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【单选题】
To survive in the intense market competition, we must ______ the qualities and varieties of products we make to the world-market demand.A.
improve
B.
guarantee
C.
gear
D.
enhance
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举一反三
【单选题】We must face the fact __________ our time is limited and we must cherish every minute.
A.
which
B.
on which
C.
that
D.
Why
【单选题】In order to inspect both piston and cylinder wall thoroughly, the cylinder cover should be taken off and the piston should be （）.
A.
craned out
B.
rolled out
C.
lifted out
D.
turned out
【单选题】Belief We all believe in something or someone. We must believe, just as we must eat, sleep, and reproduce. Mankind has an insatiable need for and an irresistible attraction to a vast array of beliefs ...
A.
Faith.
B.
Trust.
C.
Security.
D.
Hope.
【简答题】The children are all Y__________________ Pioneers．
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