单项选择题

A．Whether it can be detected and checked.
B．Whether it will lead to widespread food shortage.
C．Whether global warming will speed up in the future.
D．Whether it will affect their own lives.
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单项选择题
A．Trying to persuade the woman to vote for him.B．Running for chairman of the student union.C．Choosing a campaign manager.D．Selecting the best candidate.
A．Trying to persuade the woman to vote for him.
B．Running for chairman of the student union.
C．Choosing a campaign manager.
D．Selecting the best candidate.
单项选择题
A．50 underground stations were made waterproof.B．A flood wall was built.C．An alarm system was set up.D．Rescue teams were formed.
A．50 underground stations were made waterproof.
B．A flood wall was built.
C．An alarm system was set up.
D．Rescue teams were formed.
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