《2025年轻松总复习暑假作业七年级英语》

A
Most of you may think of clams(河蚌) as part of delicious food. But these little things can do an important job: testing(测试) the cleanliness of water in nature and people’s drinking water.
The important water plant in Warsaw, Poland, gives water to its people there. It uses eight clams to help test the water every day.
Clams can find very small changes quickly in water. If the water is not very clean, the clams will close their shells(壳). People in the water station connect(连接) their shells to a computer. When four or more clams close their shells at the same time, the workers can get a tip(提示) from the computer quickly.
To make the clams always find very small changes quickly in water, the workers choose some new ones to work for them every three months. “It works well and it helps save people’s drinking water, rivers and lakes,” the worker in the water station said.
1. What important job can clams do according to the text?______
2. What will the clams do if the water is dirty?______
3. When can the workers get a tip from the computer?______
4. Why do workers change clams every three months?______
5. What do you think of the clams’ work?
______

答案： 1. Testing the cleanliness of water in nature and people's drinking water.
2. The clams will close their shells.
3. When four or more clams close their shells at the same time.
4. To make the clams always find very small changes quickly in water.
5. Useful. / It is useful. / They do a great job.

B
Cindy is not happy now. She wants to take a trip to a beautiful village with her classmates this Saturday, but her parents don’t let her go.
Her parents are a little strict with her. She must follow the family rules. She must finish her homework before she listens to music. She can’t watch TV or read a storybook on school nights. On Sunday mornings, she must learn to make some delicious food from her mother... She can play the piano on Sunday afternoons and she is good at it.
She also has to follow the school rules. She can’t be late for school. It takes her about twenty minutes to get to school on foot every weekday. She must keep her hair short. She can’t run in the classroom or in the hallway because it’s quite dangerous. Sometimes she can’t stand(忍受) some of these rules. Cindy’s best friend helps her know that her parents and teachers make these rules to help her. Now she thinks the rules are useful.
1. Where does Cindy want to go this Saturday?______
2. Who teaches Cindy to make delicious food?______
3. How does Cindy go to school?______
4. What rules must Cindy follow at school? (写出一个答案即可)______
5. What other school rules do you have? What do you think about it?
______

答案： 1. To a beautiful village. 2. Her mother.
3. On foot.
4. She can't be late for school. / She must keep her hair short. / She can't run in the classroom or in the hallway.
5. I can't use phones in class. I think it helps me focus on the class.