Unit 7 单元练习题

八年级上册Unit7单元测试题一、完形填空阅读短文，从每题A、B、C、D四个选项中，选出一个能填入文章中相应空白处的最佳答案。

(15分)Destinee Whitaker was in fourth grade when she learned that millions of people around the world are in need of water.“It was a problem that just 1 me, that not everyone had what I had, that not everyone lived the 2 that I live,” said Whitaker, a young girl from West Philadelphia Pennsylvania, US. “ 3 is a necessity(必需品).”When Whitaker entered high school, she 4 she had to do something. She wanted to 5 money to buy water purification systems(净化系统) for people in need. Whitaker knew the systems would have to be 6to carry and able to work without electricity.7 the help of her classmates, Whitaker organized bake sales, dress-down(便装) days and games.They raised $800(5,653.6yuan) a large amount for a school 8 70percent of students families are not rich.9 Whitaker soon found that finding an organization that could deliver(递送) the water purification systems was a bigger 10 . She went to mission groups and others about their possible 11 toprojects in Africa, Central and South America 12 could help.Then Whitaker connected with Joseph Sackor. He runs the Liberia Medical Mission, an organization that13 medical services for Liberians (利比里亚人)who need health services, Sackor accepted theschool’s money and agreed to deliver the systems to people who need 14 .“Some children in Liberia can't 15 go to school because their parents cannot afford to buy them bottled water, “ Sackor said. “The money is huge.”1.A.pleased B.frightened C.surprised D.satisfied2.A.way B.world C.dream D.difficulty3.A.Air B.Water C.Earth D.Food4.A.expected B.doubted C.wondered D.felt5.A.donate B.raise C.prepare D.collect6.A.easy B.hard C.impossible D.important7.A.By B.With C.Beyond D.Over8.A.which B.what C.who D.where9.A.So B.Though C.But D.Since10.A.problem B.chance C.task D.deal11.A.inventions B.connections C.protection D.introduction12.A.Everybody B.Nobody C.Somebody D.Anybody13.A.bought B.gave C.provided D.presented14.A.them B.it C.her D.him15.A.ever B.never C.yet D.even二、补全对话阅读对话，从每个A、B、C、D四个选项中，选出一个最佳答案完成对话。

(5分)A: I really enjoyed Mrs. Wang's class this year.B: 16 Her class is interesting.A: And she is kind to all of us. 17B: Yes, I think she is a good teacher although she is strict with us.A: I agree. Well, we are leaving school next week. Shall we get her a gift?B: Sure! Mmm (18)A: No, too cheap.B: Can we get her a watch? I think she may need it.A: No, 19B: I think we can get her a scarf. A scarf may be a good gift for her.A: No, a scarf is too personal.B: Well, how about a photo album with our photos?A: A photo album with our photos? Yes, this gift is very special. 2016. A. Me, too. B. I don't like her. C. I don't think so. D. She is a teacher, too.17. A. No, I can't. B. Do you think so? C. Sure. D. It's interesting.18. A. How about a card? B. Is it a card? C. Is a card cheap? D. Can she buy a card?19. A. a watch isn't special. B. a watch is nice. C. the watch doesn't belong to her. D. it isn't a watch.20. A. I'm sure she'll like it. B. She doesn't like it. C. We can't find it. D. I don't like it.三、阅读理解阅读下列短文，从每题A、B、C、D 四个选项中，选出一个能回答所提问题或完成所给句子的最佳答案。

(40分)AHello! We’re in 2042 now. Let’s share our beautiful life together!I had a serious illness at the age of 7. From then on, I expected to be a doctor. Now I work in a hospitalas a doctor. There are modern medical instruments and services. I can treat patients even when they’re faraway from me. This is because the Internet is faster now.Through years of studying hard, I'm teaching Chinese in a middle school. Some of my students come from other countries. Since they like Chinese history and culture, they carefully listen to me explainChinese poems and novels. They spread Chinese history and culture around the world.China is much greener now because it has worked on protecting the environment. New energy is used without polluting Earth. I'm doing something common for our city. I keep our streets clean and tidy everyday to make people live comfortably. I take pride in my job. Any job is a good job.When I was young, I dreamed of being an astronaut(宇航员)and flying into the space. Nowadays, my dream has come true. Traveling to the moon has got popular. People between the ages of 18 to 60 are ableto travel to the moon. I'm going to travel to the Mars(火星)soon. I’m so excited!A. on the InternetB. on the radioC. on the moonD. on the plane22. Wen Hua’s foreign students are interested in________, so they enjoy her classes.A. becoming a teacherB. English poems and novelsC. flying into the spaceD. Chinese history andculture23. Gan Jing may be________ according to what he said.A. a teacherB. a doctorC. a cleanerD. an astronaut24. Lan Tian is excited because he________.A. works as a doctorB. will travel to the moonC. is proud of his jobD. is going to the Mars soon25. We can infer that the four students are imagining their________.A. hobbies and habitsB. life in the futureC. living environmentD. ways of travelingBIt is often said, “You can't live only on air.” But now the Chinese scientists can tell you: Maybe you can.Recently, some Chinese scientists have developed a new technique (技术). They turned CO2, one of the main greenhouse gases, into starch (淀粉).Starch is the main part of flour (面粉), rice and com that we eat every day. Usually, it's created by plants withCO2, water and sunlight. According to the team's director Ma Yanhe, it takes the plants nearly 60 steps to produce starch. But now, the team, after six years of hard work, has found a simpler way to do this, with only 11 steps.“Our study shows that creating something like starch is possible in a lab, and this technology may be helpful in many areas.” said Ma.The scientists first turned CO2 and hydrogen (氢气) into methanol (甲醇). Then they pieced (分解) these methanol molecules (分子) into bigger and more complex (复杂的) molecules. Finally the starch was produced.This method makes it possible to produce food in factories, replacing traditional farming. This will not only help make plenty of food, but also save water and land. It may also help recycle CO2 to deal with climate (气候) change, according to China Daily.The study can be helpful in space, too. Astronauts may no longer need to worry about their food as they travel in space. They may simply turn the CO? they breathe out into the food they eat!26. With a new technique, the Chinese scientists could turn ________ into starch.A. CO2B. airC. waterD. sunlight27. Plants can create _________ with CO2, water and sunlight.A. methanolB. hydrogenC. starchD. greenhouse gas28. According to the last two paragraphs, the new method may not help ________.A. produce food in factoriesB. recycle CO2 to deal with climate changeC. save water and landD. send astronauts into space29. According to the passage, which of the following is wrong?A. Producing starch in the lab needs fewer steps now.B. The new technology may be helpful in many areas.C. The method will help make plenty of food.D. The study will be of no help to astronauts.30. The passage may be from a _________.A. guidebookB. magazineC. poemD. novelCLife in Outer SpaceChinese taikonauts Zhai Zhigang, Wang Yaping and Ye Guangfu carried out theShenzhou-13 spaceflight mission (任务) that started on Oct. 15, 2021. This mission lasts 6months, which was also a national record. Zhai is the commander (指令长) who performedChina’s first spacewalk in the Shenzhou-7 mission in 2008. Wang, who was in the Shenzhou-10mission in 2013, is the first Chinese woman astronaut to visit China’s space station. Ye is a newcomer to space.The trio had carried out two spacewalks and completed more than 20 scientific tasks. Besides their tasks, they had also given two live lectures from the space station, showing the students their living and working areas at the Tianhe core module and several scientific experiments under zero-gravity conditions and answering real-time questions from students.The trio also became the first Chinese to spend the nation’s most important festival — the Chinese Lunar New Year — in outer space.They returned to Earth on April 16, 2022 and made Shenzhou-13 mission a great success.31. How long was the mission that was carried out by the taikonauts?A. 13 months.B. 10 months.C. 7 months.D. 6 months.32. What does the underlined “ trio ” probably mean?A. A group of two.B. A group of three.C. A group of four.D. A group of five.33. Which paragraph tells us what the taikonauts had mainly done in this mission in space?A. Paragraph 1.B. Paragraph 2.C. Paragraph 3.D. Paragraph 4.34. What would be the most suitable to replace ________ in the picture?A. Commander Zhai held a pair of couplets and wished the Chinese people good health.B. Wang, with a red balloon in hand, wished children across the country healthy growth.C. Ye held a sticker with the Chinese character “ fu, ” and wished the Chinese people a happy Lunar New Year.D. The taikonauts have put up red lanterns, Chinese knots and paper-cut craft to celebrate the Chinese New Year.35. Which of the following is NOT true?A. All the three taikonauts had been to the space before.B. Zhai Zhigang is a commander.C. The trio gave two live lectures from the space station.D. They returned to earth in mid-April.DOn Dec.9,three Chinese astronauts gave a science lecture 400 kilometers above Earth!Zhai Zhigang,WangYaping and Ye Guangfu who are working aboard the Tiangong space station，showed our students a glimpse of their life there. They also did some fun science experiments.Let's take a look at some of them.Use it or lose itThe human body grows with the pull of Earth's gravity (重力).But in space, our bones and muscles (肌肉) don't need to support our body's weight. This will cause bone and muscle loss. It's reported that astronauts can lose up to 20% of their muscles after just a couple of weeks. That is dangerous for astronauts because they will be too weak to work.Astronauts have different ways to prevent this.During the lecture,Zhai introduced a special uniform Ye was wearing. It's called a "penguin suit". There are many elastic bands(弹力带)inside the suit.Wearing it,astronauts use their muscles to stretch(拉伸) the bands. This keeps their muscles strong. Wang also showed students how she walked on a treadmill (跑步机) and rode a bicycle. Astronauts exercise with these tools every day to prevent muscle loss.Space water is differentWater in space acts differently from water on Earth in other ways. For example,water will not flow(流动) downward if you try to pour it into a cup. That's why astronauts usually drink water through straws(吸管)in sealed(密封的)bags. If astronauts cry,the tears will stay on their eyeballs instead of falling down. They have to wipe(擦拭)them away！During another experiment,Wang made a water film (膜). Then she added more water drops onto the film to make it a water ball. This can never happen on Earth.36.The astronauts gave a lecture 400 kilometers above Earth on Dec.9.A.scienceB.ChineseC.historyD.geography37.The astronauts might become weak in the space because.A.their bodies will stop growingB.they have to work for long hoursC.they might lose some of their musclesD.their muscles have to support more weight38.Zhai showed to the students during the lecture.A.Earth's gravityB.a "penguin suit"C.a treadmillD.a bicycle39.Which is NOT TRUE about water in space?A.If astronauts cry,the tears will stay on their eyeballs.B.If astronauts pour the water into a cup,it will flow downward.C.If astronauts add more water drops onto the film,it will become a water ball.D.The astronauts usually drink water through straws in sealed bags.40.The word "" can best describe the lecture in space.A.BoringB.CarelessC.DangerousD.Eye-opening四、语法填空阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。