题目内容

去离子水水质要求

A. 应符合中国药典标准
B. 应符合卫生部生活饮用水标准
C. 参照中国药典蒸馏水质量标准
D. 应符合卫生部颁发标准
E. 应符合工艺需要

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Almost all her life.
B. Less than half her life.
C. Until the year of 1830.
D. Before the year of 1872.

A. a thing of the past
B. an established practice
C. on the way of rising
D. not so serious as the public think

A. write a note to Professor Smith.
B. Wait a minute for Professor Smith.
C. Give a message to Professor Smith.
D. Return Professor Smith’s notebook.