关于宫内节育器的并发症,错误的是()
A.子宫穿孔,宫内节育器异位
B.宫内节育器嵌顿
C.月经过多
D.盆腔炎
E.宫颈糜烂
参考答案:E
分解因式:-x2+4xy-4y2。
The artist captured the girl’s personality in his photograph.
A. distorted B. caughtC. masked D. flattered