2.静静喜欢爬山，中国的五座名山她已经都去过了，下面是这五座名山的海拔，请你计算一下五座山的平均海拔。
泰山海拔1545米；华山海拔2155米；衡山海拔1300米，恒山海拔2016米，嵩山海拔1492米。

2. 1701.6米。

三、运动产生多巴胺。根据图片提示补全对话。
1. —Which season do you like best?
—I like , because I can .
2. —Can you ?
—Yes, .
3. —What do you often do on the weekend?
—I often .
4. —What is Bob doing?
—He .
5. —What do you like doing?
—I like .

1. summer; swim
2. play table tennis; I can
3. play basketball
4. is running
5. playing football

四、你知道你的好朋友们都喜欢做什么或正在做什么吗？将下面的单词按正确的顺序连起来，读一读，你就知道啦！
1. playing, park, are, football, the, in, they(.)

2. ride, he, horse, can, a(.)

3. swimming, pool, the, Lily, in, likes(.)

4. he, visit, Great, the, Wall, wants, to(.)

5. a, she, likes, book, picture, reading(.)

1. They are playing football in the park.
2. He can ride a horse.
3. Lily likes swimming in the pool.
4. He wants to visit the Great Wall.
5. She likes reading a picture book.