题目内容

We cant find him anywhere . Perhaps he ____home.

A. is going
B. went
C. has come
D. would come

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The teacher told us that the sun____ bigger than the earth.

A. is
B. was
C. has been
D. will be

Could you tell me where the railway station____?

A. was
B. is
C. will be
D. would be

糖酵解时哪一对代谢物提供P使ADP生成

A. 3-磷酸甘油醛及磷酸烯醇式丙酮酸
B. 1,3-二磷酸甘油酸及磷酸烯醇式丙酮酸
C. 1-磷酸葡萄糖及1,6-二磷酸果糖
D. 6-磷酸葡萄糖及2-磷酸甘油酸

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