PM2．5是指大气中直径小于或等于2．5微米的颗粒物。2．5微米以下的细颗粒物主要来自化石燃料的燃烧等，为了减少大气污染，我们应该少用自化石燃料。以下不属于化石燃料的是  （　　）

—OK. Let's go to the dining hall. The food there is delicious.

每个人都热爱自己的家乡，家乡的一山一水、一草一木无不牵动着我们的心。请以家乡的景物为题材，写一篇习作。

从方框中选词并用其适当形式填空

Australia, 　play, 　swim, 　two, 　my

⑥Shu-How Lin is one of the famous basketball____.

⑦Welcome these ____ friends to our school.

⑧ Would you like to go ____ with me this Sunday?

⑨—What are you going to do tomorrow?

—Enjoy ____ on the beach.

⑩ Monday is the ____ day of the week.

种子在具备适宜的温度、充足的空气和一定的水分条件下就能萌发。（   ）