主要因血小板破坏增多导致血小板减少的疾病是（） A.急性白血病_爱下问搜题

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问题单项选择题

主要因血小板破坏增多导致血小板减少的疾病是（）

A.急性白血病

B.肝硬化脾肿大

C.原发性血小板减少性紫癜

D.巨幼细胞贫血

E.骨髓纤维化

答案

参考答案：C

完形填空

阅读下面对话，从方框内 7 个选项中选择 5 个恰当的句子完成此对话，并将其番号填入题前括号内。

A. How old is it?
B. Where did you go?
C. Sounds interesting.
D. When did you go there?
E. There are many things to play with.
F. How do you like it?
G. How did you get there?

A. Jack, I hear that you’ve just come back from Hong Kong?小题1:
B. Oh, it’s wonderful. It’s one of the most interesting places I have ever seen.
A.小题2:
B. I went to many places, but I’m interested in Disneyland most.
A. Could you tell me something about it?
B. Well, it has lots of cartoon characters there, like Mickey Mouse, Donald Duck and so on.
A. 小题3:Tell me more about it.
B. 小题4:Such as the roller coaster.
A.小题5:
B. I went there by plane.

单项选择题

增加一单位商品销售所获得的收益被称为（）。

A.销售价格

B.平均收益

C.边际收益

D.总收益