单项选择题

We wouldn' t lose heart even if we () again.

A. would fail
B. failed
C. had failed
D. fail

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单项选择题

It's bad policy for developing countries to sacrifice environmental protection to ()economic growth.

A. discourage
B. weaken
C. promote
D. create

单项选择题

I'd rather marry a man who had a(n) () of humour than one who was very attractive.

A. capability
B. sight
C. knowledge
D. sense

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