题目内容

Her wish was that he __________ at Beijing University at once

A. studies
B. studied
C. study
D. will study

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下列变化对肌红蛋白和血红蛋白的氧亲和力有什么影响? (1)血浆pH从7.4降到7.2; (2)肺中CO2分压从45 torr降到15 torr; (3)BPG水平从4.5 mmob/L增到7.5 mmol/L。

--- Do you mind if I join you? --- __________ .

A. I’m very happy to do so
B. Never mind
C. Please do
D. Oh, I can’t

The government official explained that there’s no point ___________ about the cultural gap

A. to worry
B. with them worrying
C. in worrying
D. worry

--- Sorry to interrupt, but can you give me another copy of the handout? --- __________ .

A. No, of course not
B. Certainly
C. I’m sorry to hear that
D. By no means, but it’s impossible

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