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广东省惠州市博罗县华侨中学英语unit3 book8 weely test(无答案)

广东省惠州市博罗县华侨中学英语unit3 book8 weely test(无答案)
广东省惠州市博罗县华侨中学英语unit3 book8 weely test(无答案)

博罗县华侨中学2018年春学期第13周(5月20日至26日)

高二年级普通班英语科周测题

测试范围:Book 8 Unit 3 Inventors and Inventions

命题人:李伟英审题人:李伟英

词汇运用共(30分)

1.While giving his speech, Mr. Wang referred to his draft (不时地)

2.As soon as she got back home after work, she preparing dinner for the family.(着手做)

3.As a good driver, you should always drive (谨慎地)

4.With all equipment bought online, he the deep sea to be with the fish.(潜入)

5.Please and let me write down your address.(别挂断)

6.It’s very (方便的) to purchase anything you need on line at present.

7.Have you seen his cup made of (无锈的) steel?

8.He managed to (忍受的) all hardship.

9.The lift was (出故障的),so we had to walk.

10.Did she like the (香水) given as a birthday gift?

11.Finally,his parents had to lower their (期望) of him.

12.His (清白) was proved at last.

13.Mother touched her (额头)for a while and looked worried.

14.The weather was so (极冷的) that nobody could be seen in the street.

15.Many fruits planted in my hometown get (成熟的) in autumn.

语法填空(共20分)

It was his dynamic spirit 1 led to his most famous invention--the telephone in 1876. Bell never set out to invent the telephone and 2 he was trying to design was a multiple telegraph. This 3 (originally) telegraph sent a message over distances using Morse code . But only one message could go at a time. Bell wanted to improve 4 so that it could send several 5 (message) at the same time. He designed a machine that would separate different sound waves and allow different conversations to be held 6 the same time . But he found the problem difficult 7 (solve).One day as he was experimenting with one end of a straw joined to 8 deaf man’s ear drum and the other to a piece of smoked glass ,Bell noticed that when he spoke into the ear, the straw drew sound waves on the glass. Suddenly he had flash of 9 (inspire) . If sound waves could__10___ (reproduce) in a moving electrical current , they could be sent along a wire . In searching to improve the telegraph , Bell had invented the first telephone!

改错题(共20分)

Tiring of sleeping on the floor, a young man in Teheran saved up for years to buy real bed . For the first time in his life, he become the proud owner of a bed which had springs(弹簧))and a mattress(床垫). Because the weather was very hot , he carried the bed on to the roof of his house. He slept very well for the first two night, but on the third night, a storm blew up. A gust of wind swept the bed off the roof and send it into the courtyard below . The young man did not wake up until the bed struck the ground. Although the bed was smashed to pieces, but the man was miraculously unhurt . When he woke up , he was still on the mattress. Take a look at the bits of wood and metal that lay around he ,the man sadly picked out the mattress and carried it into his house. After he had put it on the floor, he quick went to sleep again.

完形填空(共30分)

Father was a hard-working man who delivered bread as a living to support his wife and three children. He spent all his evenings after work attending classes, hoping to 1 himself so that he could one day find a better paying job. 2 Sundays, father hardly ate a meal together with his family. He worked and studied very hard because he wanted to 3 his family with the best money could buy.

or 19 any more promotions. From then on he was going to devote

more 20 to his family.

1.A.teach B. improve C .persuade D. admit

2.A.Rather than B. Regardless of C .Except for D. As for

3.A.provide B .treat C. rescue D. reserve

4.A.survey B. study C. contest D. examination

5.A.Instead B. Moreover C. However D. Therefore

6.A.refused B. continued C. failed D .promised

7.A.position B. right C. fate D. power

8.A.university B. market C. job D. course

9.A.stood out B. carried on C .paid off D .turned up

10.A.troubles B .tasks C. problems D. preparations

11.A.big B .bright C .modern D. clean

12.A.quality B. usage C. guidance D. comfort

13.A.hesitated B. rejected C. decided D. pretended

14.A.honored B. promoted C. welcomed D. praised

15.A.entertaining B. attracting C .following D. directing

16.A .careful B .useless C. rare D. beautiful

17.A.style B. goal C. coast D. surface

18.A.discussed B. declared C. explained D. talked

19 A. pursue B. catch C. lose D. waste

20.A.effort B. money C strength D. time

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一、第六章 圆周运动易错题培优(难) 1.如图所示,两个可视为质点的、相同的木块A 和B 放在转盘上,两者用长为L 的细绳连接,木块与转盘的最大静摩擦力均为各自重力的K 倍,A 放在距离转轴L 处,整个装置能绕通过转盘中心的转轴O 1O 2转动,开始时,绳恰好伸直但无弹力,现让该装置从静止开始转动,使角速度缓慢增大,以下说法正确的是( ) A .当23Kg L ω> 时,A 、B 相对于转盘会滑动 B 223Kg Kg L L ω< C .ω在223Kg Kg L L ω<< B 所受摩擦力变大 D .ω223Kg Kg L L ω< A 所受摩擦力不变 【答案】A B 【解析】 【分析】 【详解】 A .当A 所受的摩擦力达到最大静摩擦力时,A 、 B 相对于转盘会滑动,对A 有 21Kmg T m L ω-= 对B 有 212Kmg T m L ω+=? 解得 123Kg L ω= 当23Kg L ω> 时,A 、B 相对于转盘会滑动,故A 正确; B .当B 达到最大静摩擦力时,绳子开始出现弹力 2 22Kmg m L ω=? 解得 22Kg L ω=

当 223Kg Kg L L ω<< 时,绳子具有弹力,故B 正确; C .当ω在02Kg L ω<< 范围内增大时,B 所受的摩擦力变大;当2Kg L ω=时,B 受到的摩擦力达到最大;当ω在223Kg Kg L L ω<< 范围内增大时,B 所受摩擦力不变,故C 错误; D .当ω在203Kg L ω<<范围内增大时,A 所受摩擦力一直增大,故D 错误。 故选AB 。 2.如图所示,水平转台上有一个质量为m 的小物块,用长为L 的轻细绳将物块连接在通过转台中心的转轴上,细绳与竖直转轴的夹角为θ,系统静止时细绳绷直但张力为零.物块与转台间动摩擦因数为μ(

广东省惠州市博罗县2019-2020年九年级(上)期末数学试卷 解析版

2019-2020学年九年级(上)期末数学试卷 一.选择题(共10小题) 1.如图图形中,是中心对称图形的是() A.B.C.D. 2.方程x(x﹣1)=0的根是() A.0 B.1 C.0或1 D.无解 3.如图,四边形ABCD是⊙O的内接四边形,若∠A=70°,则∠C的度数是() A.100°B.110°C.120°D.130° 4.下列事件中是不可能事件的是() A.三角形内角和小于180° B.两实数之和为正 C.买体育彩票中奖 D.抛一枚硬币2次都正面朝上 5.关于反比例函数y=﹣,下列说法正确的是() A.图象过(1,2)点 B.图象在第一、三象限 C.当x>0时,y随x的增大而减小 D.当x<0时,y随x的增大而增大 6.抛物线y=﹣x2+1向右平移2个单位长度,再向下平移3个长度单位得到的抛物线解析式是() A.y=﹣(x﹣2)2+4 B.y=﹣(x﹣2)2﹣2 C.y=﹣(x+2)2+4 D.y=﹣(x+2)2﹣2 7.如图,△ABC的边AC与⊙O相交于C、D两点,且经过圆心O,边AB与⊙O相切,切点

为B.已知∠A=30°,则∠C的大小是() A.30°B.45°C.60°D.40° 8.如图,将Rt△ABC绕点A按顺时针旋转一定角度得到Rt△ADE,点B的对应点D恰好落在BC边上.若AC=,∠B=60°,则CD的长为() A.0.5 B.1.5 C.D.1 9.已知,关于x的一元二次方程(m﹣2)x2+2x+1=0有实数根,则m的取值范围是()A.m<3 B.m≤3 C.m<3且m≠2 D.m≤3且m≠2 10.已知抛物线y=x2+bx+c的部分图象如图所示,若y<0,则x的取值范围是() A.﹣1<x<4 B.﹣1<x<3 C.x<﹣1或x>4 D.x<﹣1或x>3 二.填空题(共7小题) 11.在一个有15万人的小镇,随机调查了1000人,其中200人会在日常生活中进行垃圾分类,那么在该镇随机挑一个人,会在日常生活中进行垃圾分类的概率是.12.已知反比例函数y=的图象经过点(2,﹣3),则此函数的关系式是.13.已知关于x的方程x2+3x+m=0有一个根为﹣2,则m=,另一个根为.14.已知圆锥的底面半径为3,高为4,则该圆锥的侧面积为.

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