My little sister is to a song now.[ ]
A. listen
B. listens
C. listening
D. listened
答案:C
宿翳相当于西医学之:
A.白内障B.霰粒肿C.玻璃体积血D.前房积血E.角膜瘢痕
药物埋植避孕法的使用日期是在月经周期的:
A.1~7天
B.8~10天
C.15~20天
D.月经期
E.月经前