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【判断题】
1 mol 大约含有 个 分子。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】根据句意 , 用括号中所给单词的适当形式填空。 1. He (study) many subjects at school . 2. Sometimes Steve ( swim) in the swimming pool. 3. The students ( have )a music lesson now.Listen!They ( sing ) a song . 4. Lisa (go) t...
【简答题】John is a famous writer now. But he said he was not a 1 student when he was young. He was often late for 2 and didn't like doing his homework. Sometimes, he slept in class while the teacher was...
【简答题】应用叠加定理,求得电流 I 为 A。
【单选题】Students sometimes support themselves by() of evening jobs.
A.
. ways
B.
offers
C.
means
D.
helps
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