单选题：Light pollution results entirely from the ineffective use of

题目内容：

Light pollution results entirely from the ineffective use of electric lights． A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

He presented a new approach．

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会场的大小要根据会议的（　）而定。A．性质 B．时间 C．规模 D．作用

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Which of the following statement about a friend’s influence is false according t

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The United States Census Bureau recently released a new report on the situation．

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