题目内容
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。
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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.
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”.
We use the term culture to refer to all the ideas and assumptions about the nature of things and people that we learn when we become members of social groups.
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