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问题 单项选择题 A1/A2型题

巨幼细胞性贫血发病的机制为（）

A.血红蛋白合成障碍

B.DNA代谢障碍

C.细胞凋亡过度

D.能量代谢障碍

E.RNA代谢障碍

答案

参考答案：B

补全对话，情景问答
从B栏中找出A栏各句的适当答语。

                                       A                          
( )1.Do you do your homework every day?                  
( )2.What's your favorite sport?
( )3.What time is it?
( )4.Where do you live?
( )5.What color are the pants?

                  B
A. In Beijing.
B. They are blue.
C. Playing baseball.                                       
D. Yes. I do
E. It's six o'clock.
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单项选择题

单护盾TBM施工时，其安装调试及拆除费用的计算应选用双护盾TBM安装调试及拆除定额并乘（）的调整系数。

A.8

B.1

C.9

D.25
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