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问题 单项选择题 A1/A2型题

双向扩散试验平板法中若出现多条沉淀线，说明（）。

A.抗体含量大

B.抗原含量大

C.抗体或抗原缺乏

D.抗体和抗原皆不是单一成分

E.抗体和抗原皆过剩

答案

参考答案：D

填空题

现代主义的关键因素（）和（）。
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单项选择题


Passage 1

According to the local copper in the south London neighborhood of Battersea: a. the people there did not have significant improvement in their housing condition b. the people need to be more open-minded c. the people need to be more civilized d. the people need to have wider access to education
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