《2025年家庭作业九年级英语上册人教版》

Ⅰ. 阅读理解
话题: 云的形成原理 难度: ★★★ 建议用时: 5'
Look up to the sky. Do you see any clouds? What do they look like? At sunrise and sunset, clouds can look red, purple or yellow—as if they were colored with crayons. You can’t reach out and touch the clouds, but you can make your own in a jar.
What do you need?
a huge, empty glass jar
a metal strainer
hot water
ice
What do you do?
Step 1: Fill the jar with hot water. Leave it there for two minutes, and then pour out most of the water, leaving just 3 - 5 cm at the bottom of the jar.
Step 2: Put the strainer over the mouth of the jar. Fill the strainer with ice. Watch the jar.
What happened?
A cloud formed in the jar! Some of the hot water at the bottom of the jar turned into hot water vapor (蒸汽). The water vapor rose and met with the cold air coming off the ice. When the water vapor condensed (凝结), it formed a cloud. Hot air rises and carries with lots of water vapor. The higher the air rises, the more it cools down. Soon the cold air can’t hold all the water vapor so it starts turning into tiny water drops and becomes a cloud.
(C) 1. We need the following things except ________ to make a cloud.
A. a jar
B. a strainer
C. crayons
(A) 2. The last paragraph is mainly to tell us ________.
A. how clouds form
B. the importance of the experiment
C. why the experiment was conducted
(C) 3. We can see the passage ________.
A. on a school noticeboard
B. on a poster about kitchen
C. in a science magazine

答案： 1. C 2. A 3. C

Ⅱ. 短文填空
阅读下面短文, 在空白处填入一个适当的单词(有提示词的, 填入所给单词的正确形式)。
话题: 国际茶日 难度: ★★ 建议用时: 8'
May 21, 2020 marks the first International Tea Day (ITD). It was 1 (name) by the UN on Nov. 27, 2019. ITD is more than about celebrating the delicious drink. It also 2 (try) to improve the working conditions of tea farmers and workers. It makes the public know the 3 (important) of tea all over the world.
Tea is the world’s 4 (two) most popular drink after water. 5 (Drink) tea can bring many health benefits (益处). Now tea is loved 6 millions of people from China to England, from India to Afghanistan—each culture with its own tradition.
Tea was discovered by accident. 7 the ruler Shen Nong was boiling water over an open fire, some 8 (leaf) from a tea plant fell into the water. Shen Nong then fell in love with the drink that followed, and that is how tea became 9 common drink in Chinese culture.
Help 10 (you) to some tea when you are free. Maybe, you will like it, too.
1. named 2. tries 3. importance
4. second 5. Drinking 6. by
7. When 8. leaves 9. a
10. yourself/yourselves

答案： 1. named 2. tries 3. importance 4. second 5. Drinking 6. by 7. When 8. leaves 9. a 10. yourself/yourselves