流感病毒的核酸类型是
A.双股RNAB.单股负链RNAC.单股DNAD.双股DNAE.单股正链RNA
参考答案:C
—What do you think of your boss?
—He ’s kind-hearted. Not only _______ what to do, but also he lent me money.
A.he advised me
B.does he advised me
C.did he advise me
D.he advised to me
女性,29岁,贫血病史1年,浅表淋巴结不肿大,肝脾未触及,血象呈现全血细胞减少,若诊断再障,下列意义最大的是()
A.网织红细胞减少
B.骨髓增生低下,造血细胞减少
C.骨髓非造血细胞增多,NAP增加
D.铁粒幼细胞消失
E.巨核细胞增多