题目内容

Informal attire is considered a form of dress customarily appropriate for all formal settings that do not explicitly require white tie or black tie.

A. 对
B. 错

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In the European tradition, casual dress emphasizes comfort and personal expression.

A. 对
B. 错

The exposure for men and women is the tendency both in formal dress and casual wear.

A. 对
B. 错

脂肪胺类化合物比芳香胺类化合物的亲核性要更强。

A. 对
B. 错

一般有孤对电子或者带负电荷的离子或者分子具有亲核性。

A. 对
B. 错