骶尾部和颅底部好发：（）
A.脊索瘤
B.骨髓瘤
C.骨肉瘤
D.骨囊肿
E.巨细胞瘤
参考答案：A
With the decision ______, the members present at the meeting were dismissed(解散).
A．to make
B．to be made
C．made
D．having made
我国煤、铁、石油都丰富的省区是[ ]
A．广东、福建
B．河北、辽宁
C．河南、山东
D．重庆、四川
