4　How we grow 

一、听录音，用1—4给下列图片排序。

1.In spring, the sun and the rain help plants grow.

2.The grains are ready to harvest in summer.

3.Winter is cold. The snow keeps the plants warm.

4.In autumn, the seeds are planted. Soon the new plants start to grow.

二、 听短文，选择正确的答案。

Hello, we’re plants. Do you know how we grow? It’s warm. We need the sun. We begin to grow. It’s a little hot. We need the rain to grow big. It’s hot. The flowers come out. We need the wind. It’s cool. We grow strong and fruitful.