带有反转录酶的病毒有()
A.人类免疫缺陷病毒
B.EB病毒
C.单纯疱疹病毒
D.人 * * 瘤病毒
E.流感病毒
参考答案:A
解析:HIV病毒是双正股RNA病毒,并带有反转录酶。
---- _______________?
---- He looks tall and strong.
A.How is he?
B.How does he look like?
C.what does he like?
D.How is he like?
纯母乳喂养率在4个月内应大于或等于()。
A.60%
B.70%
C.80%
D.90%
E.100%