题目内容

请选择（4）处的最佳答案．

A. falls
B. removes
C. results
D. comes

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当发生人身触电事故时，应立即断开电源，使触电人员与带电部分脱离，并立即进行急救。在切断电源之前禁止其他人员直接接触触电人员。()

A. 正确
B. 错误

请选择（8）处的最佳答案．

A. losing
B. wasting
C. spending
D. giving

Married couples usually enjoy_________

A. more luxuries
B. better salaried positions
C. better tax advantages,
D. both A and B

Bright light from such big cities as Los Angeles has reduced the scientific value

A. Right
B. Wrong
C. Not mentioned