Some teenagers hold the view that parent_爱下问搜题

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问题选择题

Some teenagers hold the view that parents _____ a full understanding of their children.

A. lack in
B. lacking of
C. lack of
D. lack

答案

答案：D

单项选择题 A1/A2型题

所有B淋巴细胞具有的分化抗原是（）

A.CD34

B.CD10

C.CD38

D.CD19

E.CD3

判断题

焦炉集气管压力波动只受鼓风机吸力波动的影响。