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创业基础课程成绩的组成

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What kind of party was the writer’s brother invited to?A ____party.

Did the writer’s brother know the birthday boy? Who invited the writer’s brother?My brother didn’t know the birthday boy , but the boy’s ____had invited him.

Did the birthday boy know the writer’s brother? How do you know?No, he didn’t. Because he pointed at my brother and ,“Who is he”.

下面哪些污染物不是分子态污染物（）

A. TSP
B. NOX
CO
D. H2S