I like ___________ skip with the skipping rope. [ ]
A. /
B. to
C. too
D. two
答案:B
1/2,2/3,3/4,( )
A.1/5
B.5/6
C.3/7
D.4/5
可鉴别平滑肌肿瘤和纤维组织细胞瘤的标志物为()
A.CK
B.Vimentin
C.laminin
D.calretinin
E.EMA