_____ 2000 people took part in the game. [ ]
A. More then
B. More
C. Over
答案:C
可引起垂直传播的病毒有()
A.HBV
B.HIV
C.HSV
D.CMV
E.风疹病毒
青年女性,乳腺超声发现边界光滑整齐,均匀的低回声()
A.乳腺囊肿
B.乳腺叶状囊性肉瘤
C.乳腺纤维瘤
D.乳腺囊性增生
E.乳腺髓样癌