不大于底面宽的五倍，并将容器进行防锈处理，侧面每平方分米的费用为0.5元，底面每平方分米的费用为2元，裁掉的正方形边长多大时，总费用最低，最低为多少？24．三辆汽车经过某收费站下高速时，在2个收费通道A，B中，可随机选择其中的一个通过．（1）三辆汽车经过此收费站时，都选择A通道通过的概率是；（2）求三辆汽车经过此收费站时，至少有两辆汽车选择B通道通过的概率．25．如图，在中，，是的外接圆，点P在直径BD的延长线上，且．求证：PA是的切线；若，求图中阴影部分的面积结果保留和根号【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】【分析】将函数解析式化为顶点式，即可得到顶点坐标.【详解】解：∵y ＝﹣x 2﹣4x ﹣3＝﹣（x 2+4x+4﹣4+3）＝﹣（x+2）2+1 ∴顶点坐标为（﹣2，1）；故选：B ．【点睛】本题考查了二次函数，解题关键是能将一般式化为顶点式.2．B解析：B【解析】【分析】利用抛物线开口方向确定a 的符号，利用对称轴方程可确定b 的符号，利用抛物线与y 轴的交点位置可确定c 的符号．【详解】∵抛物线开口向下，∴a ＜0，∵抛物线的对称轴在y 轴的右侧，∴x ＝﹣2b a＞0， ∴b ＞0， ∵抛物线与y 轴的交点在x 轴上方，∴c ＞0，故选：B ．【点睛】本题考查了二次函数图象与系数的关系：对于二次函数y ＝ax 2+bx +c （a ≠0），二次项系数a 决定抛物线的开口方向和大小：当a ＞0时，抛物线向上开口；当a ＜0时，抛物线向下开口；一次项系数b 和二次项系数a 共同决定对称轴的位置：当a 与b 同号时（即ab ＞0），对称轴在y 轴左； 当a 与b 异号时（即ab ＜0），对称轴在y 轴右；常数项c 决定抛物线与y 轴交点位置：抛物线与y 轴交于（0，c ）；抛物线与x 轴交点个数由△决定：△＝b 2﹣4ac ＞0时，抛物线与x 轴有2个交点；△＝b 2﹣4ac ＝0时，抛物线与x 轴有1个交点；△＝b 2﹣4ac ＜0时，抛物线与x 轴没有交点．3．C解析：C【解析】【分析】【详解】解：22224=()4y x mx x m m =-----，∴点M （m ，﹣m 2﹣4），∴点M′（﹣m ，m 2+4），∴m 2+2m 2﹣4=m 2+4．解得m=±2．∵m ＞0，∴m=2，∴M （2，﹣8）． 故选C ．【点睛】本题考查二次函数的性质． 4．D解析：D【解析】试题解析：连接OA ，OB ，AB ，BC ，如图：∵AB=OA=OB ，即△AOB 为等边三角形，∴∠AOB=60°，∵∠ACB 与∠AOB 所对的弧都为»AB ，∴∠ACB=12∠AOB=30°， 又∠ACB 为△SCB 的外角， ∴∠ACB ＞∠ASB ，即∠ASB ＜30°．故选D5．B解析：B【解析】试题分析：根据题意，先移项得()2222260x y y x +---=，即()2222260x y x y （）+-+-=，然后根据“十字相乘法”可得2222(2)(3)0x y x y +++-= ，由此解得22x y +=-2（舍去）或223x y +=.故选B.点睛：此题主要考查了高次方程的解法，解题的关键是把其中的一部分看做一个整体，构造出简单的一元二次方程求解即可.6．B解析：B【解析】【分析】根据“关于y 轴对称的点，横坐标互为相反数，纵坐标相同”解答．【详解】∵点A （m ，2）与点B （3，n ）关于y 轴对称，∴m ＝﹣3，n ＝2．故选：B ．【点睛】本题考查了关于x 轴、y 轴对称的点的坐标，解决本题的关键是掌握好对称点的坐标规律：（1）关于x 轴对称的点，横坐标相同，纵坐标互为相反数；（2）关于y 轴对称的点，纵坐标相同，横坐标互为相反数；（3）关于原点对称的点，横坐标与纵坐标都互为相反数．7．B解析：B【解析】【分析】当0k =时，代入方程验证即可，当0k ≠时，根据方程的判别式△≥0可得关于k 的不等式，解不等式即得k 的取值范围，问题即得解决.【详解】解：当0k =时，40x -+=，此时4x =，有实数根；当0k ≠时，∵方程240kx x -+=有实数根，∴△2(1)440k =--⨯⨯…，解得：116k …，此时116k …且0k ≠； 综上，116k …．故选B. 【点睛】本题考查了一元二次方程的根的判别式，熟知一元二次方程的根的判别式与根的关系是解题的关键.8．B解析：B【解析】【分析】对于一元二次方程a （x-1）2+b （x-1）-1=0，设t=x-1得到at 2+bt-1=0，利用at 2+bt-1=0有一个根为t=2019得到x-1=2019，从而可判断一元二次方程a （x-1）2+b （x-1）=1必有一根为x=2020．【详解】对于一元二次方程a （x-1）2+b （x-1）-1=0，设t=x-1，所以at 2+bt-1=0，而关于x 的一元二次方程ax 2+bx-1=0（a≠0）有一根为x=2019，所以at2+bt-1=0有一个根为t=2019，则x-1=2019，解得x=2020，所以一元二次方程a（x-1）2+b（x-1）=1必有一根为x=2020．故选B．【点睛】本题考查了一元二次方程的解：能使一元二次方程左右两边相等的未知数的值是一元二次方程的解．9．C解析：C【解析】【分析】根据题意，利用分类讨论的方法，讨论k＞0和k＜0，函数y=kx2与y=kx+k的图象，从而可以解答本题．【详解】当k＞0时，函数y=kx2的图象是开口向上，顶点在原点的抛物线，y=kx+k的图象经过第一、二、三象限，是一条直线，故选项A、B均错误，当k＜0时，函数y=kx2的图象是开口向下，顶点在原点的抛物线，y=kx+k的图象经过第二、三、四象限，是一条直线，故选项C正确，选项D错误，故选C．【点睛】本题考查二次函数的图象、一次函数的图象，解答本题的关键是明确题意，利用数形结合的思想解答．10．A解析：A【解析】【分析】【详解】解：用1，2，3三个数字组成一个三位数的所有组合是：123，132，213，231，312，321，是偶数只有2个，所以组成的三位数是偶数的概率是13；故选A．11．D 解析：D 【解析】【分析】根据中心对称图形的概念，如果把一个图形绕某一点旋转180度后能与自身重合，这个图形是中心对称图形.将④涂黑后，与图中阴影部分构成的图形绕第三个正方形的中心旋转180°后，这个图形能与自身重合，是中心对称图.【详解】解：将④涂黑后，与图中阴影部分构成的图形绕第三个正方形的中心旋转180°后，这个图形能与自身重合，是中心对称图.故选：D.【点睛】本题考查的是利用旋转设计图案，中心对称图形是要寻找对称中心，旋转180度后与原图重合.12．C解析：C【解析】【分析】【详解】解：∵弧AC=弧CD=弧DB，∴∠DOB=∠COD=∠BOE=60°，故①正确；∵AB为直径，且点E是点D关于AB的对称点∴∠E=∠ODE，AB⊥DE∴∠CED =30°=12∠DOB，故②正确；∵M和A重合时，∠MDE=60°，∴∠MDE+∠E=90°∴DM⊥CE故③不正确；根据轴对称的性质，可知D与E对称，连接CE，根据两点之间线段最短，可知这时的CM+DM最短，∵∠DOB=∠COD=∠BOE=60°∴CE为直径，即CE=10，故④正确.故选C.【点睛】本题考查了圆周角定理，圆中的有关计算问题和图形的轴对称的应用，关键是熟练地运用定理进行推理和计算，题型较好，综合性比较强，但难度不大．二、填空题13．【解析】【分析】根据一元二次方程解的定义得到a2-a-3=0b2-b-3=0即a2=a+3b2=b+3则2a3+b2+3a2-11a-b+5=2a （a+3）+b+3+3（a+3）-11a-b+5整理 解析：【解析】【分析】根据一元二次方程解的定义得到a 2-a-3=0，b 2-b-3=0，即a 2=a+3，b 2=b+3，则2a 3+b 2+3a 2-11a-b+5=2a （a+3）+b+3+3（a+3）-11a-b+5，整理得2a 2-2a+17，然后再把a 2=a+3代入后合并即可．【详解】∵a ，b 是方程x 2-x-3=0的两个根，∴a 2-a-3=0，b 2-b-3=0，即a 2=a+3，b 2=b+3，∴2a 3+b 2+3a 2-11a-b+5=2a （a+3）+b+3+3（a+3）-11a-b+5=2a 2-2a+17=2（a+3）-2a+17=2a+6-2a+17=23．14．【解析】∵x 2﹣3x+k=0有两个相等的实数根∴△=∴9﹣4k=0∴k=故答案为 解析：94【解析】 ∵x 2﹣3x +k=0有两个相等的实数根，∴△=2(3)410k --⨯⨯=，∴9﹣4k=0，∴k=94． 故答案为94． 15．3【解析】【分析】设横向的甬路宽为3x 米则纵向的甬路宽为2x 米由剩余部分的面积为144米2即可得出关于x 的一元二次方程解之取其较小值即可得出结论【详解】设横向的甬路宽为3x 米则纵向的甬路宽为2x 米根解析：3【解析】【分析】设横向的甬路宽为3x 米，则纵向的甬路宽为2x 米，由剩余部分的面积为144米2，即可得出关于x 的一元二次方程，解之取其较小值即可得出结论．【详解】设横向的甬路宽为3x 米，则纵向的甬路宽为2x 米，根据题意得：（20﹣2×2x ）（12﹣3x ）=144整理得：x 2﹣9x +8=0，解得：x 1=1，x 2=8．∵当x =8时，12﹣3x =﹣12，∴x =8不合题意，舍去，∴x =1，∴3x =3．故答案为3．【点睛】本题考查了一元二次方程的应用，找准等量关系，正确列出一元二次方程是解题的关键． 16．65°【解析】【分析】连接OAOCOD 利用同弧所对的圆心角等于圆周角得2倍求出所求的角即可【详解】解：如图解:连接OAOCOD 在圆的内接五边形ABCDE 中∠B+∠E=230°∠B=(∠AOD+∠CO解析：65°【解析】【分析】连接OA,OC,OD,利用同弧所对的圆心角等于圆周角得2倍求出所求的角即可.【详解】 解：如图解:连接OA,OC,OD,Q 在圆的内接五边形ABCDE 中, ∠B+∠E=230°,Q ∠B=12(∠AOD+∠COD), ∠E=12(∠AOC+∠COD),（圆周角定理） ∴12(∠AOD+∠COD)+ 12(∠AOC+∠COD)= 230°, 即:12（∠AOD+∠COD+∠AOC+∠COD ）= 230°， 可得：∠C0D=o o 2230360⨯-=0100，可得：∠CAD=050,在△ACD 中，AC=AD ，∠CAD=050，可得∠ACD=065,故答案：065.【点睛】此题考查了圆心角、弧、弦的关系,以及圆周角定理,熟练掌握定 理及法则是解本题的关键. 17．8x2+124x ﹣105＝0【解析】【分析】镜框所占的面积为照片面积的四分之一为了不出差错最好表示出照片的面积=4(镜框面积-照片面积)【详解】解：设镜框的宽度为xcm 依题意得：21×10＝4（21 解析：8x 2+124x ﹣105＝0【解析】【分析】镜框所占的面积为照片面积的四分之一,为了不出差错,最好表示出照片的面积=4(镜框面积-照片面积).【详解】解：设镜框的宽度为xcm,依题意,得：21×10＝4[（21+2x）（10+2x）﹣21×10],整理,得：8x2+124x﹣105＝0．故答案为：8x2+124x﹣105＝0．【点睛】本题考查了一元二次方程的应用,解题的难点在于把给出的关键描述语进行整理,解决本题的关键是要正确分析题目中等量关系.18．【解析】【分析】根据题意可以画出相应的树状图从而可以求得甲乙两人恰好分在同一组的概率【详解】如下图所示小亮和大刚两人恰好分在同一组的情况有4种共有16种等可能的结果∴小亮和大刚两人恰好分在同一组的概解析：1 4【解析】【分析】根据题意可以画出相应的树状图，从而可以求得甲、乙两人恰好分在同一组的概率．【详解】如下图所示，小亮和大刚两人恰好分在同一组的情况有4种，共有16种等可能的结果，∴小亮和大刚两人恰好分在同一组的概率是41 164，故答案为：14．【点睛】本题考查列表法与树状图法、用样本估计总体、条形统计图、扇形统计图，解答本题的关键是明确题意，找出所求问题需要的条件，利用数形结合的思想解答19．【解析】【分析】根据扇形的弧长等于圆锥的底面周长利用扇形的弧长公式即可求得圆锥的底面周长然后根据圆的周长公式即可求解【详解】解：圆锥的底面周长是：=6π设圆锥底面圆的半径是r则2πr=6π则r=3故解析：【解析】【分析】根据扇形的弧长等于圆锥的底面周长，利用扇形的弧长公式即可求得圆锥的底面周长，然后根据圆的周长公式即可求解．【详解】解：圆锥的底面周长是：9012180π⨯=6π，设圆锥底面圆的半径是r，则2πr=6π，则r=3．故答案为：3．【点睛】本题考查圆锥的计算．20．【解析】试题解析：连接OEAE∵点C为OA的中点∴∠CEO=30°∠EOC=60°∴△AEO为等边三角形∴S扇形AOE=∴S阴影=S扇形AOB-S扇形COD-（S扇形AOE-S△COE）===解析：312π+.【解析】试题解析：连接OE、AE，∵点C为OA的中点，∴∠CEO=30°，∠EOC=60°，∴△AEO为等边三角形，∴S扇形AOE=26022 3603ππ⨯=，∴S阴影=S扇形AOB-S扇形COD-（S扇形AOE-S△COE）=229029012113 36036032πππ⨯⨯---⨯（）=323 432ππ-+=3 122π+三、解答题21．（1）﹣2，1；（2）1；（3）x2﹣1＞2x﹣3【解析】【分析】（1）直接配方即可；（2）先配方得到非负数和的形式，再根据非负数的性质得到x、y的值，再求x＋y的值；（3）将两式相减，再配方即可作出判断．【详解】解：（1）x2﹣4x+5＝（x﹣2）2+1；（2）x2﹣4x+y2+2y+5＝0，（x﹣2）2+（y+1）2＝0，则x﹣2＝0，y+1＝0，解得x＝2，y＝﹣1，则x+y＝2﹣1＝1；（3）x2﹣1﹣（2x﹣3）＝x2﹣2x+2＝（x﹣1）2+1，∵（x﹣1）2≥0，∴（x﹣1）2+1＞0，∴x2﹣1＞2x﹣3．【点睛】本题考查了配方法的综合应用，配方的关键步骤是：先将一元二次方程的二次项系数化为1，然后在方程两边同时加上一次项系数一半的平方．22．（1）见解析；（2）503 25π-．【解析】【分析】（1）作OC⊥AB于点C，由OC⊥AB可知AC=BC，再根据AE=BF可知EC=FC，因为OC⊥EF，所以OE=OF，再由∠EOF=60°即可得出结论．（2）在等边△OEF中，因为∠OEF=∠EOF=60°，AE=OE，所以∠A=∠AOE=30°，故∠AOF=90°，再由AO=10可求出OF的长，根据S阴影=S扇形AOD﹣S△AOF即可得出结论．【详解】解：（1）证明：作OC⊥AB于点C，∵OC⊥AB，∴AC=BC．∵AE=BF，∴EC=FC．∵OC⊥EF，∴OE=OF．∵∠EOF=60°，∴△OEF是等边三角形．；（2）∵在等边△OEF中，∠OEF=∠EOF=60°，AE=OE，∴∠A=∠AOE=30°．∴∠AOF=90°．∵AO=10，∴OF=3103 tan10AO AOE⋅∠==．∴110350310233ACFS=⨯⨯=V,2901025360AODSππ⋅⋅==扇形．∴50325ACFAODS S Sπ∆=-=-阴影扇形．23．（1）作图见解析；裁掉的正方形的边长为2dm，底面积为12dm2；（2）当裁掉边长为2.5dm的正方形时，总费用最低，最低费用为25元．【解析】试题分析：（1）由题意可画出图形，设裁掉的正方形的边长为xdm，则题意可列出方程，可求得答案；（2）由条件可求得x的取值范围，用x可表示出总费用，利用二次函数的性质可求得其最小值，可求得答案．试题解析：（1）如图所示：设裁掉的正方形的边长为xdm，由题意可得（10﹣2x）（6﹣2x）=12，即x2﹣8x+12=0，解得x=2或x=6（舍去），答：裁掉的正方形的边长为2dm，底面积为12dm2；（2）∵长不大于宽的五倍，∴10﹣2x≤5（6﹣2x），解得0＜x≤2.5，设总费用为w元，由题意可知w=0.5×2x（16﹣4x）+2（10﹣2x）（6﹣2x）=4x2﹣48x+120=4（x﹣6）2﹣24，∵对称轴为x=6，开口向上，∴当0＜x≤2.5时，w随x的增大而减小，∴当x=2.5时，w有最小值，最小值为25元，答：当裁掉边长为2.5dm的正方形时，总费用最低，最低费用为25元．考点：1、二次函数的应用；2、一元二次方程的应用24．（1）18；（2）12【解析】【分析】（1）用树状图分3次实验列举出所有情况，再看3辆车都选择A通道通过的情况数占总情况数的多少即可；（2）由（1）可知所有可能的结果数目，再看至少有两辆汽车选择B通道通过的情况数占总情况数的多少即可．【详解】解：（1）画树状图得：共8种情况，甲、乙、丙三辆车都选择A通道通过的情况数有1种，所以都选择A通道通过的概率为18，故答案为：18；（2）∵共有8种等可能的情况，其中至少有两辆汽车选择B通道通过的有4种情况，∴至少有两辆汽车选择B通道通过的概率为41 82 ．【点睛】考查了概率的求法；用到的知识点为：概率=所求情况数与总情况数之比；得到所求的情况数是解决本题的关键．25．（1）证明见解析（2）【解析】【分析】（1）如图，连接OA；证明∠OAP=90°，即可解决问题．（2）如图，作辅助线；求出OM=1，OA=2；求出△AOB、扇形AOB的面积，即可解决问题．【详解】如图，连接OA；，；而，；而，；，，是的切线．如图，过点O作，则，，，，；，，图中阴影部分的面积．【点睛】本题考查了切线的判定与扇形面积的计算，解题的关键是熟练的掌握切线的判定与扇形面积公式.。

中考第一次适应性训练英语试卷第一卷客观题(共50分)一、单项填空在A、B、C、D四个选项中，选出可以填入空白处的最佳选项(本大题共14分，每小题1分)1. —Jim took _______ one-hour ride just now. What a short time he spent finishing such a long way!—He is _________ experienced rider.A. an; theB. a; anC. a; theD. an; a2. ---__________ it is from our own planet Earth to Mars!--- Yes, it takes months to travel to Mars by spacecraft.A. How soonB. How farC. How longD. How often3. Jerry is always so busy that he can hardly __________ a few minutes to talk with his child.A. spareB. shareC. spendD. save4. Driving in rush hour traffic __________ be very dangerous, so you __________ be too careful.A. should; ought toB. could; shouldC. might; mustn’tD. can; can’t5. You can’t believe how terrible the fire is __________ you see it with your own eyes.A. thoughB. becauseC. unlessD. since6. About _______ of the workers in the factory were born in the _______.A. two thirds; 1970B. two thirds; 1970sC. two third; 1970D. two third; 1970s7. Nowadays, many people prefer ________ to the countryside ________ the fresh air.A. to move; to breathingB. moving; to breathingC. to move; to breatheD. moving; to breathe8. --- How was your job interview yesterday?--- Oh, I couldn’t feel __________. I could hardly answer most of the questions they asked.A. betterB. easierC. worseD. happier9. --- Look! What a mess it is in your room!--- Sorry. I’ll __________ my school things and tidy it right now.A. put upB. put awayC. put outD. put off10. ---Did you enjoy the match?---Oh, no. When I got there, the match _______ for a quarter.A. has been overB. had endedC. had been overD. has ended11.Would you please tell me_____________________ ?A.when did he come homeB.where he would play footballC.if he had seen the filmD.why he didn’t watch the game12. Elvis Presley was famous _______ the king of rock and roll while Bruce Lee was famous _______ hiskung fu.A. for; forB. as; asC. for; asD. as; for13. The time he has devoted in the past years __________ the disabled is now consideredto be __________ great value __________ him.A. to help; of; forB. to helping; /; toC. to help; in; ofD. to helping; of; to14. --- Bill, can I get you anything to drink?--- __________.A. You are welcomeB. No problemC. I wouldn’t mind a coffeeD. It doesn’t matter.二、完形填空先通读下面的短文，掌握其大意，然后从下面四个答案中选择可以填入相应空白处的最佳答案（本大题共10分，每小题1分）Time flies so quickly! We become mature(成熟的)girls or boys, or at least we 15 we are. At the same time, our parents are no longer young.They 16 all they have to us but never look forward to getting 17 back. When we are ill in bed, they stay with us day and night. When we’re hungry or cold or sad, they 18 offer help.But what have we done for our parents? 19 we grow up, we have our own ideas and we believe we are 20 enough to think and act by ourselves, so we usually dislike their care. __21__, we don’t listen to them; sometimes even quarrel with them!We must 22 something now, letting them know that we love them too. Try our best to understand our parents, and not to make them feel hopeless. In a word, make it a duty to bring__23_ to them because that’s the sign that we are really mature.Children are parents’24 and we are carrying both our dreams and theirs. The pleasure of our parents is what we should try to achieve!15. A. think B. advise C. talk D. explain16. A. pass B. give C. show D. take17. A. something B. everything C. anything D. nothing18. A. never B. hardly C. seldom D. always19. A. If B. Before C. As D. Though20. A. careful B. old C. young D. patient21. A. At first B. As a result C. So far D. At once22. A. throw B. ask C. read D. do23. A. stress B. money C. happiness D. complaint24. A. hope B. award C. task D. aim三、阅读理解阅读下面短文，根据短文内容选择最佳答案（本大题共26分，每小题2分）AOne of the things to be learnt in a foreign language is guessing all the time what kind of thing to come when listening to someone talking. People do this all the time in their own language, so it is necessary to do this in a foreign language, too. Here are some examples.◆“What’s the matter?”“I went to a party last night, so I…”◆“I feel so tired these days.”“I think you’d better…”◆“Of course, she never stops talking. She is one of the most…”You can see from the above three examples that the context(上下文)helps a lot in understanding what is being talked about. So “guessing” is very important in understanding English, especially spoken English.( ) 25. This passage tells us mainly about _______.A. the importance of “guessing” in learning a foreign languageB. how to guess what one is going to talk aboutC. some examples of right guessingD. how important it is to guess all the time( ) 26. Which of the following best finishes the sentence in EXAMPLE 3?A. She is one of the most famous film stars.B. She is one of the most beautiful women.C. She is one of the most famous speakers.D. She is one of the most talkative women.( ) 27. From the passage we can infer(推断)that guessing is _______ in learning a foreign language.A. the only wayB. more important in spoken English than in written EnglishC. more important than any other wayD. more important in written English than in spoken EnglishBA few minutes before six o’clock, Mr. Smith decided to leave. He was about to start the car when a gunman jumped up from the back seat. He held a gun to Mr. Smith’s head. “Drive me to Paris!”he shouted.“All right”, Mr. Smith answered. He started the engine, pulled away from the side of the street and drove down. Being eighty-one years old, he knew he could not fight the gunman. He knew he needed help. Where were the police? As he drove through a crossing, he looked up and down the side streets, hoping to meet a police car. But he could see nothing. “Just my luck,” he thought, “If I was driving too fast, there would be a police car on every corner.”Suddenly he pushed his foot down on the accelerator(油门), and the car ran much faster. “What are you doing?”shouted the gunman. “Keeping off the police,”Mr. Smith answered. “I thought I saw a police car back there.”He ran lights, drove the wrong way on one-way streets. On two-way streets he drove on the wrong side of th e road. Not one policeman saw him. Again Mr. Smith’s plan was not working. He had to try a new plan. He turned a corner and saw the police station in front. Then he drove his car as fast as he could towards the police gate. The car hit a police motorbike down and stopped. Mr. Smith shouted, “Help! Help!” Then he reached back to grab(夺) the man’s gun. At the same time the policeman heard the noiseand quickly caught the gunman.28. Why did Mr. Smith drive much faster suddenly?A. Because he wanted to keep off the police.B. Because he saw a police car behind his.C. Because his plan was working.D. Because he wanted the police to see him.29. Which of the following is not TRUE?A. Mr. Smith ran lights, drove the wrong way on one-way streets.B. Mr. Smith knew he didn’t need any help.C. Mr. Smith drove his car as fast as he could towards the police gate.D. Mr. Smith looked up and down the side street, hoping to meet a police car.30. From the passage, what can we infer(推测)?A. Mr. Smith is a strong man.B. Mr. Smith is a shy man.C. Mr. Smith is a wise man.D. Mr. Smith is a stupid man.CWe don’t know how different our future will be in the future. We can only try to imagine it.At first we think about human relationship. In the year 2050, we will use computers almost every day we w ill be making new friends through the Internet—even our husbands or wives will be met in this way. It will be much faster and easier for us. On the other hand, our relationships with people won’t be as important as they are today—we will feel a little lonely.Computers will also help us in many other activities in 2050. For example, they will be used by the children at school to make their learning easier. In addition, there will be much more other machines which will play a similar role as computers, like r obots which will do the homework for us.Spending holidays will also be completely different. Traveling to other planets or to the moon will be available for everyone. Means(方式) of transport will, of course, change, too. We will be using solar-powered cars, which will be much cleaner.We could expect that the faster technological progress would lead to a more polluted environment. But it isn’t true. We will pay more attention to protecting the environment. And, scientists will probably find cures for many dangerous diseases, like cancer or AI DS. Therefore, our surroundings as well as health will be in better condition.Although we can’t predict(预测) the exact changes which will be made in the world, we often think about them. We worry about our and our children’s future; we have expectations, hopes as well as fears. But I think we should be rather sanguine(乐观的) about our future. We should be happy and believe good things will happen.31. Why will people probably feel a little lonely in 2050?A. Because the number of people will become much smaller．B. Because there will be less face-to-face communicationC. Because people won’t like making friends with each otherD. Because people won’t communicate with each other much often．32. According to the passage, which of the following will happen in 2050?A. The relationship between people will be more important than today.B. The way of spending holidays will be the same as that of today.C. It won’t be difficult for people to travel to other planets.D. Our environment will be much more polluted with a growing number of cars.33. What does the passage mainly talk about?A. How people will communicate in the year 2050.B. What our life will be like in the year 2050.C. How people will travel and spend their holidays in the year 2050.D. Wha t high technology will appear in the year 2050.DYou are probably familiar with the saying：An apple a day keeps the doctor away. A recent research carried out by the Chinese University of Hong Kong may change the saying:An apple a day may keep aging away.The research chose fruit flies(果蝇), as they share many genes(基因)with humans. The fruit flies were either fed normally or had an apple extract(浓缩物) added to their diet.It turned out that those fruit flies that were given apple extract lived about 55 days—five days longer than the flies that were normally fed. The research group also found it easier for the flies to walk，climb and move about as they aged.According to the result, the researchers believed that the antioxidants(抗氧化剂) in the appleextract helped clean up dangerous chemicals(化学物质) that cause illnesses，as well as aging.In another study，researchers examined diets of thousands of women. They discovered that those who regularly ate apples were 20 percent less likely to suffer heart illnesses and stroke.The apples’ genetic code(遗传密码) was discovered recently. It allows scientists to develop nicer and healthier fruits. Resear chers are already using the information to grow a kind of apples full of antioxidants that can keep eyes and joints healthy and protect humans against heart illnesses and cancer.Apples that kill the desire(欲望) to eat could also be produced, with the first“extra-healthy’’apples on supermarket shelves within just four or five years.The team that keeps studying apple DNA includes 100 scientists from five countries. Their research also suggests that around 65 million years ago, when dinosaurs began to die off the plant，which would finally become today’s apple tree, experienced a great genetic change. The number of many of its genes doubled. The extra genes allowed the apple to get used to worse conditions and go through a different development from peaches，strawberries and other related fruits.34．Why were fruit flies used for the research?A. Because they have a similar diet to humans.B. Because they have a history as long as apples.C. Because they share a lot of genes with humans.D. Because they feed on nothing but apple extract.35．What result did the researchers find out?A. Apples produce chemicals that can change hu man genes.B. Apples have antioxidants that kill chemicals that cause aging.C. Apples are rich in vitamins that are needed in humans’ bodies.D. Apples produce chemicals that make apples taste more delicious.36．What happened to apples around 65 million years ago according to the research?A. Their genes stopped their development as the environment got worse.B. Their genes became twice in number but they finally died off like dinosaurs.C. They experienced a great genetic change making them get used to worse conditions.D. They went through a similar development to peaches, strawberries and other related fruits. 37．What can we infer(推断)from the passage?A. Eating apples may bring us more advantages than we might believe before.B. People who have the habit of eating apples don’t need to see a doctor.C. Apples that kill the desire to eat are already available in supermarkets now.D. People will eat apples instead of peaches and strawberries from now on.第二卷（非选择题，共40分）四、词汇运用根据所给单词或所给中文写出单词的正确形式(本大题共8分，每小题1分)1. There are some people who have ________________ (固定的) ideas about things.2. The bicycle is _________ (超过) repair. It is too badly destroyed to repair.3. My teacher is a kind man of medium _______________ (高度).4. The boy never _________ (表达) himself well when he was in school, but now he does.5. He showed his _________________ (able) in drawing when he was quite young.6. We didn’t find the virus, because it is _______________ (tiny) than dust.7. I have to agree what you guessed is _______________ right. (possible)8. 1. Mary liked that film _______________ of all because there was nothing interestingin it. (little)五、动词填空用括号内所给动词的适当形式填空。

一、选择填空( ) 1. —I’d like you to tell me something about Beijing.—I’m sorry, but neither Helen nor I _________ there.A. have beenB. has beenC. have goneD. has gone( ) 2. _______ of his parents is in good health, but ______ of them work hard.A. None; allB. Neither; bothC. Neither; eitherD. Both; neither( ) 3. We’re going to Hangzhou by bus. You can come with us _______ you can meet us there later.A. butB. soC. andD. or( ) 4. — How does your brother like the sweaters?—_______ this sweater ________ that one are suitable for him. He likes them.A. Either; orB. Not only; but alsoC. Both; andD. Neither; nor( ) 5. My mother is _________ to listen to my long story.A. patient enoughB. too patientC. enough patientD. impatient enough( ) 6. —It’s every body’s duty to join in the Clean Your Pate Campaign.—Sure. We should try to ________ all the food that we’ve ordered.A. give upB. eat upC. show upD. turn up( ) 7. The man is creative enough________ so many nice toys for his daughter.A. buyingB. makingC. to buyD. to make( ) 8. — Why did you vote for Sally?— Because she is very ________ and she never shows off.A. curiousB. modestC. practicalD. proud( ) 9. Scientists are trying to ________ new ways to treat the terrible disease called H7 N9.A. talk aboutB. give upC. come up withD. look forward to( ) 10. —It’s necessary for you to take one hour’s exercise every day.— I agree ________ you.A. toB. onC. withD. about( ) 11. ________ Simon _______ Kitty speaks good Chinese, so they can talk with each other in Chinese.A. Neither; norB. Not only; but alsoC. Both; andD. Either; or( ) 12. — Sally, you wear a new dress today.— It fits me well, _______ the colour is not my favourite.A. andB. butC. soD. or( ) 13. Mr Li is a kind teacher. He devotes most of his time _______ us with our lessons.A. to helpB. to helpingC. helpD. helping( ) 14. — You have never been to Beijing before, have you?— ________, I have.A. First of allB. As a resultC. In factD. By the way( ) 15. I can buy ________ the book ________ the dictionary because I don’t have en ough money for both.A. both; andB. not only; but alsoC. either; orD. neither; nor二、完形填空The ancient people of Babylon and Egypt ____1____ the stars in the sky and created the zodiac (黄道十二宫图)____2___ years ago. At first it ___3____ count time. Later, many people used the stars to describe aperson’s ____4___ and to foretell (预言) what would happen in the future.A person’s zodiacal sign ____5___ his or her birth ____6____. Some believe this sign can tell us about a person’s character. For example, some think that a person ____7___ under the sign of Cancer (between June 22 and July 22) is kind and ____8___ .In many ____9___ in Asia, people believe the Chinese horoscope (星象) can describe character and foretell future events. In the Chinese horos cope, there are ___10____ animals. A person’s animal sign is connected to his or her birth ___11___. Each animal has a different type of character. People born in the Year of the Rat are friendly and careful. Those born in the Year of the Monkey are smart and ____12___ at making money.In Asia, a person’s blood type is also used to describe character. People ___13____ the blood type A are calm and serious, but they may be selfish. People with the blood type B are independent but may be lazy. People with the blood type AB ___14___ honest, and people with the blood type O are talkative (健谈的).Not everybody believes that star signs or blood types can describe character. But reading the horoscope can still be a lot of ____15____.( ) 1. A. study B. studied C. learned D. learn( ) 2. A. thousand of B. thousand C. thousands of D. thousands( ) 3. A. is used to B. was used for C. used to D. was used to( ) 4. A. name B. character C. age D. hobby( ) 5. A. is connected to B. connects to C. connected to D. was connected to( ) 6. A. place B. year C. date D. time( ) 7. A. was born B. were born C. is born D. born( ) 8. A. selfish B. home-loving C. silly D. disloyal( ) 9. A. countries B. cities C. towns D. schools( ) 10. A. ten B. eleven C. twelve D. thirteen( ) 11. A. week B. day C. month D. year( ) 12. A. bad B. good C. common D. little( ) 13. A. with B. within C. has D. have( ) 14. A. are B. is C. was D. were( ) 15. A. funny B. fun C. funs D. interest三、阅读理解(A)We know people of different star signs have different personalities. I read an article about the personalities of the 12 star signs, and found I liked two of them best. They are Capricorn and Aquarius. These are what I copy from the article. Read them and see if you like them!CapricornDecember 22 to January 19Capricornians are serious persons. You often work very hard and can be very sensitive (敏感的). For these reasons, you can do well in business. But you must learn not to worry about little things. You won’t marry very early because you are worried bout marrying a wrong person. But when you get married, you will be happy all your lives.AquariusJanuary 20 to February 18You are the happiest when you are needed by others and when you are successful. You want to get freedom and equality, and you will try your best to gain them. You also want to make it possible for all people to know the good things of life. You may choose a career (事业) in which you can help others or make others have better lives. You like to study philosophical religion (宗教哲学). You are an idealist (理想主义者) with beautiful dreams, but you can get happiness from the dreams only when you can make them come true. When friends share your interests and have a good discussion with you, you will be in a good mood. Creative work makes you happy.( ) 1. The introductions to the two star signs are from _______.A. a picture bookB. a diaryC. a cartoon bookD. an article( ) 2. According to the article, Aquarians are likely to become ________.A. businessmenB. actors or actressesC. doctorsD. pop stars( ) 3. Capricornians won’t marry early because _______.A. they want to live with their parentsB. they are serious, hard-working and sensitiveC. they don’t want to marry a wrong personD. they like living alone( ) 4. Judging from their birthdays, ________ is more likely to be a good businessman.A. David (March 10th).B. Amy (January 15th).C. Neil (July 25th).D. Peter (December 18th).( ) 5. Which of the following is NOT true?A. Aquarians like dreaming.B. Aquarians like creative work.C. Capricornians never worry too much.D. People of different star signs have different personalities.( B )When you’re curious about something, and want to know more about it, you can use the way of asking questions. Asking questions is the first step to make discoveries and find interesting answers. The steps below can guide you during the research.Step 1 On a note card or a piece of paper, write down the subject that you are interested in. Just get the main idea down. For example, you might write:Discover more about dinosaurs.Step 2 Next, stop and think for a moment about what you already know about your subject. List what you already know like the sentence below:(1) Dinosaurs lived long before human begins appeared.(2) Dinosaurs lived on the earth for more than 150 million years.(3) Some dinosaurs fed on plants, some on meat.Step 3 What can you do with what you want to learn? By asking questions. On your paper, start writing down questions about the dinosaurs as you think of them:(1) What’s the best weather for dinosaurs to live in?(2) How many kinds of dinosaurs are there?(3) Have dinosaurs really disappeared?Step 4 Armed with your list of questions, you can now go to the nearest library or computer to begin your research. As you learn more about your subject, you’ll probably discover some new questi ons. For example, you might discover that dinosaurs disappeared about 65 million years ago. Why? What happened? Asking new questions can help you research your subject more widely.The next time you find something interesting to research, take time to organize your thinking by asking good questions. And remember learning more always brings more questions.( ) 6. When you do some research, you should take the following steps:① list what you want to know② choose a research subject③ list what you alr eady know ④ discover new problemsA. ④③①②B. ①④③②C. ②③①④D. ③②④①( ) 7. From the passage, we know_______.A. dinosaurs appeared after human beingsB. not all the dinosaurs fed on meatC. dinosaurs lived on the earth for 65 million yearsD. dinosaurs liked warm seasons( ) 8. What does “Armed with your list of questions” mean?A. Putting your list of questions under your armB. Discussing your questions with y our classmateC. Writing down your list of questionsD. Taking your list of questions with you( ) 9. According to the passage, which one is true? _____A. You can find all the answers onlineB. Learn more, and you 11 have no questionsC. Asking questions is the only way for researchD. During the research, you may keep finding new questions( ) 10. The best title (标题) for this passage is “______”.A. Discovering DinosaursB. Asking Good QuestionsC. Finding SubjectD. Learning Steps( C )Here is how one new teacher made friends with the girls and boys in her class on the first day of school. As the bell rang, the teacher smiled at each girl and boy. Then she said in a quiet voice, “Good morning. How nice it is to have all of you in my class this year. I’d like to know each of you. I am sure we will enjoy working together. ” Everyone felt that she meant what she said because of her sweet voice and her friendly look.She told the girls and boys her name and wrote it on the blackboard. Then she told them some of the things she liked to do and she was hoping to do with them during the yearThen she said to the class, “Now you know me and the things I like and I want to know your names and the things you like. Then I will feel that I know you. ”Could you make friends by doing the same as this teacher did?One way of getting to know girls and boys in your class is to find out more about them. It is often to be friends with those people who have the same hobbies with you. You play the same games and go on journeys together.You may find that some new comers in your class mi ss their old friends and feel strange and alone. You can invite them to take a walk or to ride bikes with you. You will find many things in common to talk about. Just talking together in a friendly manner is one good way to make friends.( ) 11. How do you understand the saying “If you want a friend, be one” ?A. If you want to have a friend, try to make one be your friend.B. You can make friends by doing what a friend should do.C. You may have a friend by doing everything for him.D. When you need a friend, you have to be a friend of yourself.( ) 12. The teacher’s sweet voice and her friendly look _______.A. showed that she would like to he a friend of the girls and boysB. made every girl and boy happyC. told the girls and boys everything about herselfD. meant she wanted to tell the boys and girls something interesting( ) 13. A new comer will be your friend if _______.A. he always thinks of his old friendsB. you ask him to do somethingC. he knows you very wellD. you talk with him in a friendly way( ) 14. If you want to make friends with others, what of the following shouldn’t you do?A. You learn more about them.B. You talk with them in a friendly way.C. You have different hobbies with them.D. You try to be the same to them.( ) 15. Which is the best title of the passage?A. How to Make Friends with the StudentsB. What a Good TeacherC. Teachers and StudentsD. A Story about a New Teacher四、词汇A. 根据汉语提示、英文释义和句意，写出所缺单词。

初三年级阶段性测试英语模拟试题第一卷（选择题，共50分）一、单项填空在A、B、C、D四个选项中, 选出可以填入空白处的最佳选项。

(本大题共14分，每小题1分)1. －Do you like _________ film we saw yesterday?－Certainly. I’ve never seen _________ better one before.A. a; aB. the; aC. a; theD. the; the2. －Plenty of latest news and information are often covered live on CCTV-1.－That’s true. ________important news channel CCTV-1 is!A. What anB. WhatC. What aD. How3. They’re ________ easy problems that ________ many students can solve them.A. so; soB. so; suchC. such; suchD. such; so4. －What did you do yesterday?－My brother took two friends of _____ to play chess with us. But I don’t know _____ of them.A. his; allB. him; bothC. his; eitherD. him; neither5. Your shoes under the bed _________ bad. Put them in the sun, please.A. are smelt terribleB. smell terribleC. smell terriblyD. are smelt terribly6. －Is the girl your cousin?－It _______ her. She _________ Hong Kong for a short stay.A. can’t be; has gone toB. mustn’t be; has been inC. can’t be; has been toD. should be; has gone in7. I really enjoyed your lecture, ______ there were some parts I didn’t quite understand.A. becauseB. unlessC. thoughD. after8. Luckily, the family arrived_______ the hotel _______ a cold evening.A. in; inB. in; onC. at; onD. at; in9. －People now can know what is happening in the world quickly.－You are right. With the help of the computers, news can _____ every corner of the world.A. getB. arriveC. returnD. reach10. －Do you know the lady ________ in red?－I know her no matter what she _______.A. worn; wearsB. putting on; dressesC. dressed; wearsD. wears; dresses11. －What did the doctor ask?—He asked how long _________.A. has our daughter caught a coldB. had our daughter caught a coldC. our daughter had caught a coldD. our daughter had had a cold12. －How about Mary?－She ________.A. has married for two yearsB. marries wellC. married with a rich manD. is going to marry to Billy13. —Where’s your father?—He’s gone to Beijing. And he’ll be back______ next month.A. sometimesB. some timesC. some timeD. sometime14. －Excuse me. Do you have a table for two?－I’m sorry, _______ there aren’t any seats now. Would you mind _______ for a while?A. but; waitingB. and; waitC. or; waitedD. but; to wait二、完形填空先通读下面的短文，掌握其大意，然后从下面四个答案中选择可以填入相应空白处的最佳答案。

初三上期末模拟一、词汇运用1. Whenever someone asks him what personal ____________ (develop) is, he always has a lot to say.2. People in Palestine and Israel are all looking forward to living a ____________ (peace) life.3. That young boy was brave enough to stop a thief ____________ (steal) an iPhone 6S ou the bus.4. The war will never come to an end if they don’t ____________ (succeed) drive away the enemies.5.My ____________ (自豪) moment came when I finished my first marathon this September.6. “I tried everything I can do to get my little daughter to ____________ (安全),” cried the young mother.7. The government wants to have a better environment by ____________ (关闭) down more than 50 factories.8. Who do you think is the 10 most ____________ (高) paid athletes in the world?二、单项选择1. She is ______ new comer to ______ chemistry, but she has already made some important discoveries.A. the; theB. the; /C. a; /D. a; the2. You don’t look quite ______ today. Can you tell me what’s the matter?A.youB. yoursC. yourD. yourself3. Just ______ the saying goes, “It”s never too old to learn,” Carl Marx began to learn English in his ______.A. like; fiftiesB. as; fiftiethC. as; fiftiesD. like; fiftieth4. --They have little time to do after-school activities, ______?--______. They are all busy preparing for the exam.A. do they; YesB. do they; NoC. don’t they; YesD. don’t they; No5. Mr. Collins has just arrived, but I didn’t know he ______ until yesterday.A. was comingB. has comeC. will comeD. came6. There is no doubt that China’s population will get ______ because of the two-child policy.A. moreB. biggerC. bigD. many7. --Excuse me, but could you tell me ______?--Sorry, I don’t know. I’m new here, too.A. which was the way to the nearest shopping mallB. how long the Grand Theatre opensC. where to enjoy the natural beautyD. how do the local people celebrate Christmas8.Silk scarves feel ______, and they sell ______.A. smooth; goB. smoothly; goodC. smoothly; wellD. smooth; well9. I stood at the seaside, and watched the sun ______ in the east.A. raisingB. risingC. risesD. raises10.--Are you going to Sam’s birthday party this Saturday?--I’m not sure. I’ll go with you if I ______.A. am invitedB. will be invitedC. will inviteD. invite11. The robot can help me sweep the floor. ______ mart invention it is!A. WhatB. What aC. How aD. How12. Drivers are required ______ more carefully ______ foggy days.A. driving; onB. driving; inC. to drive; inD. to drive; on13.--Nowadays WeChat is very popular among friends.--Yes. It seems to be the best way of communication ______ people like.A. thatB. whichC. whatD. who14.--Vivian, I’d like to have your opinions about my project.--______. But I have one suggestion.A. That’s a good ideaB. I agree with youC. It looks fine to meD. Check it first三、动词填空1. --I heard lots of noise from you, Jim.--Sorry, Miss Zhao. I ____________ (discuss) with them about the project.2. I feel energetic again because I ____________ (have) a good rest. I think I can devote myself to the worknow.3. She has no idea which friend to turn to ____________ (borrow) some money.4. The Party leader ____________ (not be) able to win people’s trust unless he comes to people with cleanhands.5.Jim as well as his two brothers ____________ (choose) to perform on this year’s Spring Festival Gala theother day.6. Because of high house prices, many people would rather ____________ (rent) a house than buy one of theirown.7. More attention should be paid to ____________ (improve) the spiritual life of people in poor areas.8. A good medicine tastes bitter. ____________ (trust) those who advise you sincerely, and you will be a betterman.四、完成句子1.事实证明，可能不止一个人与这桩绑架案有关。

大桥实验中学9A U1单元练习卷一、词汇1. Hey, cheer up! doesn't make any differences, (sad)2.Make sure the Wifi the computer with the Internet works well (connect )3. A miss is as a mile. Mistakes because of will lead to serious problems(care)4.After being into several groups, the students began to do experiments carefully(分)5.The long waiting hours outside the school gate make the school the parents (急躁）KEY：Sadness；connecting ；carelessness ；divided ；impatient二、单项选择1. Guilin is_______ attractive city. I have never been to ______more beautiful one.A. an; theB. a; aC. a; theD. an; a2. The town is no longer _______now because nearly half of it _______burned by the big fire.A. lively; wasB. alive; wasC. living; wereD. alive; were3.－It is said not only Mr. Brown but also his children _______Chinese when living in China?－I guess that is ______ they often practice Chinese with their Chinese teacher.A. speak; becauseB. speaks; becauseC. speak; whyD. speaks; why4. Humans are slowly polluting the whole world and there is not enough clean air ________water. We must take action, _______ things will be worse.A. and; andB. or; andC. and; orD. or; or5. It is important _______us to recommend an honest man ________our new president.A. for; forB. of; asC. for; to beD. of; to be6. The boy is always absent ________ school, though he is required _______every day.A. from; attendingB. for; to attendC. from; to attendD. for, attending7. --Do you believe house prices will drop in the following month?--It's hard to say. The public are still not surethe government has made up its mind to do so.A.if, thatB. whether, ifC. that; that D that; whether8. I took too many pills last night, so I feel too to keep working.A.asleep; sleepy B, sleeping; asleep C. sleeping,sleepy D. sleepy; sleepy9. We think that more attention should be paidthe air around us.A. to improveB. to to improveC.to improvingD. to to improving10.I want to knowA. how long has your uncle marriedB.how long it is since your uncle got marriedC.how long your uncle had been marriedD.how long your uncle has married11. it is to stay at home and watch TV in weather!A.How great fun; such a terribleB. What great fun; such terribleC.What a great fun,such terribleD.How a great fun,so terrible a12.Do you think the book is worth reading? --Yes, .A.It’s can’t be worseB.It can’t be praised too much.C.I nearly fell asleep when sleepingD.It is as good as a disasterKEY：DAADCC DCCBBB三、动词填空1. ---Did the couple appear at your birthday party yesterday?---No. Because they at their relative's wedding. (attend)2. --Turn off the TV, dear! Baby is sleeping.--There is no need. He up.(wake)3. I don't know what we should devote ourselves to the pollution. (reduce)4. What a great surprise! The father didn’t t expect that his son him a card as Father's Day gift.(mak e)5. No one else was seen call in the phone but except him at 9 last night. (answer)6. on the grass for a while and soon you will have a new idea about that. (lie)KEY：were attending；has woken；to reduce；would make ；answering ；Lie四、中译英:1.朋友有难，我们无论怎么帮忙都算不了什么。

2020-2021学年江苏省无锡市大桥实验中学月考9A U1-2一、单项填空1. ---Do you know ________ man talking with our headmaster?---He is a friend of________.A. the, meB. the, mineC. a, meD. a, mine2. ---Shall we meet at the station at 8 a.m.?---l am afraid we_________. The train leaves at 10 a.m.A. mustn’tB. can'tC. needn'tD. shouldn’t3. ---Do you know________?---All of them _________ the museum.A. where are the students; have gone toB. where are the students; have been toC. where the students are; have gone toD. where the students are; have been to4._________ are crazy about listening to pop music in their spare time.A. Bill as well as Dick and LucyB. Neither Victor nor TomC. Not only Tim but also the twinsD. Either Anita or Jack5. --- Mr. Wu, could you tell me ____________?---You'd better do more speaking.A.how I can improve my EnglishB. which way can I chooseC.how I do with my EnglishD. what’s the matter with my English6.---Chocolate isn't good for your teeth.---____________________________.A. Yes, I really agreeB. No, I really agreeC. No, I think soD. Yes, I think so7.---Linda didn't invite us to her party.---_____________________? I don’t care.A. So whatB. What's onC. For whatD. What's up8.---Shall we stop for lunch_________ shall we drive on?---Let's stop for lunch, but the driver can't drink ________ drive.A. and; andB. or; andC. or; orD. and; or9.The time he has devoted in the past few years __________the disabled is now considered to be ______great value _______him.A. to help; of; forB.to helping; /; toC.to help; in; ofD.to helping; of, to10.---Was it under the tree _________ you were talking to a friend?---Yeap. But when I got back there, my bike was gone.A.thatB. whereC. whichD. while11.---Are you sure you don't mind if I ask you to look after my dog while I ________ here?---___________________________.A. leave; Yes, of courseB.am away from; Yes, of courseC. leave; No, of course notD.am away from; No, of course not12. ---1dislike music that I can't sing along with.---Me, _______.A. norB. tooC. eitherD. neither13. In the examination paper Question 2 is a________. I am sure nobody will make a mistake in it.A. difficultyB. matterC. giftD. pity14. ---Will you go to the park tomorrow?---If you don't. ___________.A.so do IB. so will IC. neither do ID. neither shall I15. ---How do you find this film?---__________________________. It goes a little slowly, though.A. On the InternetB. As advisedC. Not too badD. Guess答案：BCCCA DABDB BBCDC二、完形填空There are robots all around us, __1___ our lives easier. Some of them, like the calculator, work more quickly than human beings ___2___ . And they never make mistakes . They never get bored with doing the same job over and over again . ___3__, they never get tired . In some ways robots are better than people。

2020-2021学年度第一学期初三物理期中测试卷2020年11月班级__________ 姓名__________一、选择题（本题共12小题，每小题2分，共24分。

各小题均只有一个正确选项）1.如图，是生活中经常使用的工具，其中属于费力杠杆的是（）2.下列数据符合实际的是（）A．家用日光灯工作时的电流约为1AB．小明同学从地上拾起一个鸡蛋举过头顶，对鸡蛋做的功大约是1 JC．某新型轿车汽油机的效率约为99%D．人以正常速度骑自行车的功率为1kw3.如图所示，用一根绳子绕过定滑轮，一端拴在钩码上，手执另一端，分别用力F1、F2、F3匀速拉起钩码。

忽略绳重与摩擦，下列说法中正确的是（）A．F1较大B．F2较大C．F3较大D．F1、F2、F3一样大4.如图所示的四种情形中，对力是否做功判断正确的是（）A．甲图中人提着滑板在平直的道路上匀速行走，人对滑板做了功B．乙图中人推着货车在平直的道路上匀速行走，人对货车做了功C．丙图中人用力搬石头但石头未被搬动，人对石头做了功D．丁图中足球离开脚后继续在空中飞行的过程中，人对足球做了功5.关于内能、温度和热量，下列说法正确的是（）A．物体吸收热量，温度一定升高B．一个物体内能增加了，一定是吸收了热量C．一碗水倒掉一半后，内能变小D．物体的温度越高，所含有的热量就越多6.2020年1月25日到2020年2月2日，从相关方案的设计完成，到正式投入使用，仅用了8天时间就建成的武汉火神山医院，彰显的不仅是中国速度，更是战胜疫情的坚强决心。

如图所示，为了在最短的时间完成地面基础建设，上百台挖掘机同时工作，其目的是增大所有挖掘机总的（）A．机械效率B．功C．功率D．有用功7.保持体温恒定有利于生物在较恶劣的环境中生存，恒温动物之所以能够保持体温恒定，其中一个重要原因是恒温动物体内水分的含量比变温动物大得多。

比如，水就大约占成人人体的70%，水之所以能够帮恒温动物不受外界环境温度影响维持恒定的体温，主要是因为水（）A．比热容大B．凝固点低C．液化时放热D．密度较大8.下列事例中，改变物体内能的途径与其他三项不同的是（）9.如图，用同一滑轮组分别将物体A和物体舍匀速提升相同的高度。

2020-2021学年度9月初三物理单元练习卷第I卷（选择题）一、单选题(每题2分，共24分）1．初中生小宇同学是个高个子，拿起两个普通鸡蛋，并用2s的时间将它匀速举过头顶，这个过程中小宇对鸡蛋做的功约为（）A．0.2J B．2J C．10J D．20J2．如图所示的各类杠杆中，属于费力杠杆的是A．起子B．道钉撬C．筷子D．钢丝钳3．国际单位制中，下列对应物理量的基本单位错误的是（）A．力——牛顿N B．压强——帕斯卡PaC．功——焦耳J D．机械效率——瓦特W4．如图所示，在均匀杠杆的A处挂3个钩码，B处挂2个钩码，杠杆恰好在水平位置平衡，所有的钩码均相同，下列判断正确的是（）A．若在A、B两处的下面各加1个钩码，那么杠杆仍然平衡B．若在A、B两处的下面各减1个钩码，那么杠杆仍然平衡C．若将A、B两处所挂的钩码都远离支点移动一格，那么杠杆仍然平衡D．若在A处的下面加3个钩码，B处的下面加2个钩码，那么杠杆仍然平衡5．关于做功，下列说法正确的是（）A．运动员举着杠铃不动时，人对杠铃的支持力做了功B ．扛着一桶纯净水上楼时，人对水桶的支持力做了功C ．拉着拉杆箱在水平地面上行走时，地面对拉杆箱的支持力做了功D ．篮球离开手后继续在空中飞行的过程中，运动员对篮球做了功 6．如图所示，图中阴影部分的面积描述相应物理量正确的是（ ）A ．物体的密度B ．物体运动的路程C ．力做功的功率 D ．物体所受的压强7．一同学从一楼跑到三楼用了10s ，他的功率可能是（ ） A ．3WB ．30WC ．300WD ．3000W8．关于功、功率和机械效率，下列说法正确的是（ ） A ．机械的功率越大，做功越多B ．机械的功率越大，做功越快C ．机械的功率越大，机械的机械效率越高D ．机械的机械效率越高，机械越省力9．甲乙两个滑轮组如图所示 ，其中的每一个滑轮都相同，用它们分别将重物G 1、G 2提高相同的高度，不计滑轮组的摩擦，下列说法中正确的是（ ） A ．若G 1 = G 2，拉力做的额外功相同 B ．若G 1 = G 2，拉力做的总功相同C ．若G 1 = G 2，甲的机 械效率大于乙的机械效率D ．用甲乙其中的任何一个滑轮组提起不同的重物，机械效率不变 10．一定质量的物体在水平拉力的作用下沿水平面运动，物体运动的s t-图像如图所示。