遗传信息从RNA→RNA途径是对中心法则的补充，下列能够进行该传递的生物是[ ]
A．烟草
B．烟草花叶病毒
C．噬菌体
D．大肠杆菌
答案：B
If you are a little careful, I think you can _____the problem.
A．get over
B．get in
C．get on
D．get off
The next morning she found the man in bed, _______ dead. [ ]
A. lying
B. lie
C. lay
D. laying
