一、按要求转换句型。
1. The birds fly. (改为现在进行时)
2. Tim is counting insects. (对画线部分提问)
3. Is the rabbit jumping? (作肯定回答)
4. I go to school at 7:30 a. m. (对画线部分提问)
5. Can birds fly? (作肯定回答)

1. The birds are flying.
2. What is Tim doing?
3. Yes, it is.
4. When do you go to school?
5. Yes, they can.

二、把下列句子重新排列顺序,组成一段对话。
( )Hey! What are you doing? Are you eating lunch?
( )No, we aren't. We are doing an experiment.
( )What experiment?
( )Come and have a look at the ants.
( )That's interesting.

【解析】：这段对话是关于询问正在做什么以及回应做实验的内容。首先，一方打招呼并提问“Hey! What are you doing? Are you eating lunch?”（嘿！你们在做什么？你们在吃午饭吗？），这是对话的开头，所以排第1。接着另一方回答“No, we aren't. We are doing an experiment.”（不，我们没有。我们在做实验。），回应了前面的问题，排第2。然后提问者继续问“What experiment?”（什么实验？），排第3。之后邀请对方“Come and have a look at the ants.”（过来看看蚂蚁。），解释实验内容，排第4。最后对方表示“That's interesting.”（那很有趣。），作为结尾，排第5。
【答案】：1 2 3 4 5

三、根据短文内容,判断下列句子正误,正确的写“T”,错误的写“F”。
Betty and Kitty are twins. They're 12 years old. They look the same. But they have different(不同的) hobbies(爱好). Betty likes collecting stamps(集邮). She has many beautiful stamps. They're from different cities(城市) and countries(国家). But Kitty likes growing flowers. The flowers are all very beautiful. Betty and Kitty both like reading books. Betty likes reading storybooks. But Kitty likes reading science books. On Sunday, they usually ride bikes to the park. They can play with their friends there. Sometimes their parents go there, too.
( )1. Betty is Kitty's sister.
( )2. Betty likes growing flowers.
( )3. Kitty likes reading storybooks.
( )4. They're twelve years old.
( )5. They usually take a bus to the park on Saturday.

【解析】：
1. 根据短文内容，Betty和Kitty是双胞胎，因此Betty是Kitty的姐妹，所以第1题是正确的。
2. 短文中明确提到Betty喜欢集邮，而Kitty喜欢种花，所以第2题是错误的。
3. 短文中说Kitty喜欢阅读科学书籍，而不是故事书，所以第3题是错误的。
4. 短文中明确提到她们12岁，所以第4题是正确的。
5. 短文中提到她们通常在周日骑自行车去公园，而不是在周六乘公交车，所以第5题是错误的。
【答案】：
1. T
2. F
3. F
4. T
5. F