More and more teachers and parents have noticed another kind of pollution,____ came from the printed papers sold on streets.选项:a、itb、thatc、whichd、this pollution

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More and more teachers and parents have noticed another kind of pollution,____ came from the printed papers sold on streets.选项:a、itb、thatc、whichd、this pollution

More and more teachers and parents have noticed another kind of pollution,____ came from the printed papers sold on streets.选项:a、itb、thatc、whichd、this pollution
More and more teachers and parents have noticed another kind of pollution,____ came from the printed papers sold on streets.
选项:
a、it
b、that
c、which
d、this pollution

More and more teachers and parents have noticed another kind of pollution,____ came from the printed papers sold on streets.选项:a、itb、thatc、whichd、this pollution
which 非限制性定于从句, 必须用which 都好使标志,是修饰pollution的,如果后面的“____ came from the printed papers sold on streets.” 是个复杂, 就必须用and 连接, 但是他没有and 所以是个从句,非限制性定语从句必须用which不能用and

选C,如果没有中间那个逗号的话,B,C都可以

选C 前面的一句是完整的句子 which引导非限定性定语从句

c是正确答案。因为which引导非限制性定语从句,修饰another kind of pollution