题目内容

Mr. White treated the girl___________ his own daughter.

A. with
B. for
C. as
D. of

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The food is surely ___________. It tastes very good and I enjoy eating it.

A. expensive
B. enough
C. strong
D. delicious

School days are said ___________ the happiest days in one′ s lifetime.

A. being
B. to be
C. have been
D. are

生物多样性不包括()

A. 遗传多样性
B. 物种多样性
C. 环境多样性
D. 生态系统多样性

以下能够起到特异性免疫作用的是()

A. 抗体
B. 补体
C. 干扰素
D. 巨噬细胞

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