先来读文章：
1.It is autumn.
这是秋天。
2.Leaves change color.
叶子变色。
3.Trees lose their leaves.
树木失去了叶子。
4.Acorns fall down.
橡子掉下来了。
再来读一遍完整的文章：
It is autumn.
Leaves change color.
Trees lose their leaves.
Acorns fall down.
根据短文，回答问题。
参考答案：
1.It is autumn.
2.Leaves change color.
3.Acorns fall down.
