关于尿素酶试验，叙述错误的是（） A.是一种氨基酸代谢试验 B.

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问题单项选择题

关于尿素酶试验，叙述错误的是（）

A.是一种氨基酸代谢试验

B.分解底物是尿素

C.常用尿素培养基

D.阳性时培养基变酸性

E.是肠道杆菌科细菌鉴定时常用试验

答案

参考答案：D

选择题

It's time get up.[ ]

A. to

B. for

C. at

填空题

用所给单词的适当形式填空。

1. The art of (taste) tea is more important than the art of drinking tea.

2. My friend Tom pretended (like) the gift.

3. She used to (wear) a red coat.

4. Would you mind (pass) the book to me?

5. He prefers (give) to receiving.