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
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
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A、C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
4.如图,L是直流电阻为零、自感系数很大的线圈,A和B是两个相同的小灯泡,某时刻闭合开关S,通过A、B两灯泡中的电流IA、IB随时间t变化的图象,正确的是
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B的v-t图象,可能是下图中的
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
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
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
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
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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