选择题:A break between classes is very important for students because it ________helps

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题目内容:

A break between classes is very important for students because it ________helps with students' health by doing sports _______improves their social skills by communicating with their classmates.

A.too; to

B.either; or

C.neither; nor

D.not only; but also

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答案解析:

已知函数 f(x) =lg(|x﹣ m|+|x﹣ 2|﹣ 3)(m∈R).(1) 当 m=1, 求函数 f(x) 的定义域;(2) 若不等式 f(x) ≥0 对

已知函数 f(x) =lg(|x﹣ m|+|x﹣ 2|﹣ 3)(m∈R).(1) 当 m=1, 求函数 f(x) 的定义域;(2) 若不等式 f(x) ≥0 对于 R 恒成立, 求实数 m 的取值范围

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A.有最大项,有最小项

A.有最大项,有最小项

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—It’s sunny outside. Why not go out and have a look?—There ____ is here. I just

—It’s sunny outside. Why not go out and have a look?—There ____ is here. I just want to have a rest.

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—Do you know who _______ my dictionary? I can’t find it.—Sorry, I don’t konw, ei

—Do you know who _______ my dictionary? I can’t find it.—Sorry, I don’t konw, either. I was out just

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—What are you doing over there?—I’m ________a photo of our family on the wall.

—What are you doing over there?—I’m ________a photo of our family on the wall.

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