题目内容

3.酸雨是指Ph<( )的降水

A. 4.5
B. 5.5
C. 5.6
D. 6.5

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人类活动产生的污染物或污染因素,进入环境的数量超过( )时,就会导致环境质量恶化,出现环境污染。

A. 环境现状
B. 环境容量
C. 环境浓度

When we talked about the correlation between language and culture, it is said that langue is an indispensable ________ of culture. Culture finds a better representation through language use.

A. tool
B. application
C. carrier
D. none of the above

The term category is used to refer to a group with certain features in _________ and we can think of the vocabulary we learn as an inherited set of category labels.

“Lexicalized” means “expressed as a ______ word”.

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