1. 写出下列图片所表示的英语单词的第一个字母，并用这些字母组成一个新单词。Write out the word.

dear

2. 用括号中所给词的适当形式填空，完成下列各句。Complete the sentences.
(1) There are some ________ (cloud) in the sky.
(2) Look! There are two ________ (aviary) in the zoo.
(3) Cats like to eat ________ (mice).
(4) The tree has many long ________ (branch).
(5) What are they doing? They are ________ (write).

1. clouds 2. aviaries 3. mice 4. branches 5. writing

3. 根据提示回答问题。Answer the questions.
(1) What's on the farm?(许多动物)
There are ________ ________ on the farm.
(2) How many cows has he?(13)
He has ________ cows.
(3) What do horses like?(干草)
They like ________.

1. many animals 2. thirteen 3. hay

做一做
自动喷泉

想一想：为什么会出现喷泉？可以用热水替代热毛巾吗？(使用热水或热毛巾时注意安全)你还能用瓶子做什么小游戏？

热毛巾给瓶加热使瓶内空气膨胀气压变大，将水压出形成喷泉。
可以。
如在瓶中装不同量水敲击听音调高低（答案不唯一）。