洁净区内应当避免使用（）的容器和物料。

短文写作。

    You are supposed to write a composition on the topic Making Friends Selectively or

Extensively? You should write about 120 words and base your writing on the outline given below:

1.有些人认为应该有选择地交朋友

2.另一些人认为应该广泛地交朋友

3.你的看法

                                     Making Friends Selectively or Extensively? 

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