荷叶可以用来做什么？想一想，填一填。
下雨了，荷叶可以做我的____。
词跟诗真正的差别是在哪里？（ ）
—Let’s give her some books __________ her birthday.
—That’s a good idea!
I have never talked about my private life with other people.
的公比为正数，且
·
=2
，
=1，则
=（ ）
