【名词&注释】
工业废水(industrial wastewater)、怎么说(how to say it)
[判断题]任意排放工业废水和生活污水，滥用化肥和农药，都会导致水体污染。 （ ）
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举一反三：
[单选题]8． —What is this in English ?—______．
A. It ’s a watch
B. Yes，it is
C. It's red
D. This is not mine
[单选题]My friend _____ me. I have to leave now.
A. waits for
B. waited for
C. is waiting for
D. was waiting for
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