When did the Tower begin to lean？
At the beginning of its construction.
B. In the middle of its construction.
C. When the construction was finally finished.
D. Nobody knows about it.
Over the past few years medical researchers______for a means of controlling the virus.
A. have searching
B. are searching
C. have been searching
D. search
The passage implies that______.
A. fewer men are working now than ever before
B. more women are engaged in part-time rather than full-time employment
C. more women are working now than ever before
D. more women were unemployed than men in the last recession
A．telegramB．planeC．trainD．ship
A. telegram
B. plane
C. train
D. ship
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