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第1题
When can normal activities be resumed?
A.Right after take-off.
B.After the announcement.
C.After securing personal items.
D.Whenever one wishes.
第2题
A.gliding
B.cruising
C.piloting
D.patrolling
第3题
第4题
A.1975
B.1976
C.1977
D.1978
第5题
A. could stay
B. could have stayed
C. can stay
D. must have stayed
第6题
A.gliding
B.cruising
C.piloting
D.patrolling
第7题
(It is) very hard to believe (that when) Lincoln was born, communications were (a little) faster than (in the days) of Julius Caesar.
A.It is
B.that when
C.a little
D.in the days
第8题
第9题
A.body temperature changes when the cycle of sleep and wakefulness alternates
B.body temperature changes when he changes to night shift or back
C.the temperature reverses when the routine is changed
D.people have higher temperatures when they are working efficiently
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