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 Directions:
Read the following text.Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.( 10 points )

Most people who travel long distance complain of jetlag. Jetlag makes business travelers less productive and more prone_1_making mistakes. It is actually caused by_2_of your ¡°body clock¡±¡ªa small cluster of brain cells that controls the timing of biological_3_. The body clock is designed for a_4_rhythm of daylight and darkness, so that it is thrown out of balance when it_5_daylight and darkness at the ¡°wrong¡± times in a new time zone. The_6_of jetlag often persist for days_7_the internal body clock slowly adjusts to the new time zone.

Now a new antijetlag system is_8_that is based on proven_9_pioneering scientific research. Dr. Martin Mooreª²Ede had_10_a practical strategy to adjust the body clock much sooner to the new time zone_11_controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates_12_of the discomfort of jetlag.

A successful time zone shift depends on knowing the exact times to either_13_or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule _14_ light exposure depends a great deal on_15_travel plans.

Data on a specific flight itinerary and the individuals sleep_16_are used to produce a Trip Guide with_17_on exactly when to be exposed to bright light.

When the Trip Guide calls_18_bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,_19_you are on an aeroplane, you can use a special light device to provide the necessary light_20_for a range of activities such as reading, watching TV or working.

1. A. fromB. of C. forD. to
2. A. eruptionB. disruptionC. ruptureD. corruption
3. A. actionsB. functionsC. behaviorD. reflection
4. A. formalB. continualC. regularD. circular
5. A. experiencesB. possessesC. encounters D. retains
6. A. signs B. defectsC. diseasesD. symptoms
7. A. ifB. whereasC. whileD. although
8. A. agreeableB. availableC. adaptableD. approachable
9. A. extensive B. tentativeC. broad D. inclusive
10. A. devised B. scrutinizedC. visualizedD. recognized
11. A. inB. asC. atD. through
12. A. moreB. littleC. most D. least
13. A. shed B. retrieve C. seek D. attain
14. A. inB. forC. on D. with
15. A. specificB. complicatedC. uniqueD. peculiar
16. A. modeB. style C. norm D. pattern
17. A. directoriesB. commentaries C. instructions D. specifications
18. A. upB. offC. onD. for
19. A. orB. butC. andD. while
20. A. spurB. stimulusC. agitation D. acceleration

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1 D   2 B   3 B   4 C   5 C   6 D   7 C   8 B   9 B   10 A   11 D   12 C  13 C   14 B   15 A   16 D   17 C   18 D   19 A   20 B