题目
A.How many
B.How much
C.How often
D.How long
第1题
He has to remain() (警惕的) at all times as a pilot.
A、vigilant
B、convivial
C、victory
D、vigor
第3题
A.advantage
B.use
C.benefit
D.interest
第4题
A.brain
B.mind
C.head
D.thought
第5题
A.opposite
B.realistic
C.pessimistic
D.optimistic
第6题
A.has to
B.half a dozen
C.until
D.comes down
第7题
A.assurance
B.probability
C.reliance
D.conformity
第8题
A.has to
B.half a dozen
C.until
D.comes down
第9题
A、to give in
B、CDBto give up
C、to give out
D、to give off
第10题
A.has never been hurt
B.has never hurt
C.has never been hurting
D.never hurt
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