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问题 单项选择题 A型题

Ⅰ型超敏反应不具有的特点（）

A.有明显的个体差异和遗传倾向

B.无补体参与

C.发生和消退迅速

D.免疫病理作用以细胞破坏为主

E.肥大细胞和嗜碱粒细胞均参与

答案

参考答案：D

名词解释

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选择题

During the war there was a serious lack of food. It was not unusual that even the wealthy families

had to ________ bread for days.[ ]

A. eat up          

B. give away      

C. do without      

D. deal with
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