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【简答题】
实验室用电安全，下面做法不正确的是（）。 A、清扫仪器时应关闭电源 B、严禁用湿抹布擦洗电器 C、电线浸湿后仍继续工作 D、遇触电事故迅速关电源或用绝缘物拨开电线
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举一反三
【单选题】(2006.10) An ______idea suddenly came upon him when he was taking a walk with his wife.
A.
ingenious
B.
ingenuous
【单选题】He seems _________the homework, for he was taking a walk on the playground. [ ]
A.
has finished
B.
to have finished
C.
to finish
D.
finished
【单选题】What was he thinking about while he was taking a walk on campus?
A.
His first day on campus.
B.
His lifelong friends.
C.
The four years of his college life.
D.
The excitement of becoming a college student.
【单选题】What was he thinking about while he was taking a walk on campus?
A.
His first day on campus.
B.
His lifelong friends.
C.
The four years of his college life.
D.
The excitement of becoming a college student.
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