模块综合检测卷(二)

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2022年外研版八年级英语上册Module 2模块综合检测题

2022年外研版八年级英语上册Module 2模块综合检测题

Module 2模块综合检测(45分钟100分)第一卷(共40分)Ⅰ.听力(10分)(Ⅰ)录音中有五组对话及五个问题,听一遍后,选择最正确答案。

(5分)1. A. It’s cool. B. It’s warm. C. It’s col d.2. A. Hong Kong. B. Shanghai. C. Hong Kong and Shanghai.3. A. It is in the south of England. B. It is in the east of England.C. It is in the north of England.4. A. The Great Wall. B. The capital of China.C. The Great Hall of the People.5. A. New York. B. Washington. C. Beijing.(Ⅱ)录音中有一篇短文,听两遍后,完成句子。

(5分)6. Ji’nan lies i n the __________ of China.7. There are many old __________ in and around the city.8. You can also have __________ of delicious food in Ji’nan.9. People in Ji’nan are __________ kind and friendly.10. Welcome to Ji’nan and I’m __________ you will have a good time.Ⅱ.单项选择(10分)1. —When ______ Little Jerry ______ to school?—Three years ago.A. will; goB. did; goC. does; goD. is; going2. —That cloth is ________ the one you bought yesterday.—Yes, but it’s not nearly long enough for this table.A. as beautiful asB. so beautifully asC. more beautiful asD. as beautifully as3. The baby is too young. So he ______ speak ______ walk.A. can’t; andB. can; orC. can; andD. can’t; or4. —Do you know the population of India?—Sorry, I’m not sure.But it’s ______ than that of China.A. fewerB. lessC. smallerD. more5. Light travels ______ than sound(声音).A. much fastB. far fastC. much fasterD. more faster6. The city is about ______ from here.A. 200 kilometreB. 200 kilometresC. 200-kilometreD. 200-kilometres7. The Yangtze River is longer than ______ in China.A. any other riverB. any riverC. other riversD. any other rivers8. —Do you remember ______ the flowers?—Of course. Can’t you see I’m watering?A. waterB. to waterC. wateringD. watered9. Jeremy Lin is famous ______ playing basketball.A. toB. asC. forD. between10. The red pencil is ______ than the green one.A. shortB. shorterC. niceD. the shortestⅢ.完形填空(10分)Australia is the greatest(最大的)island in the world. It is much __1__ than China. It is in the __2__ of the Earth. So when it is __3__ summer in China, it is cold winter in Australia.Australia is big, but the population there is __4__. The population of Australia __5__ the same as(与……一样) that of Shanghai, a city in China.Australia is famous __6__ its __7__ and kangaroos. After a short drive from any town, you will find__8__in the middle of white sheep. Sheep, sheep, __9__ are sheep. Have you ever seen(你曾经见过)a kangaroo? It has a “bag〞in its body. The __10__ kangaroo keeps its baby kangaroo in the “bag〞. It is very interesting, isn’t it?1. A. smaller B. the smaller C. small D. a smaller2. A. north B. west C. south D. east3. A. warm B. hot C. cold D. cool4. A. small B. more C. much D. big5. A. am B. is C. are D. be6. A. for B. as C. about D. from7. A. horses B. cats C. bears D. sheep8. A. you B. yourself C. your D. yours9. A. there B. where C. anywhere D. everywhere10. A. girl B. son C. father D. motherⅣ.阅读理解(10分)In a map of the world you can easily find two big cities, London and New York. London is the oldest city in Britain. It’s certainly the biggest city inEurope(欧洲). New York is as big as London, and it’s the biggestcity in America. The streets in London are crowded and there is oneof the world’s biggest underground railway systems(地铁系统). Thestreets in New York are just as crowded as in London. And the NewYork subway carries more people each day than the London underground. There are a lot of big stores in these two cities. ButNew York has more supermarkets than London.In London there are many palaces(宫殿)and churches, forexample, St. Paul’s.New York isn’t as old as London,and it hasn’tgot many old buildings. But skyscrapers(摩天大楼) are much biggerthan the buildings in London.London has more parks than New York. But New York’s Central Park is much bigger than the biggest park in London.1. London is ______ New York.A. as old asB. older thanC. younger thanD. as young as2. London is the biggest city in Europe, and New York is the biggest city in ______.A. Europe, tooB. CanadaC. AustraliaD. America3. The underlined word “subway〞in British English means ______.A. busB. trainC. underground railwayD. truck4. New York has fewer palaces than London because ______.A. it is a new cityB. it has less land, tooC. New Yorkers are not interested in themD. it has little money to build them5. Which of the following is NOT true?A. London has more churches than New York.B. New York has bigger skyscrapers than the buildings in London.C. New York’s Central Park isn’t bigger than the parks in London.D. London has more parks than New York.第二卷(共60分)Ⅴ.词汇运用(10分)(Ⅰ)根据句意及首字母提示完成单词。

高中物理新教材同步必修第三册期末检测 模块综合试卷(二)

高中物理新教材同步必修第三册期末检测 模块综合试卷(二)

模块综合试卷(二)(满分:100分)一、单项选择题(本题共8小题,每小题3分,共24分)1.下列说法正确的是( )A .根据磁感应强度定义式B =F Il,磁场中某点的磁感应强度B 与F 成正比,与Il 乘积成反比B .磁感应强度的方向与小磁针N 极所受磁场力的方向相同C .一小段通电直导线在某处不受磁场力作用,则该处的磁感应强度一定为零D .磁感线总是从磁铁的N 极出发,到S 极终止答案 B解析 磁场中某点的磁感应强度是由磁场本身决定的物理量,与通电导线所受的安培力F 以及Il 乘积无关,选项A 错误;磁感应强度的方向与小磁针N 极所受磁场力的方向相同,选项B 正确;一小段通电直导线在某处不受磁场力作用,可能是导线与磁场方向平行,该处的磁感应强度不一定为零,选项C 错误;磁感线在磁体的外部从N 极到S 极,在磁体内部是从S 极到N 极,组成闭合的曲线,故D 错误.2.(2021·河北保定市高二期末)一个量程为0~15 V 的电压表,内阻为15 kΩ,把它与一个电阻R 串联后接在10 V 的恒压源上,此时电压表的读数是6 V .则电阻R 的阻值为( )A .200 ΩB .10 kΩC .20 kΩD .240 Ω答案 B解析 串联电路电压的分配与电阻成正比,则有6 V 15 kΩ=(10-6) V R,解得R =10 kΩ,故选B. 3.(2021·北京市期末)在研究电容器的充、放电实验中,把一个电容器、电流传感器、电阻、电源、单刀双掷开关按图1甲所示连接.先使开关S 与1端相连,电源向电容器充电;然后把开关S 掷向2端,电容器放电.电流传感器与计算机连接,记录这一过程中电流随时间变化的i -t 图像如图乙所示,图线1表示电容器的充电过程,图线2表示电容器的放电过程,下列选项正确的是( )图1A.电容器放电过程中流过电阻R的电流方向向右B.电容器充电过程中电源释放的电能全部转化为电容器中的电场能C.图乙中图线1与横轴所围的面积,表示电容器充电后所带电荷量的大小D.图乙中形成图线2的过程中,电容器两极板间电压降低的越来越快答案 C解析充电时电容器上极板带正电,放电时,电流由电容器的上极板流向下极板,所以流过电阻R的电流方向向左,A错误;电容器充电过程中电源释放的电能转化为电容器的电场能、电阻上的热能等,B错误;i-t图像与横轴所围的面积表示电荷量,所以图线1与横轴所围的面积表示电容器充电后所带电荷量的大小,C正确;由题图可知,放电过程中,电流的变化越来越慢,说明电压的变化也越来越慢,D错误.4.如图2所示,在两个等量异种点电荷的电场中有1、2、3、4、5、6各点,其中1、2之间的距离与2、3之间的距离相等,2、5之间的距离与2、6之间的距离相等,2位于两点电荷连线的中点,两条虚线互相垂直,那么关于各点电场强度和电势的叙述错误的是()图2A.1、3两点电势相等B.1、3两点电场强度相同C.4、5两点电势相等D.5、6两点电场强度相同答案 A5.在如图3所示的电路中,输入电压U恒为12 V,灯泡L标有“6 V12 W”字样,电动机线圈的电阻R M=0.5 Ω.若灯泡恰能正常发光且电动机转动,以下说法中正确的是()图3A.电动机的输入功率是12 WB.电动机的输出功率是12 WC.电动机的热功率是12 WD.整个电路消耗的电功率是22 W答案 A解析 电动机两端的电压U M =U -U L =(12-6) V =6 V ,整个电路中的电流I =126A =2 A ,所以电动机的输入功率P =U M I =6×2 W =12 W ,故A 正确;电动机的热功率P 热=I 2R M =22×0.5 W =2 W ,则电动机的输出功率P 2=P -P 热=(12-2) W =10 W ,故B 、C 错误;整个电路消耗的电功率P 总=UI =12×2 W =24 W ,故D 错误.6.如图4所示,真空中A 、B 、C 三点构成一等边三角形,CD 为边AB 的高.电荷量为-q (q >0)的点电荷Q 1固定在A 点.将另一电荷量为+q 的点电荷Q 2从无穷远处移到C 点,此过程中静电力做功为W ,再将点电荷Q 2从C 点移到B 点并固定.取无穷远处电势为零,则( )图4A .点电荷Q 2移入以前,B 点的电势为W qB .将点电荷Q 2从C 点移到B 点过程中,静电力做正功C .点电荷Q 2固定后,将某一正试探电荷从C 点沿CD 移到D 点,该试探电荷所受静电力逐渐增大D .点电荷Q 2固定后,将某一试探电荷从C 点沿CD 移到D 点,该试探电荷所具有的电势能先增加后减少答案 C解析 A 点的电荷为负电荷,因此,C 、B 的电势都为负,因为C 、B 到A 的距离相等,因此两点电势都为-W q,A 错误;C 、B 的电势相等,点电荷Q 2从C 点移到B 点过程中,静电力不做功,B 错误;Q 2固定后,CD 为等量异种电荷连线的中垂线,中垂线上的电场方向始终垂直于CD ,试探电荷从C 点沿CD 移到D 点,静电力不做功,试探电荷的电势能不变化,但是电场强度从C 点到D 点逐渐增大,即试探电荷所受静电力逐渐增大,D 错误,C 正确.7.两电荷量分别为q 1和q 2的点电荷固定在x 轴上的A 、B 两点,两点电荷连线上各点电势φ随坐标x 变化的关系图像如图5所示,其中P 点电势最高,且x AP <x PB ,则( )图5A .q 1和q 2都是负电荷B .q 1的电荷量大于q 2的电荷量C .在A 、B 之间将一负点电荷沿x 轴从P 点左侧移到右侧,电势能先增大后减小D .一点电荷只在电场力作用下沿x 轴从P 点运动到B 点,加速度逐渐变小答案 A解析 由题图知,越靠近两点电荷,电势越低,则q 1和q 2都是负电荷,故A 项正确;φ-x 图像的切线斜率表示电场强度,则P 点场强为零,据场强的叠加知两点电荷在P 处产生的场强等大反向,即k q 1x AP 2=k q 2x BP2,又x AP <x PB ,所以q 1的电荷量小于q 2的电荷量,故B 项错误;由题图知,在A 、B 之间沿x 轴从P 点左侧到右侧,电势先增加后减小,则负点电荷的电势能先减小后增大,故C 项错误;φ-x 图像的切线斜率表示电场强度,则沿x 轴从P 点到B点场强逐渐增大;据a =qE m可知,点电荷只在电场力作用下沿x 轴从P 点运动到B 点,加速度逐渐增大,故D 项错误.8.(2020·安徽定远重点中学高二期末)如图6所示,M 、N 和P 是以MN 为直径的半圆弧上的三点,O 为半圆弧的圆心,∠MOP =60°,在M 、N 处各有一条长直导线垂直穿过纸面,导线中通有大小相等的恒定电流,方向如图所示,这时O 点的磁感应强度大小为B 0;若将M 处长直导线移至P 处,则O 点的磁感应强度大小为( )图6A.3B 0B.32B 0 C .B 0D.12B 0 答案 B解析 依题意,每根导线在O 点产生的磁感应强度为12B 0,方向竖直向下,当将M 处长直导线移至P 处时,两根导线在O 点产生的磁场方向成60°角,则O 点合磁感应强度大小为B =2×12B 0×cos 30°=32B 0,故B 正确. 二、多项选择题(本题共4小题,每小题4分,共16分)9.电阻不变的三盏电灯A 、B 、C 连接在如图7所示的电路中,闭合开关S 后,三盏灯电功率相同,此后向上移动滑动变阻器R 的滑片,则可判断( )图7A .三盏灯的电阻大小是RB >RC >R AB .三盏灯的电阻大小是R A >R B >R CC .A 、C 两灯变亮,B 灯变暗D .A 、B 两灯变亮,C 灯变暗答案 BD解析 闭合开关S 后,A 灯的电压大于C 灯、B 灯的电压,而三灯的实际功率相等,由P =U 2R 可知:R A >R C ,R A >R B ,C 灯的电流大于B 灯的电流,它们的实际功率相等,由P =I 2R 可得:R C <R B ,则得:R A >R B >R C ,故A 错误,B 正确;当滑动变阻器R 的滑片向上移动时,滑动变阻器接入电路的电阻增大,外电阻增大,总电流减小,电源的内电压减小,路端电压增大,通过A 灯的电流增大,则A 灯变亮;由于总电流减小,而通过A 灯的电流增大,则通过C 灯的电流减小,C 灯变暗,C 灯的电压减小,而路端电压增大,则B 灯的电压增大,B 灯变亮,即A 、B 两灯变亮,C 灯变暗,故C 错误,D 正确.10.(2021·安徽省肥东县第二中学高二期末)如图8所示,d 处固定有负点电荷Q ,一个带电质点只在静电力作用下运动,射入此区域时的运动轨迹为图中曲线abc ,b 点是曲线上离点电荷Q 最远的点,a 、b 、c 、d 恰好是一正方形的四个顶点,则有( )图8A .a 、b 、c 三点处电势高低关系是φa =φc >φbB .质点由a 到b ,电势能增加C .质点在a 、b 、c 三点处的加速度大小之比为2∶1∶2D .质点在b 点电势能最小答案 BC解析 根据负点电荷的等势面的分布可知离负点电荷越近的电势越低,以点电荷为圆心的同一圆周上的电势相等,则a 、b 、c 三点处电势高低关系是φa =φc <φb ,A 错误;根据曲线运动合外力总是指向运动轨迹的凹侧,所以质点由a 到b ,静电力做负功,则电势能增加,质点在b 点电势能最大,B 正确,D 错误;由库仑定律可得k q 1q 2r2=ma ,由上式可知加速度a 与r 2成反比,又由几何关系可得r a ∶r b ∶r c =1∶2∶1,则有r a 2∶r b 2∶r c 2=1∶2∶1,所以质点在a 、b 、c 三点处的加速度大小之比为2∶1∶2,C 正确.11.如图9甲所示是有两个量程的电流表,当使用a 、b 两个端点时,量程为0~1 A ,当使用a 、c 两个端点时,量程为0~0.1 A ,已知电流表的内阻R g1=200 Ω,满偏电流I g1=2 mA ;如图乙所示是有两个量程的电压表,当使用d 、e 两个端点时,量程为0~10 V ,当使用d 、f 两个端点时,量程为0~100 V .已知电流表的内阻R g2=500 Ω,满偏电流I g2=1 mA ,则电阻R 1、R 2、R 3、R 4分别为( )图9A .R 1=0.85 ΩB .R 2=3.67 ΩC .R 3=9 500 ΩD .R 4=95 000 Ω答案 BC12.如图10所示,带正电的粒子以一定的初速度v 0沿两板的中线进入水平放置的平行金属板内,恰好沿下板的边缘飞出,已知板长为L ,板间的距离为d ,板间电压为U ,带电粒子的电荷量为q ,粒子通过平行金属板的时间为t (不计粒子的重力)( )图10A .在时间t 内,静电力对粒子做的功为qUB .在后t 2时间内,静电力对粒子做的功为3qU 8C .粒子的出射速度偏转角tan θ=d LD .在粒子下落前d 4和后d 4的过程中,运动时间之比为2∶1 答案 BC解析 在时间t 内,因入射点与出射点的电势差为U 2,可知静电力对粒子做的功为qU 2,选项A 错误;设粒子在前t 2时间内和在后t 2时间内竖直位移分别为y 1、y 2,则y 1∶y 2=1∶3,则y 1=d 8,y 2=3d 8,则在后t 2时间内,静电力对粒子做的功为W 2=q ·38U =38qU ,故B 正确;粒子的出射速度偏转角正切为tan θ=v y v 0=at v 0=12at 212v 0t =12d 12L =d L ,故C 正确;粒子前d 4和后d 4的过程中,运动时间之比为1∶(2-1),故D错误.三、非选择题(本题共6小题,共60分)13.(6分)小王和小李两位同学分别测量电压表V1的内阻.(1)先用调好的欧姆表“×1 k”挡粗测电压表V1的内阻,测量时欧姆表的黑表笔与电压表的________(选填“+”或“-”)接线柱接触,测量结果如图11甲所示,则粗测电压表V1的内阻为________ kΩ.图11(2)为了精确测量电压表V1的内阻,小王同学用如图乙所示的电路,闭合开关S1前将滑动变阻器的滑片移到最________(选填“左”或“右”)端,电阻箱接入电路的电阻调到最________(选填“大”或“小”),闭合开关S1,调节滑动变阻器和电阻箱,使两电压表指针的偏转角度都较大,读出电压表V1、V2的示数分别为U1、U2,电阻箱的示数为R0,则被测电压表V1的内阻R V1=________.答案(1)+(1分)9.0(1分)(2)左(1分)大(1分)U1R0U2-U1(2分)14.(8分)在“测定金属的电阻率”的实验中,待测金属丝的电阻R约为5 Ω,实验室备有下列实验器材:A.电压表(量程0~3 V,内阻约为15 kΩ);B.电压表(量程0~15 V,内阻约为75 kΩ);C.电流表(量程0~3 A,内阻约为0.2 Ω);D.电流表(量程0~0.6 A,内阻约为1 Ω);E.滑动变阻器R1(0~10 Ω,0.6 A);F.滑动变阻器R2(0~2 000 Ω,0.1 A);G.电池组E(电动势为3 V);H.开关S,导线若干.(1)为减小实验误差,应选用的实验器材有________(填器材前面的序号).(2)为减小实验误差,应选用如图12中________(选填“甲”或“乙”)为该实验的电路原理图,并按所选择的电路原理图把如图丙中的实物图用线连接起来.图12(3)若用毫米刻度尺测得金属丝长度为60.00 cm ,用螺旋测微器测得金属丝的直径及两电表的示数如图13所示,则金属丝的直径为________ mm ,电阻值为________ Ω.图13(4)该金属丝的电阻率为________ Ω·m.答案 (1)ADEGH(1分) (2)乙(1分) 见解析图(2分) (3)0.635(1分) 2.4(1分) (4)1.27× 10-6(2分)解析 (1)由于电源的电动势为3 V ,所以电压表应选A ;被测电阻约为5 Ω,电路中的最大电流约为I =E R x =35A =0.6 A ,电流表应选D ;根据滑动变阻器允许通过的最大电流可知,滑动变阻器应选E ;还要选用电池组和开关,导线若干,故应选用的实验器材有A 、D 、E 、G 、H.(2)由于R V R x >R x R A ,应采用电流表外接法,应选题图乙所示电路,实物连接如图所示.(3)从螺旋测微器可以读出金属丝直径为0.635 mm ,从电压表可以读出电阻两端电压为1.20 V ,从电流表可以读出流过电阻的电流为0.50 A ,被测金属丝的阻值为R x =U x I x =1.200.50Ω=2.4 Ω.(4)由R x =ρL S,代入数据解得ρ≈1.27×10-6 Ω·m. 15.(8分)如图14所示,匀强电场的电场线与AC 平行,把10-8 C 的负电荷从A 点移到B 点,静电力做功6×10-8 J ,AB 长6 cm ,AB 与AC 成60°角.图14(1)求匀强电场的场强方向;(2)设B 处电势为1 V ,则A 处电势为多少?电子在A 处的电势能为多少?答案 (1)由C 指向A (2)-5 V 5 eV解析 (1)将负电荷从A 点移至B 点,静电力做正功,所以电荷所受静电力方向由A 指向C .又因为是负电荷,场强方向与负电荷受力方向相反,所以场强方向由C 指向A .(3分)(2)由W AB =E p A -E p B =q (φA -φB )得φA =W AB q +φB =⎝ ⎛⎭⎪⎫6×10-8-10-8+1 V =-5 V(3分) 则电子在A 点的电势能为E p A =qφA =(-e )×(-5 V)=5 eV .(2分)16.(10分)如图15所示,电阻R 1=2 Ω,小灯泡L 上标有“3 V 1.5 W ”,电源内阻r =1 Ω,滑动变阻器的最大阻值为R 0(大小未知),当触头P 滑动到最上端a 时理想电流表的读数为1 A ,小灯泡L 恰好正常发光,求:图15(1)滑动变阻器的最大阻值R 0;(2)当触头P 滑动到最下端b 时,求电源的总功率及输出功率.答案 (1)6 Ω (2)12 W 8 W解析 (1)当触头P 滑动到最上端a 时,流过小灯泡L 的电流为:I L =P L U L=0.5 A(1分) 流过滑动变阻器的电流:I 0=I A -I L =0.5 A(2分)故:R 0=U L I 0=6 Ω(1分) (2)电源电动势为:E =U L +I A (R 1+r )=6 V(2分)当触头P 滑动到最下端b 时,滑动变阻器和小灯泡均被短路,电路中总电流为:I =E R 1+r= 2 A(1分)故电源的总功率为:P 总=EI =12 W(1分)输出功率为:P 出=EI -I 2r =8 W .(2分)17.(12分)(2021·安徽芜湖市高三期末)如图16所示,水平放置的平行板电容器,两极板间距为d =0.06 m ,极板长为L =0.3 m ,接在直流电源上,有一带电液滴以v 0=0.5 m/s 的初速度从两极板左侧的正中央水平射入,恰好做匀速直线运动,当它运动到P 处时迅速将下极板向下平移Δd =0.02 m ,液滴最后恰好从极板的末端飞出, g 取10 m/s 2,求:图16(1)将下极板向下平移后,液滴的加速度大小;(2)液滴从射入电场开始计时,匀速运动到P 点所用的时间.答案 (1)2.5 m/s 2 (2)0.4 s解析 (1)带电液滴在板间受重力和竖直向上的静电力,因为液滴做匀速直线运动,则有q U d=mg (2分) 当下极板向下平移后,d 增大,E 减小,静电力减小,故液滴向下偏转,在电场中做类平抛运动,此时液滴所受静电力F ′=q U d ′=mgd d +Δd(2分) 由牛顿第二定律可得a =mg -F ′m =g (1-d d ′)=14g =2.5 m/s 2(2分) (2)因为液滴刚好从极板末端飞出,所以液滴在竖直方向上的位移是y =d 2+Δd (1分) 设液滴从P 点开始在匀强电场中飞行的时间为t 2,则d 2+Δd =12at 22(2分) 解得t 2=0.2 s(1分)而液滴从刚进入电场到出电场的时间t =L v 0=0.6 s(1分) 所以液滴从射入电场开始计时匀速运动到P 点所用的时间为t 1=t -t 2=0.4 s .(1分)18.(16分)(2021·江西赣州市期末)如图17所示,水平绝缘轨道AC 由光滑段AB 与粗糙段BC 组成,它与竖直光滑半圆轨道CD 在C 点处平滑连接,其中AB 处于电场区内.一带电荷量为+q 、质量为m 的可视为质点的滑块从A 处以水平初速度v 0进入电场区沿轨道运动,从B 点离开电场区继续沿轨道BC 运动,最后从圆轨道最高点D 处以水平速度v 离开圆轨道.已知:轨道BC 长l =1 m ,圆半径R =0.1 m ,m =0.01 kg ,q =5×10-5 C ,滑块与轨道BC 间的动摩擦因数μ=0.2,重力加速度g 取10 m/s 2,设装置处于真空环境中.图17(1)若滑块到达圆轨道D 点时的速度v =1 m/s①在D 点处时,求滑块受到的弹力F N ;②求滑块从B 点离开电场时的速度大小v B ;(2)若v 0=5 m/s ,为使滑块能到达圆轨道最高点D 处,且离开圆轨道后落在水平轨道BC 上,求A 、B 两点间电势差U AB 应满足的条件.答案 (1)①0 ②3 m/s (2)-1 600 V ≤U AB ≤800 V解析 (1)①根据牛顿第二定律和向心力公式得mg +F N =m v 2R(2分) 代入数据得F N =0(1分)②滑块由B 点运动到D 点的过程,根据动能定理有-μmgl -mg ·2R =12m v 2-12m v B 2(2分) 解得v B =3 m/s(1分)(2)当电势差U AB 最低时,滑块恰能经过最高点D ,此时v D =1 m/s(1分)全过程由动能定理得U AB q -μmgl -mg ·2R =12m v D 2-12m v 02(2分) 解得U AB =-1 600 V(1分)当电势差U AB 最高时,滑块经过最高点D 后做平抛运动,恰能落到B 点,则由平抛运动的规律,竖直方向:2R =12gt 2(1分) 水平方向:l =v D ′t (1分)全过程由动能定理得U AB ′q -μmgl -mg ·2R =12m v D ′2-12m v 02(2分) 解得U AB ′=800 V(1分)则AB 间电势差满足的条件是-1 600 V ≤U AB ≤800 V .(1分)。

2020-2021学年外研版(三起)五年级英语上册 Module 2模块综合检测卷 (含答案)

2020-2021学年外研版(三起)五年级英语上册 Module 2模块综合检测卷 (含答案)

Module2 模块综合检测听力部分一、根据录音,选出听到的图片。

( ) 1. A. B.( ) 2. A. B.( ) 3. A. B.( ) 4. A. B.( ) 5. A. B.二、听录音,选出听到的问句的答语。

( ) 1. A. We went to the supermarket. B We watch TV at home. ( ) 2. A. Yes, we did. B. Yes, we do.( ) 3. A. I visited lots of places. B. I bought lots of food and fruit. ( ) 4. A. Six bottles, please. B. Six, please.( ) 5. A. Half a kilo, please. B. They are ten yuan.三、根据录音把对话中的句子补充完整。

shopping list how many how much kilo need supermarket do for cheese noodlesA: Let’s go to the ________, Lingling. We ________ food ________ our picnicB: OK. Let’s go.A: Can you read the ________ to me, please?B: The first thing is bananas. ________ do you want?A: Six, please. Amy and Sam like bananas. ________ you like bananas.B: Yes, I do.A: Good! What’s next?B: Cheese. ________ cheese do we need?A: Half a ________ please. Do you like ________?B: No, I don’t like cheese. I like ________.A: Let’s buy one kilo of noodles.B: Great!笔试部分一、选出不同类的单词。

外研版英语七下试题 模块综合检测(二)

外研版英语七下试题 模块综合检测(二)

初中英语学习材料madeofjingetiejiModule 2 What can you do?模块综合检测(45分钟100分)第Ⅰ卷(共40分)Ⅰ. 听力(10分)(Ⅰ)录音中有五个句子, 听一遍后, 选择与其内容相符的图片。

(5分)1. ______2. ______3. ______4. ______5. _____(Ⅱ)录音中有一篇短文, 听两遍后, 选择最佳答案。

(5分)6. What does Joe like?A. Music.B. Chess.C. Reading.7. What club does Linda want to join?A. The Music Club.B. The Chess Club.C. The Swimming Club.8. ________wants to join the English Club.A. JoeB. LisaC. David9. How many friends of Joe’s are mentioned(提到)in the passage?A. Two.B. Three.C. Four.10. What is Linda’s favourite sport?A. Running.B. Skating.C. Swimming.Ⅱ. 单项填空(10分)1. I like playing ______ piano, but my brother likes playing ______ basketball.A. the; theB. a; theC. /; theD. the; /2. —________?—He can cook at home.A. What does Jim likeB. Does Jim like a horseC. Can Jim ride a horseD. What can Jim do3. Everybody in my class ________ a new club this term.A. joinB. joinsC. joiningD. to join4. ―Jim, can you ______ this word in Chinese?―Yes, I can ______ a little Chinese.A. speak; sayB. say; speakC. tell; speakD. talk; say5. —What do you usually do after school?—I ________ swim with my friends.A. readyB. ready toC. ready to doD. am ready to6. —________your brother speak French?—Yes, he has learnt it in Paris for three years.A. ShouldB. MustC. CanD. May7. What about ________ at home? It is too hot outside.A. stayingB. stayC. to stayD. stays8. Miss. Li is a new________. She ________ us English.A. teaches; teachesB. teacher; teachC. teaches; teacherD. teacher; teaches9. My mother enjoys ________ the tennis match very much.A. watchB. watchingC. watchesD. to watch10. Don’t worry! I’m sure you’ll ______ your classmates if you are kind and friendly to them.A. catch up withB. get on well withC. agree withD. be strict withⅢ. 完形填空(10分)Tongtong is three years old. She likes 1 English very much.Her mother 2 English in a high school.Tongtong likes to 3 English cartoon videos. She plays gameswith her dolls and 4 with them in English. She learns a lot bywatching the videos. Sometimes she can 5 but doesn’t know the 6 . When her mother comes back home, she will tell Tongtong what the words and sentences mean.Tongtong’s mother thinks that interest is important, and7 is more important. Tongtong has great interest in English speaking. She can learn to speak by 8 andlistening. But she should have chances(机会)to use it. So her mother tries to talk with her in English at home and takes her to the 9 at school. Though Tongtong makes many mistakes, her English improves 10 .1. A. telling B. speaking C. saying D. talking2. A. teaches B speaks C. learns D. studies3. A. read B. watch C. look at D. see4. A. speaks B. talks C. says D. tells5. A. speak B. to speak C. speaking D. speaks6. A. spelling B. meaning C. words D. sentences7. A. interest B. using C. writing D. reading8. A. watching B. watch C. watches D. to watch9. A. supermarket B. cinema C. bookshop D. English corner10. A. quick B. quickly C. slow D. slowlyⅣ. 阅读理解(10分)Music teachers wanted forNo. 1Middle SchoolWe want two music teachers for our school Music Club. Youneed to be able to play the guitar or the violin and be good withkids.Time: 3: 20 p. m. —4: 20 p. m. Monday to Friday every week.Pay: 100 yuan an hour.Phone number: 372-3966Email address: No. 1 middleschoolmc@126. comAddress: 326 Bridge Street. (Take No. 121 Bus. )Art teacher wantedCan you paint? Can you draw? Do you like kids and want to be with them? Then you can be in Yixiu Art Club.Time: 8: 00 a. m. —10: 00 a. m. Saturday and Sunday every week.Pay: 80 y uan an hour.Phone number: 693-8925Email address: yixiuartclub @163. comAddress: 165 Zhangshan Road. (Take No. 212 Bus. )1. No. 1 Middle School needs________.A. a music teacherB. an art teacherC. two art teachersD. two music teachers2. How many hours does a music teacher need to work every week?A. 5B. 7C. 8D. 103. An art teacher can get about ________ in a month.A. 800 yuanB. 1, 000 yuanC. 1, 280 yuanD. 2, 500 yuan4. Which bus does an art teacher need to take to get there?A. No. 121 Bus.B. No. 122 Bus.C. No. 101 Bus.D. No. 212 Bus.5. If Andrew wants to be an art teacher, he can________.A. call 372-3966B. call 693-8925C. send emails to middleschoolmc@ 126. comD. send emails to yixiuartclub@ 126. com第Ⅱ卷(共60分)Ⅴ. 根据句意及首字母提示完成单词(10分)1. We choose Daming as our class m________; he always helps us.2. My uncle is f________ and strong. He likes sports very much.3. I p________ never to lie(撒谎)to you from now on.4. Lisa will learn painting in the Art Club this t________.5. They like s________ in summer in the lake because it’s too hot.Ⅵ. 句型转换(10分)1. Lucy can cook some delicious food and drink. (改为否定句)Lucy ________ cook ________ delicious food ________ drink.2. The boy is good at football. (改为同义句)The boy _________ ________ _______football.3. Tony can sing some Chinese songs. (改为一般疑问句并作肯定回答) —________Tony sing ________ Chinese songs?—________, he________.4. David wants to be the cleaning monitor. (改为同义句)David ________ ________ to be the cleaning monitor.5. The girl can play the piano. (对画线部分提问)_________ _______ the girl ________?Ⅶ. 完成句子(15分)1. 每次考试结束了, 我都担心结果。

外研英语必修3:模块综合检测(二)

外研英语必修3:模块综合检测(二)

Ⅰ.语言知识及应用(共两节,满分45分)第一节完形填空(共15小题;每小题2分,满分30分)阅读下面短文,掌握其大意,然后从1~15各题所给的A、B、C和D项中,选出最佳选项。

The passengers on the bus watched sympathetically as the attractive young woman with the white cane made her way carefully up the steps.She __1__ the driver and,using her hands to feel the __2__ of the seats,walked down and found the __3__ which the driver had told her was empty.Then she settled in.It had been a year since Susan,34,due to a medical misdiagnosis (误诊),was suddenly thrown into a world of __4__.Mark,her husband,was an Air Force officer and he loved Susan with all his heart.He __5__ her how to rely on her other senses,specifically her hearing,to determine where she was and __6__ to adapt herself to the new environment.He helped her befriend the bus drivers who could __7__ for her,and save her a seat.Finally,Susan decided that she was ready to try the __8__ on her own.Monday morning,she said goodbye and for the first time,they went their __9__ ways.On Friday morning,Susan took the bus to work as usual.As she was __10__ the bus,the driver said,“Lady,I do envy you.” Susan had no __11__ what the driver was talking about,and asked,“What do you __12__?”The driver answered,“You know,every morning for the __13__ week,a fine-looking gentleman __14___ a military uniform has been standing across the corner watching you as you get off the bus.He __15__ you cross the street safely and he watches until you enter your office building.You are one lucky lady.”Tears of gratitude poured down Susan’s cheeks.【解题导语】当痛苦和灾难降临到你的头上时,你会怎么办?这篇文章告诉我们爱情能创造人间奇迹。

2022届高中化学新教材同步必修第二册 模块综合试卷(二)

2022届高中化学新教材同步必修第二册 模块综合试卷(二)

模块综合试卷(二)(时间:90分钟 满分:100分)一、选择题(本题包括18小题,每小题3分,共54分,每小题只有一个选项符合题意)1.(2019·江西临川一中月考)下列说法正确的是( )A .油脂在人体内水解为氨基酸和甘油等小分子才能被吸收B .现代科技已经能够拍到氢键的“照片”,直观地证实了水分子间的氢键是一个水分子中的氢原子与另一个水分子中的氧原子间形成的化学键C .我国已能利用3D 打印技术,以钛合金粉末为原料,通过激光熔化,逐层堆积来制造飞机钛合金结构件,高温时可用金属钠还原相应的氯化物来制取金属钛D .用活性炭为糖浆脱色和用次氯酸盐漂白纸浆的原理相同答案 C解析 油脂在人体内水解为高级脂肪酸和甘油,蛋白质在人体内水解生成氨基酸,A 项错误;拍到氢键的“照片”,直观地证实了水分子间的氢键是一个水分子中的氢原子与另一个水分子中的氧原子间形成的分子间作用力,氢键不属于化学键,B 项错误;钠与熔融的盐发生置换反应,生成相应的单质,所以高温时可用金属钠还原相应的钛的氯化物来制取金属钛,C 项正确;活性炭脱色是利用其吸附性,次氯酸盐漂白纸浆是利用次氯酸的强氧化性,D 项错误。

考点 化学与生物题点 化学物质在生活中应用2.2018年世界环境日主题为“塑战速决”。

下列做法不应该提倡的是( )A .使用布袋代替一次性塑料袋购物B .焚烧废旧塑料以防止“白色污染”C .用CO 2合成聚碳酸酯可降解塑料D .用高炉喷吹技术综合利用废旧塑料答案 B解析 用布袋代替一次性塑料袋购物,减少了塑料袋的使用,能减少“白色污染”,A 项应该提倡;焚烧废旧塑料会产生致癌物质,应使用塑料的替代品防止“白色污染”,B 项不应该提倡;利用CO 2合成聚碳酸酯可降解塑料,实现碳的循环利用,减少二氧化碳的排放,C 项应该提倡;用高炉喷吹技术综合利用废旧塑料,可减少“白色污染”,D 项应该提倡。

考点 化学与环境保护题点 环境污染及治理3.(2019·河北景县梁集中学调研)钛是一种用途广泛的活泼金属。

高中数学 模块综合检测2(含解析)新人教A版选择性必修第二册-新人教A版高二选择性必修第二册数学试题

高中数学 模块综合检测2(含解析)新人教A版选择性必修第二册-新人教A版高二选择性必修第二册数学试题

模块综合检测(二)(满分:150分 时间:120分钟)一、单项选择题(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f (x )=ln x 2x ,则lim Δx →0f ⎝ ⎛⎭⎪⎫12-f ⎝ ⎛⎭⎪⎫12+Δx Δx =( ) A .-2-ln 2B .-2+ln 2C .2-ln 2D .2+ln 2A [由题意,函数f (x )=ln x 2x , 则f ′(x )=1x ·2x -(2x )′ln x (2x )2=2x -12⎝ ⎛⎭⎪⎫1-12ln x 2x , 则lim Δx →0f ⎝ ⎛⎭⎪⎫12-f ⎝ ⎛⎭⎪⎫12+Δx Δx =-f ′⎝ ⎛⎭⎪⎫12=-2+ln 22×12=-2-ln 2,故选A.] 2.等比数列{a n }是递减数列,前n 项的积为T n ,若T 13=4T 9,则a 8a 15=( )A .±2B .±4C .2D .4C [∵T 13=4T 9,∴a 1a 2…a 9a 10a 11a 12a 13=4a 1a 2…a 9,∴a 10a 11a 12a 13=4.又∵a 10·a 13=a 11·a 12=a 8·a 15,∴(a 8·a 15)2=4,∴a 8a 15=±2.又∵{a n }为递减数列,∴q >0,∴a 8a 15=2.]3.已知公差不为0的等差数列{a n }的前23项的和等于前8项的和.若a 8+a k =0,则k =( )A .22B .23C .24D .25C [等差数列的前n 项和S n 可看做关于n 的二次函数(图象过原点).由S 23=S 8,得S n 的图象关于n =312对称,所以S 15=S 16,即a 16=0,所以a 8+a 24=2a 16=0,所以k =24.]4.已知函数f (x )=(x +a )e x 的图象在x =1和x =-1处的切线相互垂直,则a =( )A .-1B .0C .1D .2A [因为f ′(x )=(x +a +1)e x ,所以f ′(1)=(a +2)e ,f ′(-1)=a e -1=a e ,由题意有f (1)f ′(-1)=-1,所以a =-1,选A.]5.设S n 是公差不为0的等差数列{a n }的前n 项和,S 3=a 22,且S 1,S 2,S 4成等比数列,则a 10=( )A .15B .19C .21D .30B [由S 3=a 22得3a 2=a 22,故a 2=0或a 2=3.由S 1,S 2,S 4成等比数列可得S 22=S 1·S 4,又S 1=a 2-d ,S 2=2a 2-d ,S 4=4a 2+2d ,故(2a 2-d )2=(a 2-d )(4a 2+2d ),化简得3d 2=2a 2d ,又d ≠0,∴a 2=3,d =2,a 1=1,∴a n =1+2(n -1)=2n -1,∴a 10=19.]6.若函数f (x )=ax -ln x 的图象上存在与直线x +2y -4=0垂直的切线,则实数a 的取值X 围是( )A .(-2,+∞)B .⎝ ⎛⎭⎪⎫12,+∞ C .⎝ ⎛⎭⎪⎫-12,+∞ D .(2,+∞)D [因为函数f (x )=ax -ln x 的图象上存在与直线x +2y -4=0垂直的切线,所以函数f (x )=ax -ln x 的图象上存在斜率为2的切线,故k =f ′(x )=a -1x =2有解,所以a =2+1x ,x >0有解,因为y =2+1x ,x >0的值域为(2,+∞).所以a ∈(2,+∞).]7.已知等差数列{}a n 的前n 项为S n ,且a 1+a 5=-14,S 9=-27,则使得S n 取最小值时的n 为( )A .1B .6C .7D .6或7B [由等差数列{a n }的性质,可得a 1+a 5=2a 3=-14⇒a 3=-7,又S 9=9(a 1+a 9)2=-27⇒a 1+a 9=-6⇒a 5=-3,所以d =a 5-a 35-3=2,所以数列{a n }的通项公式为a n =a 3+(n -3)d =-7+(n -3)×2=2n -13,令a n ≤0⇒2n -13≤0,解得n ≤132,所以数列的前6项为负数,从第7项开始为正数,所以使得S n 取最小值时的n 为6,故选B.]8.若方底无盖水箱的容积为256,则最省材料时,它的高为( )A .4B .6C .4.5D .8A [设底面边长为x ,高为h ,则V (x )=x 2·h =256,∴h =256x 2.∴S (x )=x 2+4xh =x 2+4x ·256x 2=x 2+4×256x ,∴S ′(x )=2x -4×256x 2. 令S ′(x )=0,解得x =8,∴当x =8时,S (x )取得最小值.∴h =25682=4.]二、多项选择题(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,部分选对的得3分,有选错的得0分)9.设数列{}a n 是等差数列,S n 是其前n 项和,a 1>0,且S 6=S 9,则( )A .d <0B .a 8=0C .S 5>S 6D .S 7或S 8为S n 的最大值ABD [根据题意可得a 7+a 8+a 9=0⇒3a 8=0⇒a 8=0,∵数列{}a n 是等差数列,a 1>0,∴公差d <0,所以数列{}a n 是单调递减数列, 对于A 、B ,d <0,a 8=0,显然成立;对于C ,由a 6>0,则S 5<S 6,故C 不正确;对于D ,由a 8=0,则S 7=S 8,又数列为递减数列,则S 7或S 8为S n 的最大值,故D 正确.故选ABD.]10.如图是y =f (x )导数的图象,对于下列四个判断,其中正确的判断是( )A .f (x )在(-2,-1)上是增函数B .当x =-1时,f (x )取得极小值C .f (x )在(-1,2)上是增函数,在(2,4)上是减函数D .当x =3时,f (x )取得极小值BC [根据图象知当x ∈(-2,-1),x ∈(2,4)时,f ′(x )<0,函数单调递减; 当x ∈(-1,2),x ∈(4,+∞)时,f ′(x )>0,函数单调递增.故A 错误;故当x =-1时,f (x )取得极小值,B 正确;C 正确;当x =3时,f (x )不是取得极小值,D 错误.故选BC.]11.已知等比数列{}a n 的公比q =-23,等差数列{}b n 的首项b 1=12,若a 9>b 9且a 10>b 10,则以下结论正确的有( )A .a 9a 10<0B .a 9>a 10C .b 10>0D .b 9>b 10AD [∵等比数列{}a n 的公比q =-23,∴a 9和a 10异号,∴a 9a 10<0 ,故A 正确;但不能确定a 9和a 10的大小关系,故B 不正确;∵a 9和a 10异号,且a 9>b 9且a 10>b 10,∴b 9和b 10中至少有一个数是负数, 又∵b 1=12>0 ,∴d <0,∴b 9>b 10 ,故D 正确,∴b 10一定是负数,即b 10<0 ,故C 不正确. 故选AD.]12.已知函数f (x )=x ln x ,若0<x 1<x 2,则下列结论正确的是( )A .x 2f (x 1)<x 1f (x 2)B .x 1+f (x 1)<x 2+f (x 2)C .f (x 1)-f (x 2)x 1-x 2<0 D .当ln x >-1时,x 1f (x 1)+x 2f (x 2)>2x 2f (x 1)AD [设g (x )=f (x )x =ln x ,函数单调递增,则g (x 2)>g (x 1),即f (x 2)x 2>f (x 1)x 1,∴x 1f (x 2)>x 2f (x 1),A 正确; 设h (x )=f (x )+x ∴h ′(x )=ln x +2不是恒大于零,B 错误;f (x )=x ln x ,∴f ′(x )=ln x +1不是恒小于零,C 错误;ln x >-1,故f ′(x )=ln x +1>0,函数单调递增.故(x 2-x 1)(f (x 2)-f (x 1))=x 1f (x 1)+x 2f (x 2)-x 2f (x 1)-x 1f (x 2)>0,即x 1f (x 1)+x 2f (x 2)>x 2f (x 1)+x 1f (x 2).f (x 2)x 2=ln x 2>f (x 1)x 1=ln x 1,∴x 1f (x 2)>x 2f (x 1),即x 1f (x 1)+x 2f (x 2)>2x 2f (x 1),D 正确.故选AD.]三、填空题(本题共4小题,每小题5分,共20分.把答案填在题中的横线上)13.数列{a n }的前n 项和为S n ,若a n +1=11-a n(n ∈N *),a 1=2,则S 50=________. 25[因为a n +1=11-a n (n ∈N *),a 1=2,所以a 2=11-a 1=-1,a 3=11-a 2=12,a 4=11-a 3=2,∴数列{a n }是以3为周期的周期数列,且前三项和S 3=2-1+12=32, ∴S 50=16S 3+2-1=25.]14.将边长为1 m 的正三角形薄铁皮,沿一条平行于某边的直线剪成两块,其中一块是梯形,记s =(梯形的周长)2梯形的面积,则s 的最小值是________. 3233[设AD =x (0<x <1),则DE =AD =x ,∴梯形的周长为x+2(1-x )+1=3-x .又S △ADE =34x 2,∴梯形的面积为34-34x 2,∴s =433×x 2-6x +91-x 2(0<x <1), 则s ′=-833×(3x -1)(x -3)(1-x 2)2. 令s ′=0,解得x =13.当x ∈⎝ ⎛⎭⎪⎫0,13时,s ′<0,s 为减函数;当x ∈⎝ ⎛⎭⎪⎫13,1时,s ′>0,s 为增函数.故当x =13时,s 取得极小值,也是最小值,此时s 的最小值为3233.]15.设公比为q (q >0)的等比数列{a n }的前n 项和为S n .若S 2=3a 2+2,S 4=3a 4+2,则q =________.32[由S 2=3a 2+2,S 4=3a 4+2相减可得a 3+a 4=3a 4-3a 2,同除以a 2可得2q 2-q -3=0,解得q =32或q =-1.因为q >0,所以q =32.]16.已知函数f (x )是定义在R 上的偶函数,当x >0时,xf ′(x )>f (x ),若f (2)=0,则2f (3)________3f (2)(填“>”“<”)不等式x ·f (x )>0的解集为________.(本题第一空2分,第二空3分)> (-2,0)∪(2,+∞)[由题意,令g (x )=f (x )x ,∵x >0时,g ′(x )=xf ′(x )-f (x )x 2>0.∴g (x )在(0,+∞)单调递增,∵f (x )x 在(0,+∞)上单调递增,∴f (3)3>f (2)2即2f (3)>3f (2).又∵f (-x )=f (x ),∴g (-x )=-g (x ),则g (x )是奇函数,且g (x )在(-∞,0)上递增,又g (2)=f (2)2=0,∴当0<x <2时,g (x )<0,当x >2时,g (x )>0;根据函数的奇偶性,可得当-2<x <0时,g (x )>0,当x <-2时,g (x )<0. ∴不等式x ·f (x )>0的解集为{x |-2<x <0或x >2}.]四、解答题(本题共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.(本小题满分10分)在等差数列{}a n 中,已知a 1=1,a 3=-5.(1)求数列{}a n 的通项公式;(2)若数列{}a n 的前k 项和S k =-25,求k 的值.[解](1)由题意,设等差数列{}a n 的公差为d ,则a n =a 1+()n -1d ,因为a 1=1,a 3=-5,可得1+2d =-5,解得d =-3,所以数列{}a n 的通项公式为a n =1+()n -1×()-3=4-3n .(2)由(1)可知a n =4-3n ,所以S n =n [1+(4-3n )]2=-32n 2+52n ,又由S k =-25,可得-32k 2+52k =-25,即3k 2-5k -50=0,解得k =5或k =-103,又因为k ∈N *,所以k =5.18.(本小题满分12分)已知函数f (x )=a ln x +12x 2.(1)求f (x )的单调区间;(2)函数g (x )=23x 3-16(x >0),求证:a =1时f (x )的图象不在g (x )的图象的上方.[解](1)f ′(x )=a x +x (x >0),若a ≥0,则f ′(x )>0,f (x )在 (0,+∞)上单调递增;若a <0,令f ′(x )=0,解得x =±-a ,由f ′(x )=(x --a )(x +-a )x >0,得x >-a ,由f ′(x )<0,得0<x <-a .从而f (x )的单调递增区间为(-a ,+∞),单调递减区间为(0,-a ). (2)证明:令φ(x )=f (x )-g (x ),当a =1时,φ(x )=ln x +12x 2-23x 3+16(x >0),则φ′(x )=1x +x -2x 2=1+x 2-2x 3x =(1-x )(2x 2+x +1)x. 令φ′(x )=0,解得x =1.当0<x <1时,φ′(x )>0,φ(x )单调递增;当x >1时,φ′(x )<0,φ(x )单调递减.∴当x =1时,φ(x )取得最大值φ(1)=12-23+16=0,∴φ(x )≤0,即f (x )≤g (x ).故a =1时f (x )的图象不在g (x )的图象的上方.19.(本小题满分12分)已知数列{}a n 的前n 项和为S n ,且2S n =3a n -1.(1)求数列{}a n 的通项公式;(2)若数列{}b n 满足b n =log 3a n +1,求数列⎩⎪⎨⎪⎧⎭⎪⎬⎪⎫1b n b n +1的前n 项和T n .[解](1)由2S n =3a n -1()n ∈N +得,2S n -1=3a n -1-1()n ≥2.两式相减并整理得,a n =3a n -1()n ≥2.令n =1,由2S n =3a n -1()n ∈N +得,a 1=1.故{}a n 是以1为首项,公比为3的等比数列,因此a n =3n -1()n ∈N +.(2)由b n =log 3a n +1,结合a n =3n -1得,b n =n .则1b n b n +1=1n ()n +1=1n -1n +1 故T n =1b 1b 2+1b 2b 3+…+1b n b n +1=⎝ ⎛⎭⎪⎫1-12+⎝ ⎛⎭⎪⎫12-13+…+1n -1n +1=n n +1. 20.(本小题满分12分)某旅游景点预计2019年1月份起前x 个月的旅游人数的和p (x )(单位:万人)与x 的关系近似地满足p (x )=12x (x +1)(39-2x )(x ∈N *,且x ≤12).已知第x 个月的人均消费额q (x )(单位:元)与x 的近似关系是q (x )=⎩⎪⎨⎪⎧ 35-2x (x ∈N *,且1≤x ≤6),160x (x ∈N *,且7≤x ≤12).(1)写出2019年第x 个月的旅游人数f (x )(单位:万人)与x 的函数关系式;(2)问2019年第几个月旅游消费总额最大?最大月旅游消费总额为多少元?[解](1)当x =1时,f (1)=p (1)=37,当2≤x ≤12,且x ∈N *时,f (x )=p (x )-p (x -1)=12x (x +1)(39-2x )-12(x -1)x (41-2x )=-3x 2+40x ,验证x =1也满足此式,所以f (x )=-3x 2+40x (x ∈N *,且1≤x ≤12).(2)第x 个月旅游消费总额(单位:万元)为g (x )=⎩⎨⎧ (-3x 2+40x )(35-2x )(x ∈N *,且1≤x ≤6),(-3x 2+40x )·160x (x ∈N *,且7≤x ≤12),即g (x )=⎩⎪⎨⎪⎧6x 3-185x 2+1 400x (x ∈N *,且1≤x ≤6),-480x +6 400(x ∈N *,且7≤x ≤12). (i)当1≤x ≤6,且x ∈N *时,g ′(x )=18x 2-370x +1 400,令g ′(x )=0,解得x =5或x =1409(舍去).当1≤x <5时,g ′(x )>0,当5<x ≤6时,g ′(x )<0,∴当x =5时,g (x )max =g (5)=3 125.(ii)当7≤x ≤12,且x ∈N *时,g (x )=-480x +6 400是减函数,∴当x =7时,g (x )max =g (7)=3 040.综上,2019年5月份的旅游消费总额最大,最大旅游消费总额为3 125万元.21.(本小题满分12分)已知数列{a n }的通项公式为a n =3n -1,在等差数列{b n }中,b n >0,且b 1+b 2+b 3=15,又a 1+b 1,a 2+b 2,a 3+b 3成等比数列.(1)求数列{a n b n }的通项公式;(2)求数列{a n b n }的前n 项和T n .[解](1)∵a n =3n -1,∴a 1=1,a 2=3,a 3=9.∵在等差数列{b n }中,b 1+b 2+b 3=15,∴3b 2=15,则b 2=5.设等差数列{b n }的公差为d ,又a 1+b 1,a 2+b 2,a 3+b 3成等比数列,∴(1+5-d )(9+5+d )=64,解得d =-10或d =2.∵b n >0,∴d =-10应舍去,∴d =2,∴b 1=3,∴b n =2n +1.故a n b n=(2n+1)·3n-1.(2)由(1)知T n=3×1+5×3+7×32+…+(2n-1)3n-2+(2n+1)3n-1,①3T n=3×3+5×32+7×33+…+(2n-1)3n-1+(2n+1)3n,②①-②,得-2T n=3×1+2×3+2×32+2×33+…+2×3n-1-(2n+1)×3n =3+2×(3+32+33+…+3n-1)-(2n+1)×3n=3+2×3-3n1-3-(2n+1)×3n=3n-(2n+1)×3n=-2n·3n.∴T n=n·3n.22.(本小题满分12分)设函数f (x)=x3-6x+5,x∈R.(1)求f (x)的极值点;(2)若关于x的方程f (x)=a有3个不同实根,某某数a的取值X围;(3)已知当x∈(1,+∞)时,f (x)≥k(x-1)恒成立,某某数k的取值X围.[解](1)f ′(x)=3(x2-2),令f ′(x)=0,得x1=-2,x2= 2.当x∈(-∞,-2)∪(2,+∞)时,f ′(x)>0,当x∈(-2,2) 时,f ′(x)<0,因此x1=-2,x2=2分别为f (x)的极大值点、极小值点.(2)由(1)的分析可知y=f (x)图象的大致形状及走向如图所示.要使直线y=a 与y=f (x)的图象有3个不同交点需5-42=f (2)<a<f (-2)=5+4 2.则方程f (x)=a有3个不同实根时,所某某数a的取值X围为(5-42,5+42).(3)法一:f (x)≥k(x-1),即(x-1)(x2+x-5)≥k(x-1),因为x>1,所以k≤x2+x-5在(1,+∞)上恒成立,令g(x)=x2+x-5,由二次函数的性质得g(x)在(1,+∞)上是增函数,所以g(x)>g(1)=-3,所以所求k的取值X围是为(-∞,-3].法二:直线y=k(x-1)过定点(1,0)且f (1)=0,曲线f (x)在点(1,0)处切线斜率f ′(1)=-3,由(2)中图知要使x∈(1,+∞)时,f (x)≥k(x-1)恒成立需k≤-3.故实数k的取值X围为(-∞,-3].。

2021-2022学年人教版语文必修一模块综合检测(二) Word版含解析

2021-2022学年人教版语文必修一模块综合检测(二) Word版含解析

模块综合检测(二)(时间:150分钟满分:150分)第Ⅰ卷阅读题一、现代文阅读(35分)(一)论述类文本阅读(9分,每小题3分)阅读下面的文字,完成1~3题。

古代中国很早就建立了一支浩大的官僚队伍。

中国历史上一个鲜亮的规律就是,历代官员的数量呈不断扩张趋势。

明代刘体健称“历代官数,汉七千八百员,唐万八千员,宋极冗至三万四千员”。

到了明代,文武官员共十二万余人。

官僚系统的不断扩张,是皇权专制制度不断强化的结果。

官权是皇权的延长,君主专制不断完善,注定官僚系统也不断延长膨胀。

秦汉以后,中心集权不断发生强化,官员的权利被不断分割,以期官员相互制衡,弱化他们对皇权的挑战。

由此造成一官多职的现象,官僚队伍进一步扩大。

中国传统社会经济结构格外单一,传统赋税又主要只有农业税一途,官员数量的不断膨胀,使得俸禄成为财政支出的第一大项。

比如西汉末年,国家赋税收入“一岁为四十余万石,吏俸用其半”,官员俸禄支出占国家财政收入的一半。

所以支付官俸成为财政第一大难题,为了节省开支,薄俸制就成为大多数时候不得已的选择。

特殊是在皇权专制达于极致的明清两朝,官员薪俸之低也达到惊人的程度。

低俸制的另一个缘由是皇权专制的自私短视本性。

皇权专制本身是一项不合理的制度支配,它的设计原理是千方百计保证君主的利益,损害其他社会阶层的利益,这其中就包括官僚阶层的利益。

在君主专制制度下,皇帝好比一个公司的老总,百官好比员工。

压低员工工资,保证自己的利润,对老板来说是一种本能的偏好。

从皇帝的视角看来,实行“薄俸制”和“低饷制”,用“训练”来要求百官清廉,既省心省力,又为国家节省了大量财政经费。

传统社会的低俸制,到底低到什么程度?以明代的县令收入为例。

明代正七品县令月俸只有七石五斗。

用七石五斗粮食养活一个大家庭甚至家族,这个县令的生活只能是一般市民水平。

而且明代对于官员办公费用不予考虑,师爷、账房、跟随、门房和稿签等手下均需要县令来养活。

再比如曾国藩在做翰林院检讨时,年收入为129两左右,年支出为608两左右。

高中数学模块综合检测新人教A版必修第二册

高中数学模块综合检测新人教A版必修第二册

模块综合检测(时间:120分钟,满分150分)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.已知复数z 满足i z +2=i,则在复平面内,z 对应的点位于( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限【答案】A2.在△ABC 中,a =3,b =2,A =30°,则sin B =( ) A .13 B .23 C .23D .223【答案】A3.某校高一年级有男生450人,女生550人,若在各层中按比例抽取样本,总样本量为40,则在男生、女生中抽取的人数分别为( )A .17,23B .18,22C .19,21D .22,18【答案】B4.已知向量a ,b 的夹角为60°,|a |=2,|b |=1,则a -2b 与b 的夹角是( ) A .30° B .60° C .120° D .150° 【答案】C5.在某中学举行的环保知识竞赛中,将三个年级参赛学生的成绩进行整理后分为5组,绘制如图所示的频率分布直方图,图中从左到右依次为第一、第二、第三、第四、第五小组,已知第二小组的频数是40,则成绩在80~100分的学生人数是( )A .25B .20C .18D .15【答案】D6.2021年是中国共产党成立100周年,电影频道推出“经典频传:看电影,学党史”系列短视频,首批21支短视频全网发布,传扬中国共产党伟大精神,为广大青年群体带来精神感召.小李同学打算从《青春之歌》《闪闪的红星》《英雄儿女》《焦裕禄》等四支短视频中随机选择两支观看,则选择观看《青春之歌》的概率为( )A .12B .13C .14D .25【答案】A7.我国南宋著名数学家秦九韶在他的著作《数书九章》卷五“田域类”里记载了这样一个题目:“今有沙田一段,有三斜,其小斜一十三里,中斜一十四里,大斜一十五里.里法三百步.欲知为田几何.”这道题讲的是有一块三角形的沙田,三边长分别为13里,14里,15里,假设1里按500米计算,则该沙田的面积为( )A .15平方千米B .18平方千米C .21平方千米D .24平方千米【答案】C【解析】设在△ABC 中,a =13里,b =14里,c =15里,∴由余弦定理得cos C =132+142-1522×13×14=513,∴sin C =1213.故△ABC 的面积为12×13×14×1213×5002×11 0002=21(平方千米).故选C .8.在三棱锥ABCD 中,△ABC 与△BCD 都是正三角形,平面ABC ⊥平面BCD ,若该三棱锥的外接球的体积为2015π,则△ABC 的边长为( )A .332 B .634 C .633 D .6【答案】D【解析】如图,取BC 中点M ,连接AM ,DM .设等边△ABC 与等边△BCD 的外心分别为N ,G ,三棱锥外接球的球心为O ,连接OA ,OD ,ON ,OG .由V =4π3R 3=2015π,得外接球半径R =15.设△ABC 的边长为a ,则ON =GM =13DM =36a ,AN =23AM =33a .在Rt △ANO 中,由ON 2+AN 2=R 2,得a 212+a 23=15,解得a =6.故选D .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,部分选对的得2分,有选错的得0分.9.下列说法中错误的是( )A .若事件A 与事件B 互斥,则P (A )+P (B )=1B .若事件A 与事件B 满足P (A )+P (B )=1,则事件A 与事件B 为对立事件C .“事件A 与事件B 互斥”是“事件A 与事件B 对立”的必要不充分条件D .某人打靶时连续射击两次,则事件“至少有一次中靶”与事件“至多有一次中靶”互为对立事件【答案】ABD【解析】若事件A 与事件B 互斥,则有可能P (A )+P (B )<1,故A 不正确;若事件A 与事件B 为同一事件,且P (A )=0.5,则满足P (A )+P (B )=1,但事件A 与事件B 不是对立事件,B 不正确;互斥不一定对立,对立一定互斥,故C 正确;某人打靶时连续射击两次,事件“至少有一次中靶”与事件“至多有一次中靶”既不互斥也不对立,D 错误.故选ABD .10.如图是民航部门统计的今年春运期间十二个城市售出的往返机票的平均价格以及相比去年同期变化幅度的数据统计图表,根据图表,下面叙述正确的是( )A .深圳的变化幅度最小,北京的平均价格最高B .深圳和厦门的春运期间往返机票价格同去年相比有所下降C .平均价格从高到低居于前三位的城市为北京、深圳、广州D .平均价格的涨幅从高到低居于前三位的城市为天津、西安、厦门 【答案】ABC【解析】由图可知深圳对应的小黑点最接近0%,故变化幅度最小,北京对应的条形图最高,则北京的平均价格最高,A 正确;深圳和厦门对应的小黑点在0%以下,故深圳和厦门的价格同去年相比有所下降,B 正确;条形图由高到低居于前三位的城市为北京、深圳和广州,C 正确;平均价格的涨幅由高到低分别为天津、西安和南京,D 错误.故选ABC .11.△ABC 是边长为2的等边三角形,已知向量a ,b 满足AB →=2a ,AC →=2a +b ,则下列结论中正确的是( )A .a 为单位向量B .a ⊥bC .b ∥BC →D .(4a +b )⊥BC →【答案】ACD【解析】由AB →=2a ,得a =12AB →,又AB =2,所以|a |=1,即a 是单位向量,A 正确;a ,b 的夹角为120°,B 错误;因为AC →=AB →+BC →=2a +b ,所以BC →=b ,C 正确;(4a +b )·BC →=4a ·b +b2=4×1×2×cos 120°+4=-4+4=0,D 正确.故选ACD .12.如图,点P 在正方体ABCD -A 1B 1C 1D 1的面对角线BC 1上运动,则( )A .三棱锥A -D 1PC 的体积不变B .A 1P ∥平面ACD 1C .DP ⊥BC 1D .平面PDB 1⊥平面ACD 1【答案】ABD【解析】连接BD 交AC 于点O ,连接DC 1交D 1C 于点O 1,连接OO 1,则OO 1∥BC 1,所以BC 1∥平面AD 1C ,动点P 到平面AD 1C 的距离不变,所以三棱锥PAD 1C 的体积不变,又因为V 三棱锥PAD 1C =V 三棱锥AD 1PC ,所以A 正确;因为平面A 1C 1B ∥平面AD 1C ,A 1P ⊂平面A 1C 1B ,所以A 1P ∥平面ACD 1,B 正确;由于当点P 在B 点时,DB 不垂直于BC 1,即DP 不垂直BC 1,故C 不正确;由于DB 1⊥D 1C ,DB 1⊥AD 1,D 1C ∩AD 1=D 1,所以DB 1⊥平面ACD 1,又因为DB 1⊂平面PDB 1,所以平面PDB 1⊥平面ACD 1,D 正确.故选ABD .三、填空题:本题共4小题,每小题5分,共20分.13.已知复数z =1+3i 1-i ,z -为z 的共轭复数,则z 的虚部为________.【答案】-2【解析】由z =1+3i 1-i =(1+3i )(1+i )(1-i )(1+i )=-2+4i2=-1+2i,得z -=-1-2i,∴复数z 的虚部为-2.14.一组数据按从小到大的顺序排列为1,3,3,x ,7,8,10,11,其中x ≠7,已知该组数据的中位数为众数的2倍,则:(1)该组数据的上四分位数是________; (2)该组数据的方差为________. 【答案】(1)9 (2)11.25【解析】(1)一组数据按从小到大的顺序排列为1,3,3,x ,7,8,10,11,其中x ≠7,∵该组数据的中位数为众数的2倍,∴x +72=2×3,解得x =5.∵8×0.75=6,∴该组数据的上四分位数是8+102=9.(2)该组数据的平均数为:18(1+3+3+5+7+8+10+11)=6,∴该组数据的方差为18[(1-6)2+(3-6)2+(3-6)2+(5-6)2+(7-6)2+(8-6)2+(10-6)2+(11-6)2]=11.25.15.a ,b ,c 分别为△ABC 内角A ,B ,C 的对边.已知ab cos(A -B )=a 2+b 2-c 2,A =45°,a =2,则c =________.【答案】4105【解析】由ab cos(A -B )=a 2+b 2-c 2,得cos(A -B )=2·a 2+b 2-c 22ab=2cos C =-2cos(A+B ),整理,得3cos A cos B =sin A sin B ,所以tan A tan B =3.又A =45°,所以tan A =1,tan B =3.由sin B cos B =3,sin 2B +cos 2B =1,得sin B =31010,cosB =1010.所以sin C =sin(A +B )=22⎝ ⎛⎭⎪⎫31010+1010=255.由正弦定理,得c =a sin C sin A =4105. 16.如图,AB →=3AD →,AC →=4AE →,BE 与CD 交于P 点,若AP →=mAB →+nAC →,则m =________,n =________.【答案】311 211【解析】因为AB →=3AD →,AC →=4AE →,且E 、P 、B 三点共线,D 、P 、C 三点共线,所以存在x ,y 使得AP →=xAE →+(1-x )AB →=14xAC →+(1-x )AB →.因为AP →=yAC →+(1-y )AD →=yAC →+13(1-y )AB →,所以⎩⎪⎨⎪⎧14x =y ,1-x =13(1-y ),解得x =811,y =211,所以AP →=14×811AC →+⎝ ⎛⎭⎪⎫1-811AB →=211AC →+311AB →=311AB →+211AC →.又因为AP →=mAB →+nAC →,所以m =311,n =211.四、解答题:本题共6小题,17题10分,其余小题为12分,共70分,解答应写出必要的文字说明、证明过程或演算步骤.17.已知复数z =m 2-m i(m ∈R),若|z |=2,且z 在复平面内对应的点位于第四象限. (1)求复数z ;(2)若z 2+az +b =1+i,求实数a ,b 的值.解:(1)∵z =m 2-m i,|z |=2,∴m 4+m 2=2,得m 2=1.又∵z 在复平面内对应的点位于第四象限,∴m =1,即z =1-i.(2)由(1)得z =1-i,∴z 2+az +b =1+i ⇒(1-i)2+a (1-i)+b =1+i.∴(a +b )-(2+a )i =1+i,∴⎩⎪⎨⎪⎧a +b =1,2+a =-1,解得a =-3,b =4.18.在①b +b cos C =2c sin B ,②S △ABC =2CA →·CB →,③(3b -a )cos C =c cos A ,三个条件中任选一个,补充在下面问题中,并解决问题.在△ABC 中,内角A ,B ,C 所对的边分别为a ,b ,c ,且满足________. (1)求cos C 的值;(2)若点E 在AB 上,且AE →=2EB →,EC =413,BC =3,求sin B .解:(1)若选①:因为b +b cos C =2c sin B ,由正弦定理可得sin B +sin B cos C =2sin C sin B .因为sin B ≠0,所以1+cos C =2sin C .联立⎩⎨⎧1+cos C =2sin C ,sin 2C +cos 2C =1,解得cos C =13,sin C =223,故cos C =13. 若选②:因为S △ABC =2CA →·CB →,所以12ab sin C =2ba cos C ,即sin C =22cos C >0,联立sin 2C +cos 2C =1,可得cos C =13.若选③:因为(3b -a )cos C =c cos A ,由正弦定理可得(3sin B -sin A )cos C =sin C cosA ,所以3sinB cosC =sin A cos C +sin C cos A =sin(A +C )=sin B .因为sin B ≠0,所以cos C =13.(2)由余弦定理可得cos ∠AEC =AE 2+EC 2-AC 22AE ·EC =49c 2+EC 2-b 243c ·EC ,cos ∠BEC =BE 2+EC 2-BC 22BE ·EC=19c 2+EC 2-a 223c ·EC ,因为cos ∠AEC +cos ∠BEC =0,所以49c 2+EC 2-b 243c ·EC +19c 2+EC 2-a 223c ·EC =0,即2c 2+9EC 2-3b 2-6a 2=0,则2c 2-3b 2=6a 2-9EC 2=6×9-9×419=13,①同时cos C =a 2+b 2-c 22ab =13,即b 2-c 2=2b -9,②联立①②可得b 2+4b -5=0,解得b =1,则c =22,故cos B =a 2+c 2-b 22ac =223,则sin B=13. 19.如图所示,在四棱锥MABCD 中,底面ABCD 为直角梯形,BC ∥AD ,∠CDA =90°,AD =4,BC =CD =2,△MBD 为等边三角形.(1)求证:BD ⊥MC ;(2)若平面MBD ⊥平面ABCD ,求三棱锥CMAB 的体积. (1)证明:取BD 中点O ,连接CO 、MO ,如图所示: ∵△MBD 为等边三角形,且O 为BD 中点,∴MO ⊥BD . 又BC =CD ,O 为BD 中点,∴CO ⊥BD .又MO ∩CO =O ,∴BD ⊥平面MCO . ∵MC ⊂平面MCO ,∴BD ⊥MC .(2)解:∵平面MBD ⊥平面ABCD ,且平面MBD ∩平面ABCD =BD ,MO ⊥BD , ∴MO ⊥平面ABCD .由(1)知MB =MD =BD =22,MO =MB 2-BO 2=6,S △ABC =12BC ·CD =2,∴V CMAB =V MABC =13×S △ABC ×MO =263.20.某冰糖橙为甜橙的一种,云南著名特产,以味甜皮薄著称.该橙按照等级可分为四类:珍品、特级、优级和一级(每箱有5 kg).某采购商打算采购一批该橙子销往省外,并从采购的这批橙子中随机抽取100箱,利用橙子的等级分类标准得到的数据如下表:等级 珍品 特级 优级 一级 箱数 40 30 10 20 售价/(元·kg -1)36302418(2)按照分层抽样的方法,从这100箱橙子中抽取10箱,试计算各等级抽到的箱数; (3)若在(2)抽取的特级品和一级品的箱子上均编上号放在一起,再从中抽取2箱,求抽取的2箱中两种等级均有的概率.解:(1)依题意可知,样本中的100箱不同等级橙子的平均价格为36×410+30×310+24×110+18×210=29.4(元/kg). (2)依题意,珍品抽到110×40=4(箱),特级抽到110×30=3(箱),优级抽到110×10=1(箱),一级抽到110×20=2(箱).(3)抽到的特级有3箱,编号为A 1,A 2,A 3,抽到的一级有2箱,编号为B 1,B 2. 从中抽取2箱,有(A 1,A 2),(A 1,A 3),(A 1,B 1),(A 1,B 2),(A 2,A 3),(A 2,B 1),(A 2,B 2),(A 3,B 1),(A 3,B 2),(B 1,B 2)共10种可能,两种等级均有的有(A 1,B 1),(A 1,B 2),(A 2,B 1),(A 2,B 2),(A 3,B 1),(A 3,B 2)共6种可能,∴所求概率p =610=35.21.已知向量a =(3cos ωx ,sin ωx ),b =(cos ωx ,cos ωx ),其中ω>0,记函数f (x )=a ·b .(1)若函数f (x )的最小正周期为π,求ω的值;(2)在(1)的条件下,已知△ABC 的内角A ,B ,C 对应的边分别为a ,b ,c ,若f ⎝ ⎛⎭⎪⎫A 2=3,且a=4,b +c =5,求△ABC 的面积.解:(1)f (x )=a ·b =3cos 2ωx +sin ωx ·cos ωx =3(cos 2ωx +1)2+sin 2ωx2=sin ⎝⎛⎭⎪⎫2ωx +π3+32. ∵f (x )的最小正周期为π,且ω>0,∴2π2ω=π,解得ω=1.(2)由(1)得f (x )=sin ⎝ ⎛⎭⎪⎫2x +π3+32.∵f ⎝ ⎛⎭⎪⎫A 2=3,∴sin ⎝ ⎛⎭⎪⎫A +π3=32. 由0<A <π,得π3<A +π3<4π3,∴A +π3=2π3,解得A =π3.由余弦定理a 2=b 2+c 2-2bc cos A ,得16=b 2+c 2-bc .联立b +c =5,得bc =3. ∴S △ABC =12bc sin A =12×3×32=334.22.“一带一路”是“丝绸之路经济带”和“21世纪海上丝绸之路”的简称.某市为了了解人们对“一带一路”的认知程度,对不同年龄和不同职业的人举办了一次“一带一路”知识竞赛,满分为100分(90分及以上为认知程度高).现从参赛者中抽取了x 人,按年龄分成5组,第一组:[20,25),第二组:[25,30),第三组:[30,35),第四组:[35,40),第五组:[40,45),得到如图所示的频率分布直方图,已知第一组有6人.(1)求x ;(2)求抽取的x 人的年龄的中位数(结果保留整数);(3)从该市大学生、军人、医务人员、工人、个体户,五种人中用分层抽样的方法依次抽取6人,42人,36人,24人,12人,分别记为1~5组,从5个按年龄分的组和5个按职业分的组中每组各选派1人参加知识竞赛,分别代表相应组的成绩,年龄组中1~5 组的成绩分别为93,96,97,94,90,职业组中1~5 组的成绩分别为93,98,94,95,90.①分别求5个年龄组和5个职业组成绩的平均数和方差;②以上述数据为依据,评价5个年龄组和5个职业组对“一带一路”的认知程度,并谈谈你的感想.解:(1)根据频率分布直方图得第一组的频率为0.01×5=0.05,∴6x=0.05,解得x =120.(2)设中位数为a ,则0.01×5+0.07×5+(a -30)×0.06=0.5,∴a =953≈32,则中位数为32.(3)①5个年龄组成绩的平均数为x 1=15×(93+96+97+94+90)=94,方差为s 21=15×[(-1)2+22+32+02+(-4)2]=6.5个职业组成绩的平均数为x 2=15×(93+98+94+95+90)=94,方差为s 22=15×[(-1)2+42+02+12+(-4)2]=6.8.②从平均数来看两组的认知程度相同,从方差来看年龄组的认知程度更稳定.。

外研版英语九年级上册Module 2 Public holidays模块综合检测(有听力文稿、答案含解析)

外研版英语九年级上册Module 2 Public holidays模块综合检测(有听力文稿、答案含解析)

Module 2 Public holidays模块综合检测(45分钟100分)第Ⅰ卷(共40分)Ⅰ. 听力(10分)(Ⅰ)录音中有五个句子, 听一遍后, 选择最佳答语(5分)1. A. Have a good trip. B. Thank you.C. Congratulations.2. A. Some times. B. Some time.C. Sometime.3. A. On the mountain. B. In the wild.C. Corn.4. A. On 4th July.B. On 1st October.C. On 10th September.5. A. Having dumplings.B. Wearing green clothes.C. Watching the Macy’s Thanksgiving Day Parade.(Ⅱ)录音中有一篇短文, 听两遍后, 完成下面的表格(5分)6. ______7. ______8. ______9. ______ 10. ______Ⅱ. 单项选择(10分)1. A lot of green trees ______on each side of the street.A. developB. increaseC. plantD. grow2. All living things ______the sun for their growth.A. depend ofB. fill withC. full ofD. depend on3.—Do you know when he ______tomorrow?—Don’t worry. I think as soon as he ______, he will give you a call.A. will come; will comeB. will come; comesC. comes; will comeD. comes; comes4.—Hey, man. You can’t cross the street now. You have to wait ______the traffic li ghts turn green. —Oh, sorry and thank you.A. whenB. afterC. untilD. while5.—How old is your daughter?— ______. We had a special party for her ______birthday yesterday.A. Nine; nineB. Nine; ninthC. Ninth; ninth6.—I will go to Harbin for my summer vacation. What about you?—I haven’t decided where ______.A. goB. wentC. goingD. to go7. —Do you know when the USA ______?—In 1776.A. foundB. was foundC. was foundedD. founded8. Mr. Yang never plays video games in his free time, ______?A. is heB. isn’t heC. does heD. doesn’t he9. —Haven’t you finished your homework?— ______. We finished it two hours ago.A. Yes, we haven’tB. No, we haveC. Yes, we haveD. No, we haven’t10. —Our team has just won the game. We all feel so excited now.— ______.A. Good luckB. Enjoy yourselvesC. Well doneD. And anything specialⅢ. 完形填空(10分)In the US, Mother’s Day is a holiday on the second Sunday inMay. It is a day when children give their 1 cards, presents andflowers.One of the best ways to celebrate Mother’s Day is to give yourmother the day off. Let her have a good rest while other members of thefamily do the 2 .Many families begin Mother’s Day with 3 in bed. Usually dad and the children will let mum 4 late as they go into the kitchen(厨房)and get ready 5 her favorite meal. A Mother’s Day breakfast can make anything your mum likes.After the food is cooked, keep everything nicely on a plate. Don’t forget to put the bottle 6 only one flower. It’s s pring here, the children can pick the nicest 7 from the garden outside. When everything is ready, carefully carry the plate and mum’s favorite books and newspapers up to her bedroom. Cards and small presents from the children can be put on the plate 8 it is given to mum in bed.Many families take mum out to her favorite restaurant for a meal. It is a good day to let your mum 9 and let her see what a wonderful 10 she has.1. A. mothers B. parents C. teachers D. friends2. A. housework B. washingC. workD. shopping3. A. breakfast B. lunch C. supper D. dinner4. A. eat B. sleep C. wash D. cook5. A. to B. for C. with D. by6. A. in B. on C. with D. of7. A. plate B. flower C. bottle D. food8. A. after B. when C. if D. before9. A. sleep B. eat C. cook D. rest10. A. family B. job C. restaurant D. flowerⅣ. 阅读理解(10分)On Thanksgiving Day, about 88 percent Americans will eat turkey. But one lucky turkey not only will not be eaten but also will become famous! Every year, turkey farmers present a turkey to the US president. But instead ofeating this turkey, the president gives it a “pardon”. The turkey is flown to Flo rida for a Thanksgiving Parade(游行). Then it lives on a farm for the rest of its life.Turkeys come from America and have been part of American culture for centuries. Benjamin Franklin even wanted the turkey to be America’s national bird.Turkeys that are kept on farms are large, awkward birds that can not fly. But wild turkeys are quite fast. They can fly at speeds up to 88 kilometers per hour. They can also run at 40 kilometers per hour.Turkeys don’t have ears. They hear by using a growth above their b eaks(尖喙). But their hearing is five times better than human hearing.Turkeys are such interesting birds—no wonder Benjamin Franklin wanted them to be America’s national birds!1. ______people eat turkey on Thanksgiving Day.A. A fewB. SomeC. MostD. All2. The underlined word“pardon”means ______.A. 赦免B. 赐死C. 礼物D. 原谅3. A wild turkey can fly at the speed of ______.A. 88 kilometers per hourB. 40 kilometers per hourC. as fast as a kept oneD. five times faster than man4. The turkey doesn’t have ______.A. eyesB. earsC. a mouthD. wings5. What’s the best title for this passage?A. The turkey on the farmB. The history of the turkeyC. How to keep the turkeyD. The star of thanksgiving第Ⅱ卷(共60分)Ⅴ. 词汇运用(20分)(Ⅰ)根据句意及首字母或汉语提示完成单词(10分)1. There is a big star and four smaller stars in our national f __________.2. There are four s __________in a year: spring, summer, autumn and winter.3. Tree Planting Day comes on the T __________of March.4. The singer was standing __________(在……之中)his fans.5. We are having a party to celebrate Betty’s __________(第二十个)birthday.(Ⅱ)用所给词的适当形式填空(10分)6. My uncle __________(teach)in this school since he was twenty years old.7.While __________(dance)on the stage, Amy felt very happy.8. I was just leaving when someone __________(knock)at the door.9. It’s silly of you __________(copy)others’ homework.10. With the boy __________(lead)the way, we found the house easily.Ⅵ. 完成句子(20分)1. 我们只可以休一天假吗?Shall we have only __________ __________ __________?2. 水上乐园是旅游度假的好地方。

外研版-英语-七上-Module2 My family.综合检测试题

外研版-英语-七上-Module2 My family.综合检测试题

模块综合检测(二)Module 2(45分钟100分)第Ⅰ卷(共40分)Ⅰ. 听力(10分)(Ⅰ)录音中有五个句子, 听一遍后, 选择最佳答语。

(5分)1. A. Yes, she is. B. No, they are.C. Yes, they are.2. A. Yes, he is. B. He is my uncle.C. She is my aunt.3. A. An apple.B. American.C. A manager.4. A. Yes, he is.B. Yes, she is.C. He is at school.5. A. He is eleven.B. He is Chinese.C. He is from China.(Ⅱ)录音中有一篇短文, 听两遍后, 补全图中所缺信息。

(5分)6. Tom’s7. Tom’s8. He’s a9. years old10. years oldⅡ. 单项选择(10分)1. I have aunt and she is worker.A. a; anB. an; aC. an; anD. a; a2. Jessica, your sister there?A. this isB. that isC. is thisD. is that3. This is room.A. Mina’s and Rona’sB. Mina and RonaC. Mina and Rona’sD. Mina’s and Rona4. —What are these?—are beautiful flowers.A. TheseB. ThoseC. ThisD. They5. —Why are you standing, Maggie?—I can’t see the blackboard. A tall boy is me.A. behindB. in front ofC. in the front ofD. next to6. Angela is a. She works in a hospital.A. farmerB. teacherC. workerD. nurse7. The Green family from America.A. isB. areC. amD. be8. These are.A. woman; policewomanB. womans; policewomansC. women; policewomanD. women; policewomen9. Bella is from and she is.A. America; AmericanB. American; AmericaC. America; AmericaD. American; American10. —Mr. Green, what’s your job?—. I’m an English teacher in a school.A. I’m fineB. I’m tenC. I’m a teacherD. I’m ChineseⅢ. 完形填空(10分)There are three people in my family, my parents and I.My name is Li Yan. I’m a middle school1. I amthirteen years old. I’m2China, so I can speak3. Ican speak a little English, too.My father is a teacher in a4. He can speak Chinese, English5 French. He teaches French. He likes6. He can swim and play table tennis.My7is a secretary. 8works in a factory. She9only speak Chinese. She likes music and she can sing and play the10.1. A. teacher B. doctor C. student D. worker2. A. from B. for C. of D. at3. A. Chinese B. FrenchC. EnglishD. China4. A. factory B. hotelC. hospitalD. university5. A. and B. but C. with D. or6. A. food B. sports C. songs D. colours7. A. father B. mother C. brother D. sister8. A. She B. He C. It D. They9. A. is B. can C. do D. does10. A. tennis B. footballC. basketballD. pianoⅣ. 任务型阅读(10分)My name is Anna King. I’m eleven years old. I have one brother. His name is Jason and he’s fourteen. I don’t have any sisters.I live with my brother, mother, father and grandma in asmall house in the north(北部)of England. My friends and I readbooks on Sundays. Do you like sports?I like playing table tennis. I have five pets(宠物)—two cats and three dogs, but my parents don’t like them. 根据短文内容, 回答下列问题。

外研版初中一年级单元测试题(Modules 2)

外研版初中一年级单元测试题(Modules 2)

模块综合检测(二)Module 2(45分钟100分)第Ⅰ卷(共40分)Ⅰ. 听力(10分)(Ⅰ)录音中有五个句子, 听一遍后, 选择最佳答语。

(5分)1. A. Yes, she is. B. No, they are.C. Yes, they are.2. A. Yes, he is. B. He is my uncle.C. She is my aunt.3. A. An apple.B. American.C. A manager.4. A. Yes, he is.B. Yes, she is.C. He is at school.5. A. He is eleven.B. He is Chinese.C. He is from China.(Ⅱ)录音中有一篇短文, 听两遍后, 补全图中所缺信息。

(5分) 6. Tom’s7. Tom’s8. He’s a9. years old10. years oldⅡ. 单项选择(10分)1. I have aunt and she is worker.A. a; anB. an; aC. an; anD. a; a2. Jessica, your sister there?A. this isB. that isC. is thisD. is that3. This is room.A. Mina’s and Rona’sB. Mina and RonaC. Mina and Rona’sD. Mina’s and Rona4. —What are these?—are beautiful flowers.A. TheseB. ThoseC. ThisD. They5. —Why are you standing, Maggie?—I can’t see the blackboard. A tall boy is me.A. behindB. in front ofC. in the front ofD. next to6. Angela is a. She works in a hospital.A. farmerB. teacherC. workerD. nurse7. The Green family from America.A. isB. areC. amD. be8. These are.A. woman; policewomanB. womans; policewomansC. women; policewomanD. women; policewomen9. Bella is from and she is.A. America; AmericanB. American; AmericaC. America; AmericaD. American; American10. —Mr. Green, what’s your job?—. I’m an English teacher in a school.A. I’m fineB. I’m tenC. I’m a teacherD. I’m ChineseⅢ. 完形填空(10分)There are three people in my family, my parents and I.My name is Li Yan. I’m a middle school1. I am thirteen years old. I’m2China, so I can speak3. I can speak a little English, too.My father is a teacher in a4. He can speak Chinese, English5French. He teaches French. He likes6. He can swim and play table tennis.My7is a secretary. 8works in a factory. She9only speak Chinese. She likes music and she can sing and play the10.1. A. teacher B. doctor C. student D. worker2. A. from B. for C. of D. at3. A. Chinese B. FrenchC. EnglishD. China4. A. factory B. hotelC. hospitalD. university5. A. and B. but C. with D. or6. A. food B. sports C. songs D. colours7. A. father B. mother C. brother D. sister8. A. She B. He C. It D. They9. A. is B. can C. do D. does10. A. tennis B. footballC. basketballD. pianoⅣ. 任务型阅读(10分)My name is Anna King. I’m eleven years old. I have one brother. His name is Jason and he’s fourteen. I don’t have any sisters.I live with my brother, mother, father and grandma in a small house in the north(北部)of England. My friends and I read books on Sundays. Do you like sports?I like playing table tennis. I have five pets(宠物)—two cats and three dogs, but my parents don’t like them.根据短文内容, 回答下列问题。

人教版试题试卷高中生物 模块综合检测新人教版必修2

人教版试题试卷高中生物 模块综合检测新人教版必修2

高中生物模块综合检测新人教版必修2(满分:100分时间:60分钟)一、选择题(每小题2分,共40分)1.某生物兴趣小组为了验证孟德尔遗传规律的正确性,设计了相应的实验方案,要求选择不同的生物分别进行验证,请预测他们将不会选择的生物是( )A.豌豆B.果蝇C.蓝藻D.番薯解析:孟德尔遗传规律适用于进行有性生殖的真核生物,蓝藻属于原核生物。

答案:C2.下列说法正确的是( )A.两个个体之间的交配就是杂交B.植物的自花受粉属于遗传学上的自交C.只有植物才能进行自交D.伴性遗传的正反交结果相同解析:杂交指的是两个基因型不同的个体之间的交配,而自交是指同一个体或不同个体但为同一基因型的个体间的交配;伴性遗传的正反交结果往往是不同的,如母本为显性(X A X A),父本为隐性(X a Y),杂交后代雌雄性都表现显性性状;若母本为隐性(X a X a),父本为显性(X A Y)。

杂交后代雌性均表现显性性状,雄性均表现隐性性状。

答案:B3.玉米果皮黄色(PP)对白色(pp)为显性,非甜味胚乳(SS)对甜味胚乳(ss)为显性,黄色胚乳(GG)对白色胚乳(gg)为显性,三对基因分别位于不同的同源染色体上。

现有甲、乙、丙、丁四个品系的纯种玉米,其基因型如下表所示:材料( )A.甲、丙、丁B.乙、丙、丁C.甲、乙、丁D.甲、乙、丙解析:若用杂交育种的方式培育出ppggss新类型,必须将所有的隐性基因集中在一起,因此只有利用乙、丙、丁三个品系作育种材料才可以做到这一点。

答案:B4.豚鼠中有几个等位基因决定毛色。

C b_黑色;C c_乳白色;C s_银色;C z_白化。

分析表中数据,找出能反映不同等位基因间显隐性关系的正确顺序( )A.C bC.C c>C z>C b>C s D.C b>C z>C s>C c解析:由交配1,黑×黑→黑∶白化=3∶1,说明黑对白化为显性,白化为隐性性状,其基因型为C z C z,两个黑色亲本均为杂合体,基因型均为C b C z;由交配2,黑×白化→黑∶银=1∶1,为测交,亲本黑色为杂合体,基因型为C b C s,黑对银为显性;由交配3,乳白×乳白→乳白∶白化=3∶1,说明乳白对白化为显性,亲本乳白都是杂合体,基因型均为C c C z;由交配4,银×乳白→银∶乳白∶白化=2∶1∶1,说明亲本银与乳白都是杂合体,携带有隐性白化基因,也说明银对乳白为显性,综上所述,各基因显隐性关系为C b>C s>C c>C z。

【苏教版】高中数学必修5同步辅导与检测:模块综合检测卷(二)(含答案)

【苏教版】高中数学必修5同步辅导与检测:模块综合检测卷(二)(含答案)

模块综合检测卷(二)(测试时间:120分钟评价分值:150分)一、选择题(每小题共12个小题,每小题共5分,共60分,在每小题给出的四个选项中,只有一项符合题目要求)1.对于任意实数a,b,c,d命题:①若a>b,c≠0,则ac>bc;②若a<b,则ac2>bc2;③若ac2>bc2,则a>b.其中真命题的个数是()A.0B.1C.2D.3解析:当c<0时,①不正确;当c=0时,②不正确;只有③正确.答案:B2.历届现代奥运会召开时间表如下:A.29 B.30 C.31 D.32解析:由题意得,历届现代奥运会召开时间构成以1 896为首项,4为公差的等差数列,所以2 016=1 896+(n-1)·4,解得n=31.答案:C3.若点(x,y)位于曲线y=|x|与y=2所围成的封闭区域,则2x -y的最小值为()A .-6B .-2C .0D .2解析:y =|x |与y =2的图象围成一个三角形区域,如图所示,3个顶点的坐标分别是(0,0),(-2,2),(2,2).在封闭区域内平移直线y =2x ,在点(-2,2)时,2x -y =-6取最小值.答案:A4.如图所示,设A ,B 两点在河的两岸,一测量者在A 所在的同侧河岸边选定一点C ,测出AC 的长为50 m ,∠ACB =45°,∠CAB =105°后,就可以计算出A ,B 两点的距离为()A .50 2 mB .50 3 mC .25 2 mD.2522m解析:由正弦定理得AB sin ∠ACB =ACsin ∠ABC ,又因为∠ABC =180°-45°-105°=30°, 所以AB =AC sin ∠ACB sin ∠ABC=50×2212=502(m).答案:A5.等比数列{a n }前n 项的积为T n ,若a 3a 6a 18是一个确定的常数,那么数列T 10,T 13,T 17,T 25中也是常数的项是( )A .T 10B .T 13C .T 17D .T 25解析:因为a 3·a 6·a 18=a 9q 6·a 9q 3·a 9·q 9=a 39是一个确定常数,所以a 9为确定的常数.T 17=a 1·a 2·…·a 17=(a 9)17,所以选C. 答案:C6.以原点为圆心的圆全部都在平面区域⎩⎪⎨⎪⎧x -3y +6≥0,x -y +2≥0内,则圆面积的最大值为( )A.18π5B.9π5C .2πD .π 解析:作出不等式组表示的平面区域如图所示,由图可知,最大圆的半径为点(0,0)到直线x -y +2=0的距离, 即|0-0+2|12+(-1)2=2,所以圆面积的最大值为π·(2)2=2π. 答案:C7.已知三角形的两边长分别为4,5,它们夹角的余弦值是方程2x 2+3x -2=0的根,则第三边长是( )A.20B.21C.22D.61解析:设长为4,5的两边的夹角为θ,由2x 2+3x -2=0得x =12或x =-2(舍),所以cos θ=12,所以第三边长为 42+52-2×4×5×12=21.答案:B8.已知数列{a n }的前n 项和S n =n 2-9n ,第k 项满足5<a k <8,则k 等于( )A .6B .7C .8D .9解析:a n =⎩⎨⎧S 1,n =1,S n -S n -1,n ≥2=⎩⎨⎧-8,n =1,-10+2n ,n ≥2.因为n =1时适合a n =2n -10, 所以a n =2n -10(n ∈N *). 因为5<a k <8,所以5<2k -10<8. 所以152<k <9.又因为k ∈N *,所以k =8.答案:C9.函数f (x )=1x ln(x 2-3x +2+-x 2-3x +4)的定义域为( )A .(-∞,-4)∪[2,+∞)B .(-4,0)∪(0,1)C .[-4,0)∪(0,1]D .[-4,0)∪(0,1)解析:函数f (x )有定义等价于⎩⎪⎨⎪⎧x ≠0,x 2-3x +2≥0,-x 2-3x +4>0或⎩⎪⎨⎪⎧x ≠0,x 2-3x +2>0,-x 2-3x +4≥0,解得-4≤x <0或0<x <1.答案:D10.设△ABC 的内角A ,B ,C 所对的边分别为a ,b ,c ,若b cos C +c cos B =a sin A ,则△ABC 的形状为( )A .锐角三角形B .直角三角形C .钝角三角形D .不确定解析:因为b cos C +c cos B =b ·b 2+a 2-c 22ab +c ·c 2+a 2-b 22ac=b 2+a 2-c 2+c 2+a 2-b 22a=2a 22a =a =a sin A , 所以sin A =1.因为A ∈(0,π),所以A =π2,即△ABC 是直角三角形.答案:B11.在数列{x n }中,2x n =1x n -1+1x n +1(n ≥2),且x 2=23,x 4=25,则x 10等于( )A.211B.16C.112D.15解析:由已知可得⎩⎨⎧⎭⎬⎫1x n 成等差数列,而1x 2=32,1x 4=52,所以2d =52-32=1,即d =12.故1x 10=1x 1+(10-1)d =⎝ ⎛⎭⎪⎫32-12+9×12=112.所以x 10=211. 答案:A12.已知x >0,y >0,且2x +1y =1,若x +2y >m 2+2m 恒成立,则实数m 的取值范围是( )A .(-∞,-2]∪[4,+∞)B .(-∞,-4]∪[2,+∞)C .(-2,4)D .(-4,2)解析:因为x >0,y >0且2x +1y =1,所以x +2y =(x +2y )⎝ ⎛⎭⎪⎫2x +1y =4+4y x +xy ≥4+24y x ·x y =8,当且仅当4y x =x y,即x =4,y =2时取等号, 所以(x +2y )min =8.要使x +2y >m 2+2m 恒成立, 只需(x +2y )min >m 2+2m 恒成立, 即8>m 2+2m ,解得-4<m <2. 答案:D二、填空题(本大题共4小题,每小题5分,共20分.把答案填在题中横线上)13.若函数f (x )=⎩⎪⎨⎪⎧x 2+1,x >0,-x ,x ≤0.则不等式f (x )<4的解集是________.解析:不等式f (x )<4等价于⎩⎨⎧x >0,x 2+1<4或⎩⎨⎧x ≤0,-x <4,即0<x <3或-4<x ≤0.因此,不等式f (x )<4的解集是(-4,3). 答案:(-4,3)14.已知数列{a n }的通项公式为a n =2n -2004,则这个数列的前________项和最小.解析:设a n =2n -2 004的对应函数为y =2x -2 004.易知函数y =2x -2 004在R 上是增函数,且当y =0时,x =1 002. 因此,数列{a n }是单调递增数列,且当1≤n ≤1 002时,a n ≤0;当n >1 002时,a n >0. 所以数列{a n }的前1 001项或前1 002项的和最小. 答案:1 001或1 002.15.在△ABC 中,内角A ,B ,C 的对边分别是a ,b ,c ,若a 2-b 2=3bc ,sin C =23sin B ,则A 等于________.解析:由正弦定理,且sin C =23sin B ⇒c =23b .又a 2-b 2=3bc ,故由余弦定理得cos A =b 2+c 2-a 22bc =b 2+c 2-(b 2+3bc )2bc =c 2-3bc 2bc =(23b )2-3b ·23b 2b ·23b=32,所以A =30°. 答案:30°16.(2015·山东卷)定义运算“⊗”:x ⊗y =x 2-y 2xy (x ,y ∈R ,xy ≠0).当x >0,y >0时,x ⊗y +(2y )⊗x 的最小值为________.解析:因为x ⊗y =x 2-y 2xy ,所以(2y )⊗x =4y 2-x 22xy .又x >0,y >0,故x ⊗y +(2y )⊗x =x 2-y 2xy +4y 2-x 22xy =x 2+2y 22xy ≥22xy2xy =2,当且仅当x =2y 时,等号成立. 答案: 2三、解答题(本大题共6小题,共70分.解答题应写出文字说明、证明过程或推演步骤)17.(本小题满分10分)(2015·江苏卷)在△ABC 中,已知AB =2,AC =3,A =60°.(1)求BC 的长; (2)求sin 2C 的值.解:(1)由余弦定理知,BC 2=AB 2+AC 2-2AB ·AC ·cos A =4+9-2×2×3×12=7,所以BC =7.(2)由正弦定理知,AB sin C =BCsin A ,所以sin C =ABBC ·sin A =2sin 60°7=217.因为AB <BC ,所以C 为锐角, 则cos C =1-sin 2C =1-37=277. 因此sin 2C =2sin C ·cos C =2·217·277=437.18.(本小题满分12分)设{a n }是公比为正数的等比数列,a 1=2,a 3=a 2+4.(1)求{a n }的通项公式;(2)设{b n }是首项为1,公差为2的等差数列,求数列{a n +b n }的前n 项和S n .解:(1)设q 为等比数列{a n }的公比,则由a 1=2,a 3=a 2+4得2q 2=2q +4,即q 2-q -2=0,解得q =2或q =-1(舍去),因此q =2,所以{a n }的通项为a n =2·2n -1=2n (n ∈N +).(2)S n =2(1-2n )1-2+n ·1+n (n -1)2·2=2n +1+n 2-2.19.(本小题满分12分)在△ABC 中,角A ,B ,C 所对的边分别为a ,b ,c .已知△ABC 的周长为2+1,且sin A +sin B =2sin C .(1)求边c 的长;(2)若△ABC 的面积为16sin C ,求C 的大小.解:(1)由sin A +sin B =2sin C 及正弦定理可知: a +b =2c .又因为a +b +c =2+1,所以2c +c =2+1,从而c =1. (2)三角形面积S =12ab sin C =16sin C ,所以ab =13,a +b = 2.因为cos C =a 2+b 2-c 22ab =(a +b )2-2ab -12ab =12,又因为0<C <π,所以C =π3.20.(本小题满分12分)如图所示,公园有一块边长为2的等边三角形ABC 的边角地,现修成草坪,图中DE 把草坪分成面积相等的两部分,点D 在AB 上,点E 在AC 上.(1)设AD =x (x ≥0),ED =y ,求用x 表示y 的函数关系式; (2)如果DE 是灌溉水管,为节约成本,希望它最短,DE 的位置应在哪里?如果DE 是参观线路,则希望它最长,DE 的位置又在哪里?解:S △ABC =34×4=3,所以S △ADE =12·x ·AE · sin 60°=32,所以x ·AE =2,所以AE =2x≤2,所以x ≥1.(1)在△ADE 中,y 2=x 2+⎝ ⎛⎭⎪⎫2x 2-2·x ·2x ·cos 60°=x 2+4x 2-2,所以y =x 2+4x2-2(1≤x ≤2).(2)令t =x 2,则1≤t ≤4,所以y =t +4t-2(1≤t ≤4). 当t =2,即x =2时,即当AD =2,AE =2时,DE 最短为2;当t =1或4,即AD =2,AE =1或AD =1,AE =2时,DE 最长为 3.21.(本小题满分12分)已知函数f (x )=x 2-ax (a ∈R), (1)若不等式f (x )>a -3的解集为R ,求实数a 的取值范围; (2)设x >y >0,且xy =2,若不等式f (x )+f (y )+2ay ≥0恒成立,求实数a 的取值范围.解:(1)不等式f (x )>a -3的解集为R ,即不等式x 2-ax -a +3>0的解集为R ,所以Δ=a 2+4(a -3)<0恒成立,即a 2+4a -12<0恒成立,所以-6<a <2.(2)不等式f (x )+f (y )+2ay ≥0恒成立,即不等式x 2-ax +y 2-ay +2ay ≥0恒成立,所以x 2+y 2≥a (x -y )恒成立.所以实数a 的取值范围为(-∞,4].22.(本小题满分12分)已知公差大于0的等差数列{a n }的前n 项和为S n ,且满足:a 3a 4=117,a 2+a 5=22.(1)求数列{a n }的通项公式a n ;(2)若数列{b n }是等差数列,且b n =S n n +c,求非零常数c ; (3)若(2)中的{b n }的前n 项和为T n ,求证:2T n -3b n -1>64b n (n +9)b n +1. (1)解:{a n }为等差数列,因为a 3+a 4=a 2+a 5=22, 又因为a 3·a 4=117,所以a 3,a 4是方程n 2-22x +117=0的两个根. 又因为公差d >0,所以a 3<a 4,所以a 3=9,a 4=13.所以⎩⎨⎧a 1+2d =9,a 1+3d =13即⎩⎨⎧a 1=1,d =4,所以a n =4n -3.(2)解:由(1)知,S n =n ·1+n (n -1)2·4=2n 2-n , 所以b n =S n n +c =2n 2-n n +c ,所以b 1=11+c ,b 2=62+c, b 3=153+c. 因为{b n }是等差数列,所以2b 2=b 1+b 3,所以2c 2+c =0,所以c =-12或c =0(舍去). (3)证明:由(2)得b n =2n 2-n n -12=2n ,T n =2n +n (n -1)·22=n 2+n ,2T n -3b n -1=2(n 2+n )-3(2n -2)=2(n -1)2+4≥4,当n =1时取“=”,又n >1,所以取不到“=”,即2T n -3b n -1>4.64b n (n +9)b n +1=64×2n (n +9)·2(n +1)=64n n 2+10n +9=64n +9n+10≤4,当n =3时取“=”.上述两式中“=”不可能同时取到,所以2T n -3b n -1>64b n (n +9)b n +1.。

2022-2021年《金版学案》数学·必修2(苏教版):模块综合检测卷(二)

2022-2021年《金版学案》数学·必修2(苏教版):模块综合检测卷(二)

模块综合检测卷(二)(时间:120分钟 满分:150分)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.若PQ 是圆x 2+y 2=9的弦,PQ 的中点是M (1,2),则直线PQ 的方程是( ) A .x +2y -3=0 B .x +2y -5=0 C .2x -y +4=0D .2x -y =0解析:由题意知k OM =2-01-0=2,所以k PQ =-12.所以直线PQ 的方程为: y -2=-12(x -1),即:x +2y -5=0. 答案:B2.直线l 通过两直线7x +5y -24=0和x -y =0的交点,且点(5,1)到l 的距离为10,则l 的方程是( )A .3x +y +4=0B .3x -y +4=0C .3x -y -4=0D .x -3y -4=0解析:由⎩⎨⎧7x +5y -24=0,x -y =0,得交点(2,2).设l 的方程为y -2=k (x -2), 即kx -y +2-2k =0, 所以|5k -1+2-2k |k 2+(-1)2=10,解得k =3.所以l 的方程为3x -y -4=0. 答案:C3.在坐标平面xOy 上,到点A (3,2,5),B (3,5,1)距离相等的点有( ) A .1个 B .2个 C .不存在D .很多个解析:在坐标平面xOy 内,设点P (x ,y ,0), 依题意得(x -3)2+(y -2)2+25=(x -3)2+(y -5)2+1,整理得y =-12,x ∈R ,所以符合条件的点有很多个. 答案:D4.已知直线l :x +ay -1=0(a ∈R)是圆C :x 2+y 2-4x -2y +1=0的对称轴.过点A (-4,a )作圆C 的一条切线,切点为B ,则|AB |=( )A .2B .42C .6D .210 解析:圆C 的标准方程为(x -2)2+(y -1)2=4, 圆心为C (2,1),半径为r =2,因此2+a ·1-1=0,a =-1,即A (-4,-1), |AB |=|AC |2-r 2=(-4-2)2+(-1-1)2-4=6.答案:C5.已知两点A (-2,0),B (0,2).点C 是圆x 2+y 2-2x =0上任意一点,则△ABC 面积的最小值是( )A .3- 2B .3+ 2C .3-22D.3-22解析:l AB :x -y +2=0,圆心(1,0)到l 的距离d =|3|2=32,所以AB 边上的高的最小值为32-1. 所以S min =12×22×⎝ ⎛⎭⎪⎫32-1=3- 2.答案:A6.若点P (-4,-2,3)关于坐标平面xOy 及y 轴的对称点的坐标分别是(a ,b ,c ),(e ,f ,d ),则c 与e 的和为( )A .7B .-7C .-1D .1 答案:D7.一个多面体的三视图如左下图所示,则该多面体的体积为( )A.233B.476C .6D .7 解析:该几何体是正方体去掉两个角所形成的多面体,如图所示,其体积为V =2×2×2-2×13×12×1×1×1=233.答案:A8.如图所示,在正方体ABCD -A 1B 1C 1D 1中,E ,F ,G ,H 分别为AA 1,AB ,BB 1,B 1C 1的中点,则异面直线EF 与GH 所成的角等于( )A .45°B .60°C .90°D .120°解析:如图所示,取A 1B 1的中点M ,连接GM ,HM .由题意易知EF ∥GM ,且△GMH 为正三角形.所以异面直线EF 与GH 所成的角即为GM 与GH 的夹角∠HGM .而在正三角形GMH 中∠HGM =60°.答案:B9.若曲线C 1:x 2+y 2-2x =0与曲线C 2:y (y -mx -m )=0有四个不同的交点,则实数m 的取值范围是( )A.⎝⎛⎭⎪⎫-33,33B.⎝ ⎛⎭⎪⎫-33,0∪⎝ ⎛⎭⎪⎫0,33C.⎣⎢⎡⎦⎥⎤-33,33D.⎝ ⎛⎭⎪⎫-∞,-33∪⎝ ⎛⎭⎪⎫33,+∞解析:C 1:(x -1)2+y 2=1, C 2:y =0或y =mx +m =m (x +1).如图所示,当m =0时,C 2:y =0,此时C 1与C 2明显只有两个交点;当m ≠0时,要满足题意,需圆(x -1)2+y 2=1与直线y =m (x +1)有两交点,当圆与直线相切时,m =±33,即直线处于两切线之间时满足题意, 则-33<m <0或0<m <33.答案:B10.已知实数x ,y 满足x 2+y 2=4,则S =x 2+y 2-6x -8y +25的最大值和最小值分别为( )A .49,9B .7,3 C.7, 3D .7, 3解析:函数S =x 2+y 2-6x -8y +25化为(x -3)2+(y -4)2=S ,它是以点C (3,4)为圆心,半径为S 的圆,当此圆和已知圆x 2+y 2=4外切和内切时,对应的S 的值即为要求的最小值和最大值.当圆C 与已知圆x 2+y 2=4相外切时,对应的S 为最小值,此时两圆圆心距等于两圆半径之和,即5=S min +2,求得S min =9;当圆C 与已知圆x 2+y 2=4相内切时,对应的S 为最大值,此时两圆圆心距等于两圆半径之差,即5=S max -2,求得S max =49.答案:A11.圆x 2+y 2+2x -4y +1=0关于直线2ax -by +2=0(a ,b ∈R)对称,则ab 的取值范围是( )A.⎝ ⎛⎦⎥⎤-∞,14 B.⎝ ⎛⎦⎥⎤0,14 C.⎝ ⎛⎭⎪⎫-14,0 D.⎝⎛⎭⎪⎫-∞,14 解析:圆x 2+y 2+2x -4y +1=0关于直线2ax -by +2=0(a ,b ∈R)对称,则圆心在直线上,求得a +b =1,ab =a (1-a )=-a 2+a =-⎝ ⎛⎭⎪⎫a -122+14≤14,ab 的取值范围是⎝ ⎛⎦⎥⎤-∞,14,故选A. 答案:A12.已知半径为1的动圆与圆(x -5)2+(y +7)2=16相切,则动圆圆心的轨迹方程是( )A .(x -5)2+(y +7)2=25B .(x -5)2+(y +7)2=17或(x -5)2+(y +7)2=15C .(x -5)2+(y +7)2=9D .(x -5)2+(y +7)2=25或(x -5)2+(y +7)2=9解析:设动圆圆心为P ,已知圆的圆心为A (5,-7),则外切时|PA |=5,内切时|PA |=3,所以P 的轨迹为以A 为圆心,3或5为半径的圆,选D.答案:D二、填空题(本大题共4小题,每小题5分,共20分.将正确答案填在题中的横线上)13.若函数y =ax +8与y =-12x +b 的图象关于直线y =x 对称,则a +b =________.解析:直线y =ax +8关于y =x 对称的直线方程为x =ay +8, 所以x =ay +8与y =-12x +b 为同始终线,故得⎩⎨⎧a =-2,b =4,所以a +b =2.答案:214.圆x 2+(y +1)2=3绕直线kx -y -1=0旋转一周所得的几何体的表面积为________.解析:由题意,圆心为(0,-1),又直线kx -y -1=0恒过点(0,-1),所以旋转一周所得的几何体为球,球心即为圆心,球的半径即是圆的半径,所以S =4π(3)2=12π.答案:12π15.过点(3,1)作圆(x -2)2+(y -2)2=4的弦,其中最短弦的长为________. 解析:借助圆的几何性质,确定圆的最短弦的位置,利用半径、弦心距及半弦长的关系求弦长.设A (3,1),易知圆心C (2,2),半径r =2, 当弦过点A (3,1)且与|CA |=(2-3)2+(2-1)2= 2.所以半弦长=r 2-|CA |2=4-2= 2.所以最短弦长为2 2. 答案:2216.若某几何体的三视图(单位:cm)如图所示,则此几何体的体积等于________cm 3.解析:由三视图可知该几何体为一个直三棱柱被截去了一个小三棱锥,如图所示.三棱柱的底面为直角三角形,且直角边长分别为3和4,三棱柱的高为5,故其体积V 1=12×3×4×5=30(cm 3),小三棱锥的底面与三棱柱的上底面相同,高为3,故其体积V 2=13×12×3×4×3=6(cm 3),所以所求几何体的体积为30-6=24(cm 3). 答案:24三、解答题(本大题共6小题,共70分.解答时应写出必要的文字说明、证明过程及演算步骤)17.(本小题满分10分)已知两条直线l 1:mx +8y +n =0和l 2:2x +my -1=0,试确定m ,n 的值,使:(1)l 1与l 2相交于点(m ,-1); (2)l 1∥l 2;(3)l 1⊥l 2,且l 1在y 轴上的截距为-1. 解:(1)由于l 1与l 2相交于点(m ,-1), 所以点(m ,-1)在l 1,l 2上.将点(m ,-1)代入l 2,得2m -m -1=0,解得m =1. 又由于m =1,把(1,-1)代入l 1,所以n =7. 故m =1,n =7.(2)要使l 1∥l 2,则有⎩⎨⎧m 2-16=0,m ×(-1)-2n ≠0,解得⎩⎨⎧m =4,n ≠-2或⎩⎨⎧m =-4,n ≠2.(3)要使l 1⊥l 2,则有m ·2+8×m =0,得m =0. 则l 1为y =-n8,由于l 1在y 轴上的截距为-1,所以-n8=-1,即n =8.故m =0,n =8.18.(本小题满分12分)有一块扇形铁皮OAB ,∠AOB =60°,OA =72 cm ,要剪下来一个扇环形ABCD ,作圆台容器的侧面,并且在余下的扇形OCD 内能剪下一块与其相切的圆形使它恰好作圆台容器的下底面(大底面).(1)AD 应取多长? (2)容器的容积为多大?解:(1)如图①和图②所示,设圆台上、下底面半径分别为r ,R ,AD =x ,则OD =72-x .图① 图②由题意得⎩⎪⎨⎪⎧2πR =60×π180·72,2πr =60×π180(72-x ),72-x =3R .所以R =12,r =6,x =36, 所以AD =36 cm. (2)圆台所在圆锥的高H =722-R 2=1235,圆台的高h =H2=635,小圆锥的高h ′=635,所以V 容=V 大锥-V 小锥=13πR 2H -13πr 2h ′=50435π.19.(本小题满分12分)如图所示,在三棱锥S -ABC 中,平面SAB ⊥平面SBC ,AB ⊥BC ,AS =AB .过A 作AF ⊥SB ,垂足为F ,点E ,G 分别是棱SA ,SC 的中点.求证:(1)平面EFG ∥平面ABC ; (2)BC ⊥SA .证明:(1)由于AS=AB,AF⊥SB,垂足为F,所以F是SB的中点.又由于E是SA的中点,所以EF∥AB.由于EF⊄平面ABC,AB⊂平面ABC,所以EF∥平面ABC.同理EG∥平面ABC.又EF∩EG=E,所以平面EFG∥平面ABC.(2)由于平面SAB⊥平面SBC,且交线为SB,又AF⊂平面SAB,AF⊥SB,所以AF⊥平面SBC.由于BC⊂平面SBC,所以AF⊥BC.又由于AB⊥BC,AF∩AB=A,AF⊂平面SAB,AB⊂平面SAB.所以BC⊥平面SAB.由于SA⊂平面SAB,所以BC⊥SA.20.(本小题满分12分)已知圆x2+y2=4上肯定点A(2,0),B(1,1)为圆内一点,P,Q为圆上的动点.(1)求线段AP中点的轨迹方程;(2)若∠PBQ=90°,求线段PQ中点的轨迹方程.解:(1)设AP中点为M(x,y),由中点坐标公式可知,P点坐标为(2x-2,2y).由于P点在圆x2+y2=4上,所以(2x-2)2+(2y)2=4.故线段AP中点的轨迹方程为(x-1)2+y2=1.(2)设PQ的中点为N(x,y).在Rt△PBQ中,|PN|=|BN|,设O为坐标原点,连接ON,则ON⊥PQ,所以|OP|2=|ON|2+|PN|2=|ON|2+|BN|2.所以x2+y2+(x-1)2+(y-1)2=4.故线段PQ中点的轨迹方程为x2+y2-x-y-1=0.21.(本小题满分12分)如图所示,在三棱柱ABC-A1B1C1中,侧棱垂直于底面,AB⊥BC,AA1=AC=2,BC=1,E,F分别是A1C1,BC的中点.(1)求证:平面ABE⊥平面B1BCC1;(2)求证:C1F∥平面ABE;(3)求三棱锥E-ABC的体积.(1)证明:在三棱柱ABC-A1B1C1中,BB1⊥底面ABC,所以BB1⊥AB.又由于AB⊥BC,所以AB⊥平面B1BCC1.又AB⊂平面ABE,所以平面ABE⊥平面B1BCC1.(2)证明:如图所示,取AB的中点G,连接EG,FG.由于E,F分别是A1C1,BC的中点,所以FG∥AC,且FG=12AC.由于AC∥A1C1,且AC=A1C1,所以FG∥EC1,且FG=EC1,所以四边形FGEC1为平行四边形.所以C1F∥EG.又由于EG⊂平面ABE,C1F⊄平面ABE,所以C1F∥平面ABE.(3)解:由于AA1=AC=2,BC=1,AB⊥BC,所以AB=AC2-BC2= 3.所以三棱锥E-ABC的体积V=13S△ABC·AA1=13×12×3×1×2=33.22.(本小题满分12分)已知过原点的动直线l与圆C1:x2+y2-6x+5=0相交于不同的两点A,B.(1)求圆C1的圆心坐标;(2)求线段AB的中点M的轨迹C的方程;(3)是否存在实数k,使得直线L:y=k(x-4)与曲线C只有一个交点?若存在,求出k的取值范围;若不存在,说明理由.解:(1)圆C1的标准方程为(x-3)2+y2=4.所以圆C1的圆心坐标为(3,0).(2)设动直线l的方程为y=kx.联立⎩⎨⎧(x-3)2+y2=4,y=kx⇒(k2+1)x2-6x+5=0,则Δ=36-4(k2+1)×5>0⇒k2<45.设A,B两点坐标为(x1,y1),(x2,y2),则x1+x2=6k2+1⇒AB中点M的轨迹C的参数方程为⎩⎪⎨⎪⎧x=3k2+1,y=3kk2+1⎝⎛⎭⎪⎫-255<k<255,即轨迹C的方程为⎝⎛⎭⎪⎫x-322+y2=94,53<x≤3.(3)联立⎩⎨⎧x2-3x+y2=0,y=k(x-4)⇒(1+k2)x2-(3+8k)x+16k2=0.令Δ=(3+8k)2-4(1+k2)16k2=0⇒k=±34.又由于轨迹C(即圆弧)的端点⎝⎛⎭⎪⎫53,±253与点(4,0)打算的直线斜率为±257.所以当直线y=k(x-4)与曲线C只有一个交点时,k的取值范围为⎝ ⎛⎭⎪⎫-257,257∪⎝ ⎛⎭⎪⎫-34,34.。

外研英语必修2:模块综合检测(二)

外研英语必修2:模块综合检测(二)

Ⅰ.语言知识及应用(共两节,满分45分)第一节完形填空(共15小题;每小题2分,满分30分)阅读下面短文,掌握其大意,然后从1~15各题所给的A、B、C和D项中,选出最佳选项。

Richard Rice,a fast talking man paced up and down in front of freshmen debate class,__1__us about his high expectations.We were special,he declared on our first day at Oak Park High School.But there would be no shortcuts to success.Only those who worked hard would shine. Suddenly Mr.Rice__2__in mid sentence and stared at me.“Y ou know,”he said,“Y ou’re black!”Somehow,I know he wasn’t trying to hurt me.Mr.Rice was not a(n)__3__teacher.I entered high school not__4__quite sure what debate was.I left his class four years later as an outstanding debater.Even today,I’m not sure what__5__such a great teacher of him.He always said__6__he was thinking.He was__7__and he’d marc h out of the classroom angrily if he thought a student was giving__8__his effort.The worst thing with us was to be taken no notice of.__9__,being torn apart by Mr.Rice in the middle of a practice debate meant you were one of his favourites.He wasn’t alway s__10__on us.I’ll never forget the National Student Debate,at which my calm delivery and my firm grasp of the problems disappeared.The only face I could make out in the audience was Mr.Rice’s face.I could__11__I was doing terribly just by looking at him.After it was over,he came__12__to me.“Not my best__13__,”I said.He shook his head,“No.”Then,to my surprise,he gave me a hug.Mr.Rice’s style didn’t make him a great teacher for everyone.Many kids__14__out of the debate class after the first year.But for me four years with him was my unforgettable__15__of a lifetime. 1.A.telling B.introducingC.announcing D.explaining解析:选A。

2022年外研版英语七年级下模块综合检测(Module 2)

2022年外研版英语七年级下模块综合检测(Module 2)

模块综合检测(二)(Module 2)(45分钟100分)第一卷(共40分)Ⅰ. 听力(10分)(Ⅰ)录音中有五个句子, 听一遍后, 选择与其内容相符的图片。

(5分)1. ______2. ______3. ______4. ______5. _____(Ⅱ)录音中有一篇短文, 听两遍后, 选择最正确答案。

(5分)6. What does Joe like?A. Music.B. Chess.C. Reading.7. What club does Linda want to join?A. The Music Club.B. The Chess Club.C. The Swimming Club.8. ________wants to join the English Club.A. JoeB. LisaC. David9. How many friends of Joe’s are mentioned(提到)in the passage?A. Two.B. Three.C. Four.10. What is Linda’s favourite sport?A. Running.B. Skating.C. Swimming.Ⅱ. 单项填空(10分)1. I like playing ______ piano, but my brother likes playing ______ basketball.A. the; theB. a; theC. /; theD. the; /2. —________?—He can cook at home.A. What does Jim likeB. Does Jim like a horseC. Can Jim ride a horseD. What can Jim do3. Everybody in my class ________ a new club this term.A. joinB. joinsC. joiningD. to join4. ―Jim, can you ______ this word in Chinese?―Yes, I can ______ a little Chinese.A. speak; sayB. say; speakC. tell; speakD. talk; say5. —What do you usually do after school?—I ________ swim with my friends.A. readyB. ready toC. ready to doD. am ready to6. —________your brother speak French?—Yes, he has learnt it in Paris for three years.A. ShouldB. MustC. CanD. May7. What about ________ at home? It is too hot outside.A. stayingB. stayC. to stayD. stays8. Miss. Li is a new________. She ________ us English.A. teaches; teachesB. teacher; teachC. teaches; teacherD. teacher; teaches9. My mother enjoys ________ the tennis match very much.A. watchB. watchingC. watchesD. to watch10. Don’t worry! I’m sure you’ll ______ your classmates if you are kind and friendly to them.A. catch up withB. get on well withC. agree withD. be strict withⅢ. 完形填空(10分)Tongtong is three years old. She likes 1 English very much. Her mother 2 English in a high school.Tongtong likes to 3 English cartoon videos. She plays games with her dolls and 4 with them in English. She learns a lot by watching the videos. Sometimes she can 5 but doesn’t know the 6 . When her mother comes back home, she will tell Tongtong what the words and sentences mean.Tongtong’s mother thinks that interest is important, and7 is more important. Tongtong has great interest in English speaking. She can learn to speak by 8 and listening. But she should have chances(时机)to use it. So her mother tries to talk with her in English at home and takes her to the 9 at school. Though Tongtong makes many mistakes, her English improves 10 .1. A. telling B. speaking C. saying D. talking2. A. teaches B speaks C. learns D. studies3. A. read B. watch C. look at D. see4. A. speaks B. talks C. says D. tells5. A. speak B. to speak C. speaking D. speaks6. A. spelling B. meaning C. words D. sentences7. A. interest B. using C. writing D. reading8. A. watching B. watch C. watches D. to watch9. A. supermarket B. cinema C. bookshop D. English corner10. A. quick B. quickly C. slow D. slowlyⅣ. 阅读理解(10分)Music teachers wanted forNo. 1Middle SchoolWe want two music teachers for our school Music Club. You need to be able to play the guitar or the violin and be good with kids.Time: 3: 20 p. m. —4: 20 p. m. Monday to Friday every week.Pay: 100 yuan an hour.Phone number: 372-3966Email address: No. 1 middleschoolmc@126. comAddress: 326 Bridge Street. (Take No. 121 Bus. )Art teacher wantedCan you paint? Can you draw? Do you like kids and want to be with them? Thenyou can be in Yixiu Art Club.Time: 8: 00 a. m. —10: 00 a. m. Saturday and Sunday every week.Pay: 80 y uan an hour.Phone number: 693-8925Email address: yixiuartclub @163. comAddress: 165 Zhangshan Road. (Take No. 212 Bus. )1. No. 1 Middle School needs________.A. a music teacherB. an art teacherC. two art teachersD. two music teachers2. How many hours does a music teacher need to work every week?A. 5B. 7C. 8D. 103. An art teacher can get about ________ in a month.A. 800 yuanB. 1, 000 yuanC. 1, 280 yuanD. 2, 500 yuan4. Which bus does an art teacher need to take to get there?A. No. 121 Bus.B. No. 122 Bus.C. No. 101 Bus.D. No. 212 Bus.5. If Andrew wants to be an art teacher, he can________.A. call 372-3966B. call 693-8925C. send emails to middleschoolmc@ 126. comD. send emails to yixiuartclub@ 126. com第二卷(共60分)Ⅴ. 根据句意及首字母提示完成单词(10分)1. We choose Daming as our class m________; he always helps us.2. My uncle is f________ and strong. He likes sports very much.3. I p________ never to lie(撒谎)to you from now on.4. Lisa will learn painting in the Art Club this t________.5. They like s________ in summer in the lake because it’s too hot.Ⅵ. 句型转换(10分)1. Lucy can cook some delicious food and drink. (改为否认句)Lucy ________ cook ________ delicious food ________ drink.2. The boy is good at football. (改为同义句)The boy _________ ________ _______football.3. Tony can sing some Chinese songs. (改为一般疑问句并作肯定答复)—________Tony sing ________ Chinese songs?—________, he________.4. David wants to be the cleaning monitor. (改为同义句)David ________ ________ to be the cleaning monitor.5. The girl can play the piano. (对画线局部提问)_________ _______ the girl ________?Ⅶ. 完成句子(15分)1. 每次考试结束了, 我都担忧结果。

三年级上册英语模块综合检测-Module2外研社三起含答案

三年级上册英语模块综合检测-Module2外研社三起含答案

外研版(三年级起点)三年级上册英语Module2 模块综合检测听力部分一、把听到的单词排序。

A. nameB. whatC. MrD. MsE. please________→________→________→________→________二、把听到的句子排序。

A. Your name, please?B. I’m Ms Wang.C. What’s your name?D. Good morning, boys and girls.E. Good afternoon!三、听录音选出你听到的句子的答语。

( ) 1. A. Good morning! B. Good afternoon! ( ) 2. A. I’m Mr Li. B. Hello!( ) 3. A. Good morning, Mr Li. B. I’m Mr Li.( ) 4. A. Hello! B. Sam.( ) 5. A. I’m fine. B. Good morning.笔试部分一、请你根据提示圈出方框里的单词,并把它们翻译成汉语。

(l) what __________ (2) your __________(3) name __________ (4) Mr __________二、选择正确的汉语意思。

( ) 1. What’s your name?A. 你好吗?B. 你叫什么名字?( ) 2. Good afternoon, boys!A. 下午好,男孩们!B. 上午好,男孩们!( ) 3. I’m Mr Li!A. 我是李女士!B. 我是李先生!( ) 4. Your name, please?A. 请告诉我你的名字,好吗?B. 你好吗?( ) 5. Hello, Ms Smart!A. 你好,斯玛特女士!B. 你好,斯玛特先生!三、根据图片选择正确的句子。

( ) 1.A. Good afternoon, boys!B. Good afternoon, boy and girl.( ) 2.A. Good morning, Ms White.B. Good morning, Mr White.( ) 3.A. I’m Mr Wang.B. I’m Ms Wang.( ) 4.A. Hello, I’m Mr Zhao.B. Hello, I’m Ms Zhao.( ) 5.A. I’m a boy.B. I’m a girl.四、找出错误并改正。

近年年高中化学模块综合检测卷(二)(含解析)新人教版必修1(最新整理)

近年年高中化学模块综合检测卷(二)(含解析)新人教版必修1(最新整理)

模块综合检测卷(二)(时间:90分钟分值:100分)一、选择题(共15小题,每小题3分,共45分)1.东晋炼丹家葛洪的《抱朴子》里记载:丹砂(HgS)烧之成水银,积变又还成了丹砂。

这句话里没有涉及的反应类型为()A。

氧化还原反应 B.化合反应C.分解反应D.置换反应答案:D2.下列仪器常用于物质分离的是( )A.①③⑤B。

②③⑤C。

②④⑤ D.①②⑥答案:B3.下列各组物质中分子数相同的是()A.2 L CO和2 L CO2B。

9 g H2O和标准状况下11.2 L CO2C。

标准状况下1 mol O2和22。

4 L H2OD。

0。

2 mol H2和4。

48 L HCl气体答案:B4.下列实验能达到目的的是()A.只滴加氨水鉴别NaCl、AlCl3、MgCl2、Na2SO4四种溶液B。

将NH4Cl溶液蒸干制备NH4Cl固体C.用萃取分液的方法除去酒精中的水D。

用可见光束照射以区别溶液和胶体答案:D5.将X气体通入BaCl2溶液,未见沉淀生成,然后通入Y气体,有沉淀生成,X、Y不可能是()选项X YA SO2H2SB Cl2CO2C NH3CO2D SO2Cl2答案:B6.下图是一检验气体性质的实验装置。

向装置中缓慢通入气体X,若关闭活塞K,则品红溶液无变化,而澄清石灰水变浑浊;若打开活塞K,则品红溶液褪色。

据此判断气体X和洗气瓶内液体Y可能是()选项A B C DX CO SO2CO2Cl2Y浓H2SO4NaHCO3饱和溶液Na2SO3溶液NaHSO3饱和溶液答案:B7.水热法制备Fe3O4纳米颗粒的总反应为3Fe2++2S2O错误!+O2+x OH-===Fe3O4+S4O错误!+2H2O。

下列说法正确的是()A.O2、S2O2-3都是氧化剂B.x=2C.每转移3 mol电子,有1.5 mol Fe2+被氧化D.氧化产物只有S4O错误!答案:C8.常温下,下列各溶液中离子一定能大量共存的是()A.无色透明的溶液中:NH错误!、Fe3+、SO错误!、Cl-B.能使紫色石蕊试液变红的溶液中:K+、Mg2+、SO错误!、SO错误!C.加入金属镁能产生H2的溶液中:Na+、Fe2+、SO错误!、NO错误!D。

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模块综合检测卷(二)(测试时间:120分钟评价分值:150分)一、选择题(每小题共12个小题,每小题共5分,共60分,在每小题给出的四个选项中,只有一项符合题目要求)1.对于任意实数a,b,c,d命题:①若a>b,c≠0,则ac>bc;②若a<b,则ac2>bc2;③若ac2>bc2,则a>b.其中真命题的个数是( )A.0B.1C.2D.3解析:当c<0时,①不正确;当c=0时,②不正确;只有③正确.答案:B2.历届现代奥运会召开时间表如下:( )A.29 B.30 C.31 D.32解析:由题意得,历届现代奥运会召开时间构成以1 896为首项,4为公差的等差数列,所以2 016=1 896+(n-1)·4,解得n=31.答案:C 3.若点(x,y)位于曲线y=|x|与y=2所围成的封闭区域,则2x-y的最小值为( )A.-6 B.-2 C.0 D.2解析:y=|x|与y=2的图象围成一个三角形区域,如图所示,3个顶点的坐标分别是(0,0),(-2,2),(2,2).在封闭区域内平移直线y=2x,在点(-2,2)时,2x-y=-6取最小值.答案:A4.如图所示,设A ,B 两点在河的两岸,一测量者在A 所在的同侧河岸边选定一点C ,测出AC 的长为50m ,∠ACB =45°,∠CAB =105°后,就可以计算出A ,B 两点的距离为( )A .502 mB .503 mC .252 mD.2522m解析:由正弦定理得AB sin ∠ACB =ACsin ∠ABC ,又因为∠ABC =180°-45°-105°=30°, 所以AB =ACsin ∠ACBsin ∠ABC=50×2212=502(m).答案:A5.等比数列{a n }前n 项的积为T n ,若a 3a 6a 18是一个确定的常数,那么数列T10,T 13,T 17,T 25中也是常数的项是()A .T 10B .T 13C .T 17D .T 25解析:因为a 3·a 6·a 18=a9q6·a9q3·a 9·q 9=a 39是一个确定常数,所以a 9为确定的常数.T 17=a 1·a 2·…·a 17=(a 9)17,所以选C.答案:C6.以原点为圆心的圆全部都在平面区域⎩⎨⎧x -3y +6≥0,x -y +2≥0内,则圆面积的最大值为( ) A.18π5 B.9π5C .2πD .π解析:作出不等式组表示的平面区域如图所示,由图可知,最大圆的半径为点(0,0)到直线x -y +2=0的距离,即|0-0+2|12+(-1)2=2,所以圆面积的最大值为π·(2)2=2π.答案:C7.已知三角形的两边长分别为4,5,它们夹角的余弦值是方程2x 2+3x -2=0的根,则第三边长是( )A.20B.21C.22D.61解析:设长为4,5的两边的夹角为θ,由2x 2+3x -2=0得x =12或x =-2(舍),所以cos θ=12,所以第三边长为42+52-2×4×5×12=21.答案:B8.已知数列{a n }的前n 项和S n =n 2-9n ,第k 项满足5<a k <8,则k 等于( )A .6B .7C .8D .9解析:a n =⎩⎪⎨⎪⎧S1,n =1,Sn -Sn -1,n≥2=⎩⎪⎨⎪⎧-8,n =1,-10+2n ,n≥2. 因为n =1时适合a n =2n -10,所以a n =2n -10(n ∈N *). 因为5<a k <8,所以5<2k -10<8.所以152<k <9.又因为k ∈N *,所以k =8. 答案:C9.函数f (x )=1xln(x2-3x +2+-x2-3x +4)的定义域为( )A .(-∞,-4)∪[2,+∞)B .(-4,0)∪(0,1)C .[-4,0)∪(0,1]D .[-4,0)∪(0,1)解析:函数f (x )有定义等价于 ⎩⎪⎨⎪⎧x≠0,x2-3x +2≥0,-x2-3x +4>0或⎩⎪⎨⎪⎧x≠0,x2-3x +2>0,-x2-3x +4≥0,解得-4≤x <0或0<x <1.答案:D10.设△ABC 的内角A ,B ,C 所对的边分别为a ,b ,c ,若b cosC +c cosB =a sin A ,则△ABC 的形状为( )A .锐角三角形B .直角三角形C .钝角三角形D .不确定解析:因为b cos C +c cos B =b ·b2+a2-c22ab +c ·c2+a2-b22ac=b2+a2-c2+c2+a2-b22a=2a22a =a =a sin A , 所以sin A =1.因为A ∈(0,π),所以A =π2,即△ABC 是直角三角形.答案:B11.在数列{x n }中,2xn =1xn -1+1xn +1(n ≥2),且x 2=23,x 4=25,则x 10等于( )A.211B.16C.112D.15解析:由已知可得⎩⎨⎧⎭⎬⎫1xn 成等差数列,而1x2=32,1x4=52,所以2d =52-32=1,即d =12.故1x10=1x1+(10-1)d =⎝ ⎛⎭⎪⎫32-12+9×12=112.所以x 10=211.答案:A12.已知x >0,y >0,且2x+1y=1,若x +2y >m 2+2m 恒成立,则实数m 的取值范围是( )A .(-∞,-2]∪[4,+∞)B .(-∞,-4]∪[2,+∞)C .(-2,4)D .(-4,2)解析:因为x >0,y >0且2x +1y =1,所以x +2y =(x +2y )⎝ ⎛⎭⎪⎫2x +1y =4+4y x +x y ≥4+24y x ·x y =8,当且仅当4y x =xy ,即x =4,y =2时取等号, 所以(x +2y )min =8.要使x +2y >m 2+2m 恒成立,只需(x +2y )min >m 2+2m 恒成立, 即8>m 2+2m ,解得-4<m <2.答案:D二、填空题(本大题共4小题,每小题5分,共20分.把答案填在题中横线上)13.若函数f (x )=⎩⎨⎧x2+1,x>0,-x ,x≤0.则不等式f (x )<4的解集是________.解析:不等式f (x )<4等价于⎩⎪⎨⎪⎧x>0,x2+1<4或⎩⎪⎨⎪⎧x≤0,-x<4,即0<x <3或-4<x ≤0.因此,不等式f (x )<4的解集是(-4,3).答案:(-4,3)14.已知数列{a n }的通项公式为a n =2n -2004,则这个数列的前________项和最小.解析:设a n =2n -2 004的对应函数为y =2x -2 004.易知函数y =2x -2 004在R 上是增函数,且当y =0时,x =1 002.因此,数列{a n }是单调递增数列,且当1≤n ≤1 002时,a n ≤0;当n >1 002时,a n >0. 所以数列{a n }的前1 001项或前1 002项的和最小.答案:1 001或1 002.15.在△ABC 中,内角A ,B ,C 的对边分别是a ,b ,c ,若a 2-b 2=3bc ,sin C =23sin B ,则A 等于________.解析:由正弦定理,且sin C =23sin B ⇒c =23b .又a 2-b 2=3bc ,故由余弦定理得cos A =b2+c2-a22bc =b2+c2-(b2+3bc )2bc =c2-3bc2bc=(23b )2-3b·23b2b·23b=32,所以A =30°.答案:30°16.(2015·山东卷)定义运算“⊗”:x ⊗y =x2-y2xy(x ,y ∈R ,xy ≠0).当x >0,y >0时,x ⊗y +(2y )⊗x 的最小值为________.解析:因为x ⊗y =x2-y2xy ,所以(2y )⊗x =4y2-x22xy .又x >0,y >0,故x ⊗y +(2y )⊗x =x2-y2xy +4y2-x22xy =x2+2y22xy ≥22xy2xy=2,当且仅当x =2y 时,等号成立.答案:2三、解答题(本大题共6小题,共70分.解答题应写出文字说明、证明过程或推演步骤)17.(本小题满分10分)(2015·江苏卷)在△ABC 中,已知AB =2,AC =3,A =60°.(1)求BC 的长;(2)求sin 2C 的值.解:(1)由余弦定理知,BC 2=AB 2+AC 2-2AB ·AC ·cos A =4+9-2×2×3×12=7,所以BC =7.(2)由正弦定理知,AB sinC =BCsin A, 所以sin C =AB BC ·sin A =2sin 60°7=217.因为AB <BC ,所以C 为锐角, 则cos C =1-sin2C =1-37=277.因此sin 2C =2sin C ·cos C =2·217·277=437.18.(本小题满分12分)设{a n }是公比为正数的等比数列,a 1=2,a 3=a 2+4. (1)求{a n }的通项公式;(2)设{b n }是首项为1,公差为2的等差数列,求数列{a n +b n }的前n 项和S n .解:(1)设q 为等比数列{a n }的公比,则由a 1=2,a 3=a 2+4得2q 2=2q +4,即q 2-q -2=0,解得q =2或q =-1(舍去),因此q =2,所以{a n }的通项为a n =2·2n -1=2n (n ∈N +).(2)S n =2(1-2n )1-2+n ·1+n (n -1)2·2=2n +1+n 2-2.19.(本小题满分12分)在△ABC 中,角A ,B ,C 所对的边分别为a ,b ,c .已知△ABC 的周长为2+1,且sin A +sin B =2sin C .(1)求边c 的长;(2)若△ABC 的面积为16sin C ,求C 的大小.解:(1)由sin A +sin B =2sin C 及正弦定理可知:a +b =2c .又因为a +b +c =2+1,所以2c +c =2+1,从而c =1.(2)三角形面积S =12ab sin C =16sin C ,所以ab =13,a +b =2.因为cos C =a2+b2-c22ab =(a +b )2-2ab -12ab =12,又因为0<C <π,所以C =π3.20.(本小题满分12分)如图所示,公园有一块边长为2的等边三角形ABC 的边角地,现修成草坪,图中DE 把草坪分成面积相等的两部分,点D 在AB 上,点E 在AC 上.(1)设AD =x (x ≥0),ED =y ,求用x 表示y 的函数关系式;(2)如果DE 是灌溉水管,为节约成本,希望它最短,DE 的位置应在哪里?如果DE 是参观线路,则希望它最长,DE 的位置又在哪里?解:S △ABC =34×4=3,所以S △ADE =12·x ·AE · sin 60°=32,所以x ·AE =2,所以AE =2x≤2,所以x ≥1.(1)在△ADE 中,y 2=x 2+⎝ ⎛⎭⎪⎫2x 2-2·x ·2x ·cos 60°=x 2+4x2-2,所以y =x2+4x2-2(1≤x ≤2).(2)令t =x 2,则1≤t ≤4,所以y =t +4t-2(1≤t ≤4). 当t =2,即x =2时,即当AD =2,AE =2时,DE 最短为2;当t =1或4,即AD =2,AE =1或AD =1,AE =2时,DE 最长为3.21.(本小题满分12分)已知函数f (x )=x 2-ax (a ∈R),(1)若不等式f (x )>a -3的解集为R ,求实数a 的取值范围;(2)设x >y >0,且xy =2,若不等式f (x )+f (y )+2ay≥0恒成立,求实数a 的取值范围.解:(1)不等式f (x )>a -3的解集为R ,即不等式x 2-ax -a +3>0的解集为R ,所以Δ=a 2+4(a -3)<0恒成立,即a 2+4a -12<0恒成立,所以-6<a <2. (2)不等式f (x )+f (y )+2ay ≥0恒成立,即不等式x 2-ax +y 2-ay +2ay ≥0恒成立,所以x 2+y 2≥a (x -y )恒成立. 所以实数a 的取值范围为(-∞,4].22.(本小题满分12分)已知公差大于0的等差数列{a n }的前n 项和为S n ,且满足:a 3a 4=117,a 2+a 5=22. (1)求数列{a n }的通项公式a n ;(2)若数列{b n }是等差数列,且b n =Snn +c,求非零常数c ;(3)若(2)中的{b n }的前n 项和为T n ,求证:2T n -3b n -1>64bn(n +9)bn +1.(1)解:{a n }为等差数列,因为a 3+a 4=a 2+a 5=22,又因为a 3·a 4=117,所以a 3,a 4是方程n 2-22x +117=0的两个根. 又因为公差d >0,所以a 3<a 4,所以a 3=9,a 4=13.所以⎩⎪⎨⎪⎧a1+2d =9,a1+3d =13即⎩⎪⎨⎪⎧a1=1,d =4,所以a n =4n -3.(2)解:由(1)知,S n =n ·1+n (n -1)2·4=2n 2-n ,所以b n =Sn n +c =2n2-n n +c ,所以b 1=11+c ,b 2=62+c, b 3=153+c. 因为{b n }是等差数列,所以2b 2=b 1+b 3,所以2c 2+c =0,所以c =-12或c =0(舍去).(3)证明:由(2)得b n =2n2-n n -12=2n ,T n =2n +n (n -1)·22=n 2+n ,2T n -3b n -1=2(n 2+n )-3(2n -2)=2(n -1)2+4≥4,当n =1时取“=”,又n >1,所以取不到“=”,即2T n -3b n -1>4. 64bn (n +9)bn +1=64×2n (n +9)·2(n +1)=64nn2+10n +9=64n +9n+10≤4,当n =3时取“=”.上述两式中“=”不可能同时取到,所以2T n -3b n -1>64bn(n +9)bn +1.。

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