阳偏衰，一般以哪些脏为主A．脾、肾B．心、肾C．肺、肾D．肝、肾E．肺、脾

log2(82×22)=______．

－I want to borrow the book, but I don’t know how long it may ______.

－For two weeks.

A．keep

B．be borrowed

C．borrow

D．be kept

More high-rise buildings are being built now even in some small cities _____ space.    [      ]

A. in search of    

B. in place of      

C. for lack of

D. for fear of

监狱武装警察负责监狱的（）。

A.警戒 

B.警戒和管理 

C.警戒和教育 

D.管理和教育

薄钢板是指厚度≤4mm的钢板。