侵蚀性葡萄胎最常见的转移部位是
A.肝
B. * *
C.盆腔
D.脑
E.肺
参考答案:E
A. which B. where C. in which D. there
方程:2x-4=0的解是( )
A.x=1
B.x=-1
C.x=2
D.x=-2