单项选择题

A．It has threatened the normal life of other animals.
B．It"s an example of victims of habitat destruction.
C．It"s the most special sea life in these two countries.
D．It has totally disappeared from these two countries.
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单项选择题
A．Scientists are more creative.B．There s no upward trend.C．New inventions are springing.D．There s a boom in business.
A．Scientists are more creative.
B．There"s no upward trend.
C．New inventions are springing.
D．There"s a boom in business.
单项选择题
A．The interpersonal relationship.B．The high pressure.C．The servant system.D．The rapid progress.
A．The interpersonal relationship.
B．The high pressure.
C．The servant system.
D．The rapid progress.
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