单项选择题

A．Storms and floods.
B．Disease and fire.
C．Less space for their growth.
D．Rapid increase of the animal population.
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单项选择题
A．The man cannot spell her name.B．She misplaced her class card for biology.C．She missed registration.D．She arrived for registration too early.
A．The man cannot spell her name.
B．She misplaced her class card for biology.
C．She missed registration.
D．She arrived for registration too early.
单项选择题
A．Many species have moved further north.B．Many new species have come into existence.C．Many species have developed a habit of migration.D．Many species have become less sensitive to climate.
A．Many species have moved further north.
B．Many new species have come into existence.
C．Many species have developed a habit of migration.
D．Many species have become less sensitive to climate.
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