四、根据短文内容及首字母提示，填写所缺单词，使短文意思完整，每空限一词。
The Earth is our mother. Without the Earth, there would be no l 1 . It p 2 us with enough water, food, minerals and so on. So please p 3 it—our mother. We can do it f 4 little things such as saving water and planting trees. Let's do it right now, for o 5 , also for our younger generation.
Nowadays, the p 6 of the Earth is more and more serious and becoming one of the m 7 serious problems of the world.
It is our duty to save our Earth. How can we protect our Earth from being polluted? F 8 , do not throw garbage around because it will pollute the e 9 . Secondly, do not let p 10 water get into the river because it will pollute the river and kill fish.
We just have one Earth. Please save it!
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.

1. life 2. provides 3. protect 4. from 5. ourselves 6. pollution 7. most 8. Firstly 9. environment 10. polluted

五、任务型阅读。
The world's longest-ever study to study happiness was completed by scientists at Harvard Medical School in 2023. After so many years, the research found that happy people all shared one common quality: They had good relationships.
In 1938, the Harvard Study of Adult Development started a research project to find out what made people grow healthy. The study firstly focused on 724 people but later expanded(扩大) to include more than three generations(代) of their children. In all, more than 2,000 people were studied. The results were published in a book, The Good Life: Lessons from the World's Longest Scientific Study of Happiness.
The researchers found that having strong, positive relationships made people feel the happiest. The relationships could be with a partner, another family member, or a friend. "The reason relationships may be the key to happiness is that they help people manage stress," said Dr Robert Waldinger, the study director. In addition, the study concluded that a challenging life was often a happy one because people got satisfaction from doing hard tasks such as raising children or opening a business. It was also OK not to feel happy all the time, the study found.
A Researchers followed the study participants throughout their lives, starting when they were teenagers. B They collected information about their physical and mental health, including exercise levels and top worries. The scientists met with the participants. C Study participants also rated(评估) their lives in surveys and were given physical examinations that included brain scans and blood tests. D
Dr Waldinger said that some common beliefs about happiness didn't hold up when they were studied. For example, people with plenty of money weren't necessarily happier. "You can't 5 ," he said.
回答下面5个问题，每题答案不超过5个词。
1. What does the underlined word "They" refer to in Paragraph 1?

2. How long did the study last?

3. Relationships are probably the key for us to keeping happy, aren't they?

4. In Paragraph 4, the sentence "And they spent time watching their actions and their living conditions." is missing. Where should we put it, A, B, C or D?

5. Please fill in the blank in the last paragraph.

1. Happy people.
2. For about 85 years.
3. Yes, they are.
4. C.
5. buy happiness