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【单选题】
电流周围存在着磁场的现象称为 。A.
电磁感应
B.
电流的磁效应
C.
愣次定律
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皮皮学刷刷变学霸
举一反三
【单选题】Henry___________ be at home because he phoned me from the farm just now. [ ]
A.
mustn't
B.
isn't able to
C.
may not
D.
can't
【单选题】()年手握型高脚的竞速和对抗竞赛成为正式比赛项目,首次登上了政府举办的体育赛场,初步实现了由民族民间娱乐项目向体育竞赛项目的转化。
A.
1986
B.
1999
C.
1987
D.
1989
【简答题】根据句意及首字母提示完成单词。 1. Here is a p ______ of my family. 2. Jim is my c______ he isn't my brother. 3. My father and mother are my p ______ . 4. T______ for your pen.
【单选题】Joe isn't short. ______ , he is quite tall.
A.
On the contrary
B.
In any way
C.
In balance
D.
On the whole
【单选题】He said he would pick me up at the school gate. However, he ______ yet. [ ]
A.
didn't arrive
B.
doesn't arrive
C.
isn' t arriving
D.
hasn't arrived
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