6. Scientists doubt whether it’ s_________to regulate one’ s biological clock bydrinking.
A. feasible
B. incredible
C. fashionable
D. valuable
答案: A
7. You’ d better leave things________if you don’ t know how to deal with them.
A. lonely
B. only
C. lone
D. alone
答案: D
8. The room was quiet, _________the occasional coughing from my throat.
A. in case
B. except for
C. by far
D. instead of
答案: B
9. So far scientists have only acquired_________understanding of the physicalprocesses that cause earthquakes.
A. a partial
B. a changeable
C. an original
D. an individual
答案: A
10. The profit-sharing plan is designed to_______the staff to work hard.
A. calculate
B. demonstrate
C. speculate
D. motivate
答案: D
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