单项选择题

A．They found ways to speed up the reproduction of bald eagles.
B．They developed new types of feed for baby bald eagles.
C．They explored new ways to hatch baby bald eagles.
D．They brought in bald eagles from Canada.
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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.
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.
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