流感病毒的核酸特点是()
A.一条完整的单负股RNA
B.分段的单负股RNA
C.分段的双股RNA
D.完整的双股DNA
E.分段的单股DNA
参考答案:B
在经济分析中,可以将建设项目对区域的影响效果进行( )分析,指出项目的各种经济影响后果。
A.定性
B.定量
C.定性或定量
D.定性和定量相结合
——Dad, please tell me when Mum_____. I miss her very much.
——She will return when she_____her task. And she will bring a nice present for you.
A.returns;finishes
B.returns;will finish
C.will return;finishes
D.will return;will finish