You are 45 kilograms. I'm 52 kilograms.
I'm than you.
A:thinner
B:heavier
C:smarter
I think it's better____ ____ ____your partner about the matter.
手拉手,找朋友。(将下列单词及中文释义配对。)
A.十九个男孩
B.十八张贴纸
C.一些贴纸
D.一些好看的猫
E.一些玩具汽车
⒈some stickers ____
⒉some toy cars ____
⒊eighteen stickers____
⒋some nice cats ____
⒌nineteen boys ____
下列过程中,涉及肽键数量变化的是