世界各大洲中,四周被大洋环绕的是:[ ]
A.亚洲
B.非洲
C.南美洲
D.南极洲
答案:D
The room is _____ for us _____. [ ]
A. enough big; live
B. enough big; live in
C. big enough; to live in
D. big enough;living in
水压试验条件和试验准备工作有哪些?