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7.2010年10月1日,“嫦娥二号”卫星在西昌卫星发射中心成功发射。如图所示为嫦娥一号、二号卫星先后绕月做匀速圆周运动的示意图,“嫦娥一号”在轨道I上运行,距月球表面高度为200km;“嫦娥二号”在轨道II上运行,距月球表面高度为100km。根据以上信息可知

A.“嫦娥二号”的运行速率大于“嫦娥一号”的运行速率

B.“嫦娥二号”的运行周期大于“嫦娥一号”的运行周期

C.“嫦娥二号”的向心加速度大于“嫦娥一号”的向心加速度

D.“嫦娥二号”和“嫦娥一号”在轨道上运行时,所携带的仪器都处于完全失重状态

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6.如图甲所示,理想变压器原、副线圈的匝数比为10︰1,电阻R=22Ω,各电表均为理想电表。原线圈输入电压的变化规律如图乙所示。下列说法正确的是

 

A.该输入电压的频率为100Hz        B.电压表的示数为22V

C.电流表的示数是1A           D.电阻R消耗的电功率是22W

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5.如图所示,一物体从斜面上高为处的A点由静止滑下,滑至斜面底端B时,因与水平面碰撞仅保留了水平分速度而进入水平轨道,在水平面上滑行一段距离后停在C点,测得AC两点间的水平距离为,设物体与斜面、水平面间的动摩擦因数均为,则

A.       B.

C.       D.无法确定

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4.如图,L是直流电阻为零、自感系数很大的线圈,AB是两个相同的小灯泡,某时刻闭合开关S,通过AB两灯泡中的电流IAIB随时间t变化的图象,正确的是

 

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3.一轻质弹簧一端固定在竖直墙壁上,另一自由端位于O点,现用一滑块将弹簧的自由端(与滑块未拴接)从O点压缩至A点后由静止释放,运动到B点停止,如图所示。滑块自A运动到Bv-t图象,可能是下图中的

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2.某电场的电场线分布如图所示,下列说法正确的是

A.a点的电势高于b点的电势

B.c点的电场强度大于d点的电场强度

C.若将一正试探电荷由a点移到b点,电场力做负功

D.若将一负试探电荷由c点移到d点,电势能增加

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1.在第十一届全运会男子举重56公斤级比赛中,龙清泉以302公斤的总成绩获得冠军,并以169公斤超该级别挺举世界纪录。如图所示,设龙清泉所举杠铃的总重为G,杠铃平衡时每只手臂与竖直线所成的夹角为30°,则他每只手臂承受的张力为

A.         B. 

C.        D.G

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It was dark when I came out of my office.In order to get home early,I hired a taxi.The

car was__1__along the road.I broke the__2__on purpose,for fear that the driver might be

too__3__to drive.“When do you go back home in the evening?”

“Nine o’clock,I’ll go home after this trip.”

“Then when do you come out in the morning?”I__4__another question.“Nine o’clock,too.And I go home for lunch and dinner,just__5__I worked at an office.”His ease(悠闲)surprised me,because every time I__6__a taxi,what I hear from the driver are only complaints.They complain that they __7__ work from morning till night,that it is__8__to earn money,that they are bullied(欺负)by the__9__,or that the corporation leaders are seated lazy and enjoy the__10__of others’ work.It seems that they have a dissatisfaction against everything.But this driver told me,“I find it__11__to be a manager as I was before.I don’t like__12__work.I like driving,just for pleasure.It’s__13__that I seldom drive without a passenger.Any__14__?Yes,I never follow an empty taxi.If it goes__15__,I go northward.If it goes along the highway,I turn into a__16__street.In this way I always get__17__.”

His word showed his satisfaction with his life and the pride he__18__in his job.Such feelings are__19__among people today.I couldn’t help feeling curious when I__20__such a state of mind in a stranger on a cold winter night.

1.A.driving  B.flying  C.walking  D.going

解析:flying表汽车急速行驶。[]

答案:B

2.A.calmness  B.quietness  C.stillness  D.silence[

解析:silence表沉默;A表内心平静;B表不吵闹的安静;C表不动。

答案:D

3.A.excited  B.frightened  C.tired  D.puzzled

解析:担心司机有可能太疲劳开不了车。

答案:C

4.A.gave out  B.threw out  C.let off  D.set off

解析:throw out“提出”,有突然冒出来的意味。

答案:B

5.A.as  B.though  C.as if  D.even if

解析:as if可与虚拟语气连用,好像在办公室工作,其实不是。

答案:C

6.A.ride  B.have  C.get  D.make

解析:ride a taxi“乘坐出租车”。

答案:A

7.A.have to  B.must  C.need  D.should

解析:表“不得不,被迫”,下文说不得不从早干到晚。

答案:A

8.A.easy  B.hard  C.possible  D.simple

解析:都是抱怨的话,“挣钱很难”。

答案:B

9.A.officials  B.officers  C.fighters  D.policemen

解析:“欺负”出租车司机的自然是警察。

答案:D

10.A.results  B.achievements  C.gains  D.fruits

解析:抱怨公司领导坐享他们的劳动成果。fruits表“果实;成果”。

答案:D

11.A.tired  B.tiring  C.excited  D.exciting

解析:这位司机当经理当烦了,改行当司机,对自己的工作很满意。

答案:B

12.A.management  B.arrangement  C.judgement  D.development

解析:表“管理工作”。

答案:A

13.A.clear  B.likely  C.fortunate  D.wise[

解析:上文说很少跑空车,所以“很幸运”。

答案:C

14.A.secret  B.trick  C.skill  D.method

解析:下文有解释他的秘诀。

答案:A

15.A.backward  B.forward  C.southward  D.northward[

解析:与下文northward相对,别人向南,他就往北。

答案:C

16.A.wide  B.narrow  C.lonely  D.empty

解析:与highway相对,别人在大路上行驶,他就去小胡同。

答案:B

17.A.strangers  B.passers­by  C.customers  D.guests

解析:他与别人相反的目的就是为了有乘客。

答案:C

18.A.had  B.made  C.kept  D.took

解析:take pride in“以……为自豪”。

答案:D

19.on   B.rare  C.much   D.little

解析:rare表“罕见的;稀少的”,而作者以前听到的都是抱怨。

答案:B

20.A.found  B.found out  C.looked  D.looked for

解析:当作者发现这种心态时,他感到惊奇。

答案:A

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10.________ our students need during the summer holidays is time,freedom and health,the

official stressed.[]

A.That  B.Which  C.What  D.Whether

解析:考查名词性从句。此处缺主语从句的引导词,引导词本身在从句中作动词need[]

的宾语,因此用what。

答案:C

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9.As soon as little Tom had________a little from his shock,his first thought was to get away.

A.returned  B.absorbed  C.survived  D.recovered

解析:考查动词辨析。根据语意判断,此处表示 “从震惊中恢复过来”,因此用动

词recover。survive当 “幸免于难,挺过” 讲时是及物动词,后面一般不出现介词。

答案:D

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