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问题 单项选择题

列有关各种药物皮试液浓度(0.1ml含量)的描述正确的是()

A．青霉素500U

B．链霉素2500U

C．破伤风抗毒素150U

D．普鲁卡因25mg

E．细胞色素C0.075mg

答案

参考答案：E

单项选择题

在下列几种故障中，不破坏数据库内容的是______

A．计算机病毒发作
B．供电系统故障
C．瞬时的强磁场干扰
D．磁盘介质损坏
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填空题

用所给单词的适当形式填空。

1. The girl is very quiet and doesn't enjoy _____ (go) to the party.

2. Wei Hua has _____ (curly) hair than Li Hong.

3. Her skirt is _____ (red) than mine.

4. The young man is _____  (unfriendly) than the old man.

5. He is _____ (tall) of the two.

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