题目内容

The natural order hypothesis is presumed by Krashen to be the result of the learned system, operating free of conscious grammar.()

A. 对
B. 错

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照度是发光体的光源特性。

A. 对
B. 错

简答题 决定一项旅游资源价值大小的主要因素有哪些?

For Krashen, the affective filter is the principal source of individual difference in second language acquisition.()

A. 对
B. 错

反射式测光表用来测定被摄体表面一定区域亮度。

A. 对
B. 错

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