下列词句中,描写生物遗传的是( )
—Don't late, Betty. You have to go to school early tomorrow.
—OK, Morn. I'll go to bed right now.
①合作者 ②引导者 ③参与者 ④遵从者
按所给儿歌的形式,自编儿歌,并且念一念。
A ruler, a rubber,
I can see.
A. ruler, a rubber,
for you and me.
(提示:可将ruler,rubber改为book,pencil等)