某男，原体重70kg，失水后烦躁，心率加快，血清钠158mmol／L，现体重67kg

失水的程度属于（）

A.轻度

B.中度

C.重度

D.极重度

E.以上都不是

The building ______ stone and each stone ______ more than two tons (吨).  [ ]

A. is made of; weighed

B. is made of; weights

C. is made of; weighs    

D. is made from; weighs