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【简答题】
某用户装有220V、40W和25W白炽灯各3盏,若正常供电,每天用电3小时,一个月(30天)该用户消耗电能为____度;若每度电费2角钱,一个月应交____元。
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举一反三
【单选题】--Must I take a taxi?--No, you _______. You can take a car.
A.
had better to
B.
don't
C.
must not
D.
don't have to
【单选题】— Must I take a taxi? —No, you______. It is only a six minutes’ walk.
A.
don’t have to
B.
must C can’t D ought to
【简答题】世界各国在公务员的晋升方式上，主要有两种做法，一种是考试晋升，另一种是（）晋升。
【单选题】Must I take a taxi? No, you（）. You can take my car.
A.
had better to
B.
don't
C.
must not
D.
don't have to
【单选题】—Must I take a taxi? —No, you _____. You can take my car. [ ]
A.
don't have to
B.
had better to
C.
must not
D.
don't
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