20%～50%葡萄胎并发（）
A.卵泡囊肿
B.皮样囊肿
C.黄素囊肿
D.黄体囊肿
E.多囊卵巢
参考答案：C
动点P到直线x+y-4=0的距离等于它到点M（2，2）的距离，则点P的轨迹是（ ）
A．直线
B．椭圆
C．双曲线
D．抛物线
His eyes were Della, and there was in them that she could not .
A．fixed on; expression; read
B．fixing upon; expression; believe
C．fixed on; an expression; find
D．fixed upon; an expression; understand
