在急性乙型肝炎患者病程中下列哪项是最早出现的()
A.抗-HBc
B.HbeAg
C.HBsAg
D.抗-HBs
E.DNA多聚酶
参考答案:C
If you want to buy a desk, you should go to the _______. [ ]
A. florist
B. pet shop
C. sports shop
D. furniture shop
学校教育有哪些特点