In my job, I need to fix a lot of computer problems.
A. find
B. solution
C. solve
D. repair
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My parents were very helpful and agreed when I told them I wanted to become an electrician.
A. somewhere
B. supportive
C. sometimes
D. someone
反应分子数只能是正整数，一般不会大于三
A. 对
B. 错
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