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【单选题】
以下哪位人物提出了‚文化中国的观点？（）A.
B.
C.
D.
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反馈参考答案：
举一反三
【判断题】将具有通带截止频率 ω H 的二阶有源低通滤波电路与具有通带截止频率 ω L 的二阶有源高通滤波电路相串联,当 ω H 小于 ω L 时,可得二阶有源带通滤波电路。
A.
正确
B.
错误
【简答题】Text 2 Life learning( sometimes called un-schooling or self-directed learning)is one of those concepts that are almost easier to explain by saying what it isn't, than what it is. And that's probably b...
【单选题】Paragraph 2__________
A.
Ways to Learn a Language Successfully
B.
Learning a language Purposefully
C.
Learning a Language Actively
D.
Learning a Language Independently
E.
Learning from Mistakes
F.
Learning to Think in the Target Language
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