《2025年海淀单元测试AB卷八年级英语下册外研版》

Passage 7
In the past nine years, Li Jin, who was born in Guangxi but raised in Sanya, has made great efforts to protect the waters of Sanya in Hainan. He is now spreading the knowledge of environmental protection through new media platforms(媒体平台).
Around 2014, he began doing volunteer work to clear rubbish from the beaches and officially registered(注册) as a volunteer in May 2017. Li Jin immediately took the lead in a clean - up activity in the Sanya River.
In April 2021, he used his own money to set up a volunteer service centre which has 1,170 registered members who take part in activities without asking for payment. So far, he has spent about 3,800 hours on volunteer activities in over 550 events. More than 2,300 people have joined in with his encouragement. They've drawn the attention of both the adults and the children to the importance of protecting the oceans and beaches. Since it was set up, his centre has organised 51 beach - cleaning activities that have seen about 1,800 people join in. In 2021, because of Li's growing influence in environmental protection circles, the city government invited him to make a number of short videos, in which he used simple words to explain how to protect the environment. Several of the videos have been watched millions of times.
“My volunteer work would be meaningless if I got paid. But the work itself is of great value. So I will continue doing the environmental protection work,” he said.
1. What is Li Jin trying hard to protect?
A. The beaches in Guangxi.
B. The waters of Sanya.
C. The wildlife on the Sanya River.
D. The cities in Hainan.
2. How many registered members were there when he set up the volunteer service centre?
A. 550. B. 1,170. C. 1,800. D. 2,300.
3. What can we know from Paragraph 3?
A. Millions of people join in Li Jin's activities.
B. Members in Li Jin's service centre get paid.
C. Most activities are organised for children.
D. Some videos Li Jin made are a success.
4. Which of the following best describes Li Jin?
A. Quiet and kind - hearted.
B. Patient and humorous.
C. Strong - minded and selfless.
D. Honest and easy - going.
5. What is the text mainly about?
A. A hero praised for volunteer work.
B. The leader in a clean - up activity.
C. The meaning of protecting water.
D. A volunteer service centre.

答案： 1—5 BBDCA

Passage 8
What time is it? The answer you give can be different, because you are in different earth's time zones(时区). But how could you tell the time if you aren't anywhere on the earth?
Scientists are now thinking of creating a lunar(月球的) time zone. They believe it would be better for astronauts to communicate by using Moon Time, as they travel to, from, and across the moon. At the moment, astronauts are using time zones of their own countries. But there could be safety problems caused by the differences in time - telling.
▲ Gravity(引力) influences how quickly or slowly time passes. Since gravity is weaker on the moon, clocks run a bit faster there. After 24 hours, a lunar clock would be 56 microseconds ahead of a clock on the earth. Another point to consider is that a full day on the earth is about 24 hours between two sunsets. While on the moon, it is nearly 709 hours, about 29.5 earth days. This means that lunar nights can be around two weeks long, with only the earth and the stars in the sky. With all this to think about, scientists need to decide whether it would be better to follow a time zone on the earth, or for the moon to have its own special zone, which would have much longer days.
Scientists must consider other problems too. For example, who should be responsible for keeping the time zone going? And how can it be made practical for astronauts to use?
There are more countries planning moon trips in the future. The idea of creating a time zone on the moon would make these easier. And if a lunar time zone is set up, scientists could create time zones for other planets like Mars.
1. Scientists think that a lunar time zone can ________.
A. keep the moon clean
B. keep astronauts healthy
C. make the moon trips safer
D. make space travel faster
2. Which of the following can be put in the blank ▲ in Paragraph 3?
A. Setting up a lunar time zone is not easy.
B. Setting up a special time zone is important.
C. Scientists are holding different opinions.
D. Scientists need to do a lot of experiments.
3. If the moon has its own special time zone, a full day of it can be about ________ on the earth.
A. 56 microseconds B. 24 hours
C. two weeks D. 29.5 days
4. What is the writer's purpose in writing the passage?
A. To give information about space travel.
B. To introduce the idea of Moon Time.
C. To describe an experience of time travel.
D. To share news about landing on Mars.

答案： 1—4 CADB