《2025年经纶学典5星学霸七年级英语上册译林版》

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体裁:说明文 主题:航天与航空 难度:★★★★★ 建议用时:8 min 正确率:/5
新素材·太空养鱼 Fish babies in space? What surprising news! In a space study on zebrafish, Chinese scientists have set a new record. They successfully got the four zebrafish to live and grow healthily in a closed water world.
① The zebrafish went to China's space station on the Shenzhou ⅩⅧ spaceship on April 25. Since then, they have been living in a closed fish tank(缸) with some plants. The fish grew up and had babies in 43 days. It means that the fish finished a whole life stage, from growth to development and giving babies.
② In their special closed environment(环境), the plants made air for the fish and the fish's waste gave the plants food. The scientists gave the fish food through a special needle.
③ Such a closed environment is important for future studies in space. It means that plants and animals can live in space more easily.
④ For example, they often swam on their back in space. The low gravity(重力) in space is a big reason. However, on the Earth, gravity pulls everything to Earth's centre, and animals can find their way easily. Gravity also makes their bodies work harder and become stronger.
It isn't the first time fish have been sent to space. Zebrafish were earlier sent to space station in 1976. Why do scientists choose zebrafish? Humans(人类) and zebrafish share 70 percent of the same genes. So the new finding will help scientists better understand human health and human diseases.
1. What do we know about the space study?
A. It took place in a closed water world.
B. The zebrafish gave birth to four babies at last.
C. It took zebrafish less than one month to grow up.
D. Scientists from different countries did it together.
2. 新趋势·图示理解 Which picture should be in the circle to show the environment in the fish tank?
3. What's the possible result(结果) of the low gravity in space?
A. Human bodies get stronger.
B. Animals can easily find their way.
C. The zebrafish swim on their back.
D. The zebrafish swim quickly as usual.
4. 新趋势·补全文章 Where can we put the sentence “The scientists also found that the zebrafish acted differently in space.”?
A. ① B. ② C. ③ D. ④
5. What is the last paragraph mainly about?
A. More studies on zebrafish.
B. The importance of the study.
C. The ways of the space study.
D. The differences between zebrafish and humans.

答案： 1. A 细节理解题。根据第二段“Since then，they have been living in a closed fish tank with some plants.”可知这项太空研究发生在封闭的环境中。故选 A。
2. B 图示理解题。根据第三段“In their special closed environment，the plants made air for the fish and the fish's waste gave the plants food.”可知在特殊的封闭环境中，植物为鱼提供空气，鱼的排泄物为植物提供食物，由此可知鱼产生排泄物，植物消耗排泄物。故选 B。
3. C 细节理解题。根据第五段“For example，they often swam on their back in space. The low gravity in space is a big reason.”可知太空的低重力的结果是斑马鱼腹背颠倒游泳。故选 C。
4. D 补全文章题。根据第五段“For example，they often swam on their back in space. The low gravity in space is a big reason.”可知太空的低重力导致斑马鱼腹背颠倒游泳，此处用斑马鱼游泳方式的例子介绍斑马鱼在太空的异常行为；所填句“科学家们还发现，斑马鱼在太空中的行为不同。”能承接第五段。故选 D。
5. B 段落大意题。根据最后一段“Humans and zebrafish share 70 percent of the same genes. So the new finding will help scientists better understand human health and human diseases.”可知本段主要介绍了研究的重要性。故选 B。