乙肝病毒感染()戊型肝炎()甲型肝炎()
A.HBsAg阳性
B.抗-HAV阳性
C.抗-HEV阳性
D.抗-HBs阳性
E.抗"O"阳性
参考答案:A,C,B
Government should make sure ____ all sculptures are kept well when removed.
A.that
B.if
C.whether
D.how
He is tall, _____ his son is short.
A. or B. while C. and