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问题 单项选择题

下列对类固醇描述错误的有（）

A.是细胞膜的重要成分

B.是部分动物激素的前体物质

C.是重要的能量贮存物质

D.血液中类固醇含量高时易引起动脉硬化

答案

参考答案：C

单项选择题

净制厚朴时，应去

A．心

B．毛

C．芦

D．核

E．皮壳
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填空题

用括号里所给单词的适当形式填空。

1. I wish I _____(can go) to London for the Olympic Games．

2. She decided that she _____(visit) the World Expo in Shanghai.

3. Hearing the exciting news, we were beside _____(oneself) with happiness.

4. It can't hurt her _____(say) these words.

5.She wrote her name and phone number on the paper _____(care).
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