（答案解析）
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一、单项选择题。
1.The body can be set for evening _____ the sun is rising.
A. which B. where C. how D. while
2.______ the two clocks would normally sound their alarms together, now they ring at different times.
A. Therefore B. Whereas C. However D. Whether
3.______ we understand what Jet Lag is , we can go some way to overcoming it .
A. Rather than B. As though C. Ever since D. Now that
4.Protein in meals stimulates wakefulness, ______ carbohydrates promote sleep.
A. which B. while C. that D. what
5.These factors could account for some individuals _____ able to do well using inefficient methods.
A. be B. to be C. being D. been
6.Left _____, our internal clocks would tie the body to a 25 hour rhythm.
A. alone B. along C. lonely D. among
7.Some fall apart under pressure, while others do well ______ the pressure.
A. regardless B. despite C. relevant D. tolerant
8.In time the physiological system will reset itself, but it _____ time.
A. do takes B. does to take C. does take D. does taking
9.It is highly unlikely that the student who has most of his attention centered on fancying at ______ will be able to recall even the major points of a lecture.
A. hand B. ease C. Length D. large
10.The problem of Jet Lag is one every international traveler comes _____ at some time.
A. along B. around C. across D. about
二、综合题。
1.Word Form
1. The problem of Jet Lag is one every international traveler_____( come) across at some time.
2. The effects of rapid travel on the body are actually far _______(disturb) than we realize.
3. Now that we understand what Jet Lag is , we can go some way to ______(overcome) it.
4. The other belongs in our internal clocks which , _______(leave) alone , would tie the body to a 25 hour - yes, 25 - rhythm.
5. One timing system comes from the evidence of our senses and stomachs, and the periodicity we experience when ______(live) in a particular time zone.
6. Naturally these have to _______(regulate) and there are two regulatory systems which interact.
7. He ______(fly) to Egypt to conduct negotiations on the Aswan Dam last week.
8. Your chances of success are higher if you avoid the distractors which ______(know) to hinder the typical student.
2. Translation
1. 快速旅行对人体的影响比我们意识到的要大得多。
2. 他后来把自己的错误判断归咎于时差反应。
3. 食物中的蛋白质使人兴奋，而碳水化合物使人易于入睡。
4. 在外语学习中没有捷径可走。
5. 为了克服时差反应我们能做些什么呢？
答案部分
一、单项选择题。
1.
【正确答案】 D
2.
【正确答案】 B
3.
【正确答案】 D
4.
【正确答案】 B
5.
【正确答案】 C
6.
【正确答案】 A
7.
【正确答案】 B
8.
【正确答案】 C
9.
【正确答案】 D
10.
【正确答案】 C
二、综合题。
1.
【正确答案】 Word From
1. comes 2. disturbing 3. overcoming 4. left 5. living
6. be regulated 7. flew 8. are known
2.
【正确答案】 Translation
1. The effects of rapid travel on the body are much greater than we realize.
2. He later blamed his poor judgement on Jet Lag.
3. Protein in meals stimulates wakefulness while carbohydrates promote sleep.
4. There is no short cut in the study of a foreign language.
5. What can we do in order to overcome Jet Lag?

• therefore [´ðeəfɔ:] ad.&conj.因此；所以 (初中英语单词)
• whereas [weər´æz] conj.鉴于；因此；而 (初中英语单词)
• promote [prə´məut] vt.促进；发扬；助长 (初中英语单词)
• account [ə´kaunt] vi.说明 vt.认为 n.帐目 (初中英语单词)
• lonely [´ləunli] a.孤独的；无人烟的 (初中英语单词)
• pressure [´preʃə] n.压榨 vt.对...施压力 (初中英语单词)
• despite [di´spait] prep.尽管 (初中英语单词)
• system [´sistəm] n.系统，体系，制度 (初中英语单词)
• international [,intə´næʃənəl] a.国际的，世界的 (初中英语单词)
• actually [´æktʃuəli] ad.事实上；实际上 (初中英语单词)
• judgement [´dʒʌdʒmənt] n.审判；报应；批评 (初中英语单词)
• overcome [,əuvə´kʌm] vt.战胜，克服 (初中英语单词)
• internal [in´tə:nl] a.内部的；国内的 (高中英语单词)
• regardless [ri´gɑ:dləs] a.不留心的；不关心的 (高中英语单词)
• relevant [´relivənt] a.有关的；中肯的 (高中英语单词)
• hinder [´hində, ´haində] vt.阻止 a.后面的 (高中英语单词)
• typical [´tipikəl] a.典型的；象征的 (高中英语单词)
• normally [´nɔ:məli] ad.正常情况下；通常 (英语六级单词)
• unlikely [ʌn´laikli] a.不像的；未必可能的 (英语六级单词)
• protein [´prəuti:n] n.蛋白质 a.蛋白质的 (英语六级单词)