单项选择题

A．Many species have developed a habit of migration.
B．Many species have become less sensitive to climate.
C．Many new species have come into existence.
D．Many species have moved further north.
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单项选择题
A．Both are fast-moving sports.B．Both depend on good tactics.C．Both provide a lot of exercise.D．Both require a lot of training.
A．Both are fast-moving sports.
B．Both depend on good tactics.
C．Both provide a lot of exercise.
D．Both require a lot of training.
单项选择题
A．He thinks flies will take over the earth.B．He thinks human will die off quite soon.C．He thinks mass disease could be the next path to extinction.D．He sees human beings as destructive.
A．He thinks flies will take over the earth.
B．He thinks human will die off quite soon.
C．He thinks mass disease could be the next path to extinction.
D．He sees human beings as destructive.
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