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？
