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1．帶電粒子在電場(chǎng)中加速(或減速)

　　 當(dāng)電荷量為、質(zhì)量為m、初速度為的帶電粒子經(jīng)電壓U加速后，速度變?yōu)?sub>，由動(dòng)能定理得：。若，則有，這個(gè)關(guān)系式對(duì)任意靜電場(chǎng)都是適用的。

　　 對(duì)于帶電粒子在電場(chǎng)中的加速問題，應(yīng)突出動(dòng)能定理的應(yīng)用。

　有時(shí)也會(huì)碰到帶電粒子在電場(chǎng)中即加速又減速，甚至是互逆的過程，此時(shí)要注意運(yùn)用勻變速直線運(yùn)動(dòng)的相關(guān)知識(shí)進(jìn)行分析和求解。

《考試大綱》對(duì)此部分的說明：

①帶電粒子在勻強(qiáng)電場(chǎng)中運(yùn)動(dòng)的計(jì)算，只限于帶電粒子進(jìn)入電場(chǎng)時(shí)速度平行或垂直于電場(chǎng)的情況

②洛侖茲力的計(jì)算只限于速度與磁感應(yīng)強(qiáng)度垂直的情況

第二節(jié)：滿分25分。要求根據(jù)所給情景，用英語(yǔ)寫一篇100個(gè)單詞左右的短文。

假定你是某英文報(bào)的小記者，最近你對(duì)大學(xué)生的就業(yè)觀點(diǎn)及專家對(duì)此的看法進(jìn)行了采訪。請(qǐng)根據(jù)以下要點(diǎn)寫一篇題為“Different Job Outlooks”的短文，詞數(shù)100詞左右。

學(xué)生觀點(diǎn)：

1．大部分想找一份薪金豐厚的工作；

2．部分持觀望態(tài)度，等待良機(jī)；

3．少數(shù)想自己創(chuàng)業(yè)。

專家觀點(diǎn)：不應(yīng)坐等，要盡快找份工作，理由是：

　1．積累經(jīng)驗(yàn)；

2．掙錢養(yǎng)活自己；

3．明年就業(yè)形勢(shì)或許更嚴(yán)峻。

2008-2009 學(xué)年第二學(xué)期高二年級(jí)期末考試答題卡 英語(yǔ)

1______　 21_____　 36_____　 56_____　 76_____

2______　 22_____　 37_____　 57_____　 77_____

3______　 23_____　 38_____　 58_____　 78_____

4______　 24_____　 39_____　 59_____　 79_____

5______　 25_____　 40_____　 60_____　 80_____

6______　 26_____　 41_____　 61_____　 81_____

7______　 27_____　 42_____　 62_____　 82_____

8______　 28_____　 43_____　 63_____　 83_____

9______　 29_____　 44_____　 64_____　 84_____

10_____　 30_____　 45_____　 65_____　 85_____

11_____　 31_____　 46_____　 66_____

12_____　 32_____　 47_____ 　67_____

13_____　 33_____　 48_____　 68_____

14_____　 34_____　 49_____　 67_____

15_____　 35_____　 50_____　 70_____

16_____　　　　　 51_____　 71_____

17_____　　　　　 52_____　 72_____

18_____　　　　　 53_____　 73_____

19_____　　　　　 54_____　 74_____

20_____　　　　　 55_____　 75_____

假定你是某英文報(bào)的小記者，最近你對(duì)大學(xué)生的就業(yè)觀點(diǎn)及專家對(duì)此的看法進(jìn)行了采訪。請(qǐng)根據(jù)以下要點(diǎn)寫一篇題為“Different Job Outlooks”的短文，詞數(shù)100詞左右。

學(xué)生觀點(diǎn)：

1．大部分想找一份薪金豐厚的工作；

2．部分持觀望態(tài)度，等待良機(jī)；

3．少數(shù)想自己創(chuàng)業(yè)。

專家觀點(diǎn)：不應(yīng)坐等，要盡快找份工作，理由是：

　1．積累經(jīng)驗(yàn)；

2．掙錢養(yǎng)活自己；

3．明年就業(yè)形勢(shì)或許更嚴(yán)峻。

Different Job Outlooks

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第二節(jié) 完型填空(共20小題，每小題1.5分，滿分30分)As the train approached the seaside town where I was going to spend my holidays, I went into the corridor to __36__ my legs. I stayed there a short while, breathing in the fresh sea air and __37__ a few words with one of the passengers, whom I had met earlier on the __38__.

When I turned to go back to __39__, I happened to glance into the compartment (車廂) next to mine. Sitting there was a man who many years before had been my neighbor. He was a great __40__, I remembered; it used to take hours to __41__ him once he began a conversation. I was not at all __42__ when he went to live in another part of London. We had not met since then, __43__ did I wish to meet him now, when __44__ was about to begin.

Luckily at that moment he was __45__ busy talking to the man opposite him to catch sight of me. I slipped back into my compartment, took down my two suitcases and carried them to the far end of the corridor so as to be ready to __46__ the train as soon as it stopped． The moment the train came to a halt (停止), I called a porter, who in no time at all had carried my luggage out of the station and __47__ me a taxi. As I drove towards my small hotel on the outskirts of the town, I breathed a deep sigh of relief at my__48__. There was little chance that I should __49__ my boring ex-neighbor again.

When I reached the hotel, I went __50__ to my room and rested there until it was time for dinner. Then I went down to the dining room and __51__ a drink. I had barely raised the glass to my lips __52__ an all too familiar voice greeted me. I had not escaped from the tiresome neighbor __53__! He grasped me warmly by the hand and insisted that we __54__ a table in the dinning-room. “This is a pleasant __55__,” he said． “I never expected to see you again after all these years.”

36．A．reach 　 B．extend 　 C．stretch D．loosen

37．A．exchanging 　 B．changing 　　 C．talking through D．talking about

38．A．fruit stand B．department store 　　 C．bus stop D．station platform

39．A．the station B．my seat C．the waiting room 　　 D．the office

40．A．talker 　 B．poet　 　 C．speaker D．hero

41．A．get rid of 　 B．take care of　 　 C．get away from 　 D．pay attention to

42．A．happy 　 B．a(chǎn)fraid 　 C．sorry 　 D．content

43．A．so 　 B．no 　 C．not D．nor

44．A．holiday B．school day 　 C．work day 　　 D．conversation

45．A．very B．too　 C．so　 D．much　

46．A．get on 　 B．stay on　 C．catch 　 D．get off

47．A．found 　 B．gave 　　 C．offered　 D．stopped

48．A．good luck 　 B．nice choice C．narrow escape 　 D．bad fortune

49．A．keep in touch with B． run into　　　 C．knock down D． catch up with

50．A．carelessly 　 B．a(chǎn)imlessly 　 C．idly D．straight

51．A．ordered B．requested　　 C．fetched D．a(chǎn)sked

52．A．while 　 B．before 　 C．when 　　 D．a(chǎn)fter

53．A．a(chǎn)bove all 　 B．a(chǎn)fter all 　 C．first of all 　　 D．in all

54．A．spare 　 B．rent 　　 C．reserve D．share

55．A．surprise 　　 B．interview 　 C．a(chǎn)ppointment　 D．party