单选题

No Jetlag(时差反应) Anymore

Most people who travel long distances complain of jetlag(时差反应). Jetlag makes business travelers less productive (对产的，有成效的) and more prone (51) making mistakes. It is actually caused by (52) of your "body clock"-a small cluster(串、组、群)of brain cells that controls the timing of biological (53) . The body clock is designed for a regular rhythm(节奏)of daylight and darkness, so that it is thrown out of balance when it experiences daylight and darkness at the "wrong" times in a new time zone. The (54) of jetlag often persist(持续) for days (55) the internal body clock slowly adjusts to the new time zone.
Now a new anti-jetlag system is available that is based on proven, (56) and pioneering scientific research. Dr. Martin Moore has devised a practical strategy to adjust the body clock much sooner to the new time zone (57) controlled exposure to bright light. The time zone shift(转换) is easy to accomplish and eliminates (消除) (58) of the discomfort of jetlag.
A successful time zone shift depends on knowing the exact times to either (59) or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule (60) light exposure depends a great deal on (61) travel plans.
Data on a specific flight itinerary (旅行路线) and the individual's sleep (62) are used to produce a trip guide with (63) on exactly when to be exposed to bright light.
When the trip guide calls (64) bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad, (65) you are on an air plane, you can use a special light device to provide the necessary light stimulus(刺激) for a range of activities such as reading, watching TV or working.

单选题 A. for B. from
C. to D. of

单选题 A. rupture B. corruption
C. eruption D. disruption

单选题 A. actions B. functions
C. reflections D. behaviors

单选题 A. diseases B. symptoms
C. signs D. defects

【正确答案】 B

【答案解析】[解析] 本题考查的是名词搭配与辨析。symptoms的意思是“症状，病症”；symptoms persist for days症状持续好几天；diseases“疾病(时差反应不是真正的病)”；signs"征兆，迹象”，虽然也可指病症，但是并不能表示某种反应的表现；defects意为“缺点，过失，欠缺”。与题意不符。

单选题 A. while B. whereas
C. if D. although

【正确答案】 A

【答案解析】[解析] 本题考查的是连接词的使用。本句意思是：在体内的生物钟慢慢地适应新的时区的过程中，时差反应的症状常常会持续好几天。根据本句的意思，空格处应该填表示时间的连接词，而不是转折或者假设。while是“正在……的时候”；whereas“而，却”；if“如果”；although“虽然(表让步)”。

单选题 A. broad B. inclusive
C. tentative D. extensive

【正确答案】 D

【答案解析】[解析] 本题考查的是形容词搭配与辨析。extensive“广泛的”，可以与scientific research搭配，句子意思也符合；broad“广阔的，宽的”，不能和research搭配。我们可以说broad support广泛的支持；broad knowledge广博的知识；inclusive“包含的，包括的”；tentative“实验性的，试探的，尝试的”，虽然也可以与scientific research搭配，但在本句中意义不符，因为一套可行的科学方案只能是建立在广泛可靠的研究基础之上，而不是仅仅尝试性的。

单选题 A. at B. through
C. in D. as

单选题 A. most B. least
C. little D. more

【正确答案】 A

【答案解析】[解析] 本题考查的是对表示程度的不定代词的掌握。空格所在的句子说摩尔博士设计的方法可以很容易地完成对新时区的调整，因此它可以eliminate most of the discomfort of the jetlag，消除时差反应带来的大部分不适。B项与C项都与该句意思相反，而D项是比较级，但原句中并没有出现与之相比较的词。

单选题 A. attain B. shed
C. retrieve D. seek

单选题 A. on B. with
C. for D. in

单选题 A. unique B. specific
C. complicated D. peculiar

【正确答案】 B

【答案解析】[解析] 本题考查的是形容词搭配与辨析。根据题意，本句所填的形容词的意思应该为“特定的”，即不同的光照接触依赖于不同的旅行计划。specific“特定的，明确的”，specific plan“特定的计划”；unique“唯一的，独特的”；complicated“复杂的”；peculiar“奇特的，奇怪的”，

单选题 A. norm B. mode
C. pattern D. style

单选题 A. directories B. instructions
C. specifications D. commentaries

【正确答案】 B

【答案解析】[解析] 本题考查的同样是对同义词、近义词的辨析。本题所填单词后接on，修饰Trip Guide。使用旅行指南的目的是为了得到“指导”。instructions“说明，指示，指导，指南”：directories“姓名地址薄”；specifications“说明书，规范”；commentaries“实况报道，解说词”。