题目内容

氨基酸只在等电点处有缓冲作用。()

A. 正确
B. 错误

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【B2】

A. skeptical
B. practical
C. careless
D. uncertain

听力原文:How does the hair drier work?
(25)

A. Remove it.
B. Replace it.
C. Press a button.
D. Not mentioned.

听力原文:What is there under the TV?
(26)

A book.
B. A remote controller.
C. A mini-bar.
D. A pencil.

The writer applied for the job because ______.

A. he could no longer afford to live without one
B. he wanted to work in the center of London
C. he had received suitable training
D. he was not interested in any other available job

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