直接指导蛋白质合成的遗传物质是（）。
A.sDNA
B.dsDNA
C.tRNA
D.mRNA
E.rRNA
参考答案：D
—Guess what! I came across an old friend at the party last night.
—________ I’m sure you had a wonderful time.
A．Sound good!
B．Very well.
C．All right.
D．How nice!
以下（）业务不可代理办理。
A、活期一本通开户
B、密码挂失
C、个人通知存款提前通知
D、利生利开户
