卵巢良性囊性畸胎瘤最常见的并发症
A．蒂扭转B．破裂C．感染D．恶性变E．出血
参考答案：A
— Have you been here before?
— Yes. This is the third time that I ______ to Shanghai.
A．come
B．came
C．have come
D．had come
读压力表数值时，要使眼睛对准表盘刻度，眼睛、表针和刻度三者成（）。
A.平行
B.直线
C.倾斜
D.任意角度
