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- 1设函数f(x)=sin²x+sin2x+3cos²x(x∈R).
- 2All flights ___ because of the heavy snow,we had to take the train.
- 3What's today?如果换成yesterday怎么问?
- 4could you tell me how many students (there are )in your school now?为什么是用there are
- 5Can anyone of u tell me how to study Chinese well ,and how to pronounce well?THX
- 6摩尔质量是不是等于相对分子量
- 7some,to,take,remember,medicine.连词组句
- 8三角函数 cos2x+2根号3sinxcosx 化简, 具体点的步奏
- 9When the man hears that,he doesn't feel happy(改成because引导的原因状语从句)
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