I knocked on the door several times but_爱下问搜题

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问题选择题

I knocked on the door several times but _______ answered, so I left. [ ]

A. somebody

B. nobody

C. anybody

D. everybody

答案

答案：B

单项选择题

What does the woman ask the man to do
[A] She asks him to stand up.
[B] She asks him to sit down.
[C] She asks him to wait.

单项选择题 A1/A2型题

癌性胸水具有下列特点中的（）

A.比重小于1.018

B.蛋白含量低于3g/dl

C.细胞总数不超过100个/μl

D.LDH含量高于血清

E.胸水蛋白／血清蛋白<0.5