问题 单项选择题

跆拳道中的脚法占()。

A.70%

B.80%

C.90%

答案

参考答案:A

完形填空
My uncle has a very beautiful umbrella. He has had it  36  and as he is very  37  it, it still looks as good as new.
“That umbrella must have   38  you a great deal of money, Uncle.” I said to him one day.
“No,” he replied, “ 39 ”
“Was it a present?” I asked again.
“No,” said he.
“Then how did you get it?” I asked.
“Well,” he answered, “it is a strange true story. About ten years ago, I was walking along a quiet London street one evening   40  it suddenly rained. I had no raincoat and no umbrella. No buses ran through that street and there were no   41  in sight. As I was on my way to a party, I didn't want to get  42 . So I stood at a doorway and waited for the rain to stop. By and by it grew quite  43 .There wasn't a person around, and  44  it rained and rained.  45  a young man came to the place where I was standing,  46   a large umbrella over his head.  47  I hoped he would   48  me to walk to the next corner with him in order that I could get a taxi, I stepped   49  the dark doorway where I had been standing, and said: “ 50 , where are you going with that umbrella?”
 51  by my sudden appearance, the young man  52   the umbrella, which, I'm afraid, he had just stolen, ran away, and  53  into the darkness. I picked up the umbrella and continued my walk. I knew it would be  54  in this big city to try and discover the owner and so I've kept it   55 .”
小题1:
A.for months B. for yearsC.since childhoodD.for a few days
小题2:
A.satisfied withB.afraid of C.proud ofD.careful with
小题3:
A.givenB.costC.savedD.made
小题4:
A.very littleB.I don't knowC.not a pennyD.quite a lot
小题5:
A.whenB.thoughC.becauseD.after
小题6:
A.bicyclesB.policemenC.friendsD.taxis
小题7:
A.tiredB.backC.wetD.away
小题8:
A.darkB.fineC.dirtyD.dangerous
小题9:
A.naturallyB.suddenlyC.alwaysD.still
小题10:
A.At onceB.At lastC.As usualD.As well
小题11:
A.sellingB.carryingC.movingD.showing
小题12:
A.AsB.AlthoughC.WhileD.If
小题13:
A.orderB.persuadeC.allow D.promise
小题14:
A.intoB.out ofC.towardsD.along
小题15:
A.By the wayB.HelpC.Excuse meD.Stop
小题16:
A.PunishedB.DiscouragedC.WarnedD.Frightened
小题17:
A.raisedB.tookC.droppedD.forgot
小题18:
A.disappearedB.lostC.pulledD.turned
小题19:
A.endlessB.interesting C.excitingD.hopeless
小题20:
A.ever sinceB.for a whileC.for youD.forever
实验题

(Ⅰ)(6分)为研究滑块的运动,选用滑块、钩码、纸带、毫米刻度尺、带滑轮的木板、以及由漏斗和细线构成的单摆等组成如图1所示的装置,实验中,滑块在钩码作用下拖动纸带做匀加速直线运动,同时让单摆垂直于纸带运动方向做小摆幅摆动,漏斗可以漏出很细的有色液体,在纸带上留下的痕迹记录了漏斗在不同时刻的位置,如图2所示

①漏斗和细线构成的单摆在该实验中所起的作用与下列哪个仪器相同?________(填写仪器序号)

A.打点计时器

B.秒表

C.毫米刻度尺

D.电流表②如果用该实验装置测量滑块加速度,对实验结果影响最大的原因是:___________________________

(Ⅱ)(12分)现提供如下器材,测定定值电阻Rx(约为5KΩ)的阻值

a.两相同电流计G1G2(50μA,内阻约4KΩ)

b.电阻箱R1(0~9999.9Ω)

c.电阻箱R2(0~99999.9Ω)

d.电源E(电动势约3V,内阻不计)

e.滑动变阻器R(最大阻值20Ω)

f.开关两个,导线若干

①由于电流计量程很小,需要先将它们进行改装,某同学设计了用半偏法测电流计内阻的电路,如图,实验过程如下:先将R2调为最大,然后闭合K1K2,调节R1R2,保证­­­_________满偏,使_________半偏(填写元件符号)由此测得电流计G2­­的阻值

②若测得电流计内阻为4.2KΩ,要将G2改装成量程为3V的电压表,需串联的电阻值为___________

③采用改装后的电压表并伏安法测量待测电阻阻值,请在虚线框内画出实验电路图