题目内容

Such a mistake would perhaps lead to terrible co________.

A. consequences
B. consequence
C. content
D. concern

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在分子筛层析时，分子量较小的蛋白质首先被洗脱出来

A. 对
B. 错

Now that you me________ it, I do remember seeing such a man.

A. men
B. mention
C. mental
D. menu

所有的肽和蛋白质都能和硫酸铜的碱性溶液发生双缩尿反应

A. 对
B. 错

He saw it as his d ________ to help the poor.

A. duty
B. dress
C. done
D. dry