2025-2026学年第一学期八年级英语自主练习
第Ⅰ卷(选择题)
一、完形填空 阅读下面短文，根据短文内容，在每小题所给的四个选项中，选出可以填入空白处的最佳选项。(本大题共20小题，每小题1.5分，共30分)
A
Scientists have been surprised and impressed with the long-distance (长距离的) travel of a cuckoo (杜鹃). It flew ____1____ southern Africa to Mongolia.
Onon is a common cuckoo. It’s one of the five cuckoos who were tagged (标记) last summer in Mongolia. ____2____ cuckoos originally (最初) came from Africa, until recently scientists weren’t sure if cuckoos from Mongolia flew to ____3____ for winter.
In June, 2019, scientists put some trackers (追踪仪) to five cuckoos. These satellite tags (卫星标签) allowed the scientists to ____4____ the movements of the birds on a map. Sure enough, Onon ____5____ the winter in southern Africa—in Zambia.
This spring, Onon returned to Mongolia, ____6____ scientists once again with its long-distance flying. In just a couple of months, Onon ____7____ more than 7,500 miles. It crossed 16 countries, flying at an average (平均的) ____8____ of 37 miles per hour.
Long migrations (迁徙) are common among sea birds, but cuckoos are land birds. “It was one of the ____9____ animal migrations which has been recorded for a land bird,” said Chris Hewson, one of the project’s lead scientists.
Long migrations like this are ____10____. The birds have to travel through strong winds and storms, make sure they find enough to eat, and avoid being eaten themselves.
1. A. with B. to C. by D. from
2. A. But B. Though C. If D. Because
3. A. Asia B. Europe C. Africa D. Arctic
4. A. walk B. follow C. take D. fly
5. A. spent B. used C. carried D. paid
6. A. exciting B. troubling C. interesting D. amazing
7. A. walked B. drank C. flew D. mentioned
8. A. speed B. kilometer C. distance D. length
9. A. cheapest B. longest C. nearest D. shortest
10. A. safe B. peaceful C. dangerous D. sad
B
Have you ever almost bumped into (撞上) someone when opening the car door without looking ____11____ to get out? Ju Wenxuan, an eighth-grade student from Shanghai Yangpu Bilingual School, invented a device (装置) that could help____12____ such accidents.
“I noticed that during busy hours when I was rushing to school and being seated in the back of a car it was ____13____ to see if it was safe to open the car door.” Ju said.
Ju found that there are devices that try to solve this ____14____. But they usually come with the newest smart cars and can’t be added to older cars.
Hoping to make a difference, Ju ____15____ a new device that can be used by any car. With remote-sensing image recognition (遥感图像识别) technology and a distance sensor, the device can find people or cars in the mirror ____16____ they get closer. It will sound an alarm when the door handle is pulled if any people or cars are close.
To make sure her invention would be affordable for most people Ju made a questionnaire survey and ____17____ that most people wanted a device priced between 100 and 300 yuan. So she worked hard to bring down the ____18____ of her device, such as using as few parts as possible without lowering quality.
“If my ____19____ can become a product used by more people, then it could reduce accidents. It could also be changed for other uses, such as keeping children _____20_____ by sending an alarm when a stranger moves toward them,” Ju added.
11. A. secretly B. politely C. carefully D. quickly
12. A. change B. increase C. improve D. reduce
13. A. hard B. normal C. wrong D. interesting
14. A. stress B. problem C. puzzle D. doubt
15. A. worked on B. turned on C. tried on D. lived on
16. A. though B. unless C. as D. until
