近代图书馆主要标志是（）的出现。

When Nancy was at college, she ______ three foreign languages. But I am surprised to find that she ______ all except a few words of each.

A．spoke; had forgotten

B．had spoken; had forgotten

C．spoke; has forgotten

D．had spoken; has forgotten

脾在五轮学说中为（）

A.水轮

B.风轮

C.气轮

D.血轮

E.肉轮

4元5角8分=______元3.05千克=______千克______克．

维生素D缺乏性佝偻病口服维生素D预防量是（）

A.200IU

B.400IU

C.1000IU

D.2000IU

E.4000IU

正中孔梗阻引起扩张的脑室是（）

A.侧脑室、三脑室、四脑室

B.侧脑室、三脑室、四脑室、六脑室

C.侧脑室、三脑室、五脑室、六脑室

D.侧脑室、三脑室、四脑室、五脑室

E.侧脑室、三脑室、四脑室、导水管