病毒在细胞内形成的包涵体的组成包括()
A.病毒抗原
B.病毒颗粒
C.病毒生物合成的产物
D.宿主细胞器
E.宿主核酸
参考答案:A, B, C
拉百商店有一批儿童套装,“六一”期间每套售价175元,比原来定价便宜30%,原来每套定价是多少元?
our textbook ,the English spoken in England in the past is very different from ____ spoken at present.
A.Based on; that
B.Bases on; that
C.Base on; one
D.Based on; it