关于RNA的叙述不正确的是( )
A:RNA可作为逆转录的模板
B:信使RNA是翻译的模板
C:信使RNA是氨基酸的转运工具
D:RNA中没有碱基T
我国人口的分布特点是( )
⑴Let's go to the library.____ A.
⑵School is over.It's time to go home.____ B.
⑶It's hot.I can swim.____ C.
⑷Today is snowy and cold.____ D.
⑸We have art class at 3 o'clock.____ E.