单项选择题

A．They’ve met before.
B．He does not remember her.
C．She agrees with him.
D．They have never met befor
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单项选择题
A．It was decreasing.B．It was increasing.C．It remained almost unchanged.D．It was going up slowly.
A．It was decreasing.
B．It was increasing.
C．It remained almost unchanged.
D．It was going up slowly.
单项选择题
A．Nuclear reactors can be of little use to people.B．Radiation is dangerous, so is nuclear energy.C．Nuclear energy poses a big threat to the safety of the population.D．Nuclear energy is human being’s best hope for the futur
A．Nuclear reactors can be of little use to people.
B．Radiation is dangerous, so is nuclear energy.
C．Nuclear energy poses a big threat to the safety of the population.
D．Nuclear energy is human being’s best hope for the futur
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