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1、Unit 3 Language in use 一、语法选择. (2022 广东东莞外国语学校一模)Researchers at an American university arc working to create special chewing gum (。春4* ) to help reduce the spread of the COVID- 19.Experts agree that vaccination(接种疫 e usedIooking back to when I was younger in the 1980s, I can remember dreaming of Iwo
2、 inventions ihat I thought would change my world bul were pnibably not likely lo happen in my lifetime. One was a tiny I that I could carry around in my ptxrket and film momenls whenever I had (he opportunity. The other was something I could use to see and speak to people miles away.It is unbelievab
3、le that during my adult life these two 2 have become a reality. And noe to our rescue, h s up lo use to be careful about the time we spend online and remember that it s good lo talk with those sitting nearby. We can still fed 1。 to have such a powerful piece of technology available when wc need三、阅读理
4、解.it.()1. A. adio B. DVD-ROMC. TV setD. video camera()2. A. jobs B. dreams C. children D. teachers()3- A. especiallyB. hardlyC. immediatelyD. accurately( 4. A. listB. legendC. sale D. memory)5. A. smallest B. biggest C. largestD. easiest 9. A. advising B. warning C. expecting D. allowing()10. A. ang
5、ry B. amazed C. boredD. interestedHave you ever seen a solar panel (太阳能电池才氏 in your ncighbourhixx!? Solar panels take energy from (he sun and turn it into dcctricily. Over the past ten years, the price of solar panels has gone down greatly. In many parts of (he world, solar energy is now the cheapes
6、t form of electricity. More and more people have started using solar energy to power their homes.However, solar panels also have (heir problems. They stop working at night and on rainy days. Is it possible to make them produce clcclricity all of the time?Scientists al Suzhou Universily, China* have
7、invenled a new solar panel now. It can produce electricily not only from solar energy but also from falling rain. When a raindrop falls on the solar panel and then rolls (滚动)down, it creates friction (摩擦力)on the surface of the panel. which can then be turned into electricity.Sun Baoquan is one of th
8、e inventors. Our new invention can produce electricity in any weather during the day, “ he says. It can even provide electricity at night if there is rain. ”The solar panel. however, does not make much electricily from falling rain. So Sun Baoquan is still working hard to improve it. Ilie scientist
9、also wants to make more flexible solar panels, which are as soft as clothing. They will be much lighter and provide more electricity.The field of solar energy is developing fast. Scientists around the world have been improving solar panels. Sonw have been working on ways to join solar panels and win
10、d power together. Some have been tr)fing(o use sunlight to produce liquid and gas fuels ,()1. Common solar panels are not gcxxl enough because.A. the price of them is rising B. they can t work all of the timeC. they can hardly power people s homes D. they can l take energy from the sun( 2. The new s
11、olar panel made by scientists at Suzhou University can.A. tum water into electricitycreate more electricity al nightB. produce electricity from falling rain onlyprovide electricity even in rainy conditions()3. The underlined word flexible means in Paragraph 5.A. soft B. smooth C. hard D. light( 4. W
12、e can learn from the last paragraph that.A there is no room for developing solar energysolar |anels don t need to be improved any moreB. there is no end to the research in ihe field of solar energysolar energy has completely replaced other kinds of energy()5. The passage is mainly aboutA. the histor
13、y of (he solar panels B. (he importance of solar energyC- the introduction of a new solar panel D. the advantages of using solar panels 四、短文填空。(2021 浙江温州二中一模)LiuJichcn, a student from Tsinghua University, has developed a WcChat mini - program called uClear PlateM . 1. a meal， users can open the mini
14、 -program and take a photo of their 2. plates. Once the image is checked by the AL users can collect points and use them to buy gifts or meals for children in poor 3 .Technology is a good way to 4. the problem of food waste. Liu thought. He organised a team of twenty members io work on the project.
15、In order io improve the mini -program, the team 5. half a year collecting over 100. 000 photos in school dining halls and restaurants. In 2018. the mini -program was put into use. Soon, it became one of 6. most popular mini -programs in universities across China.Meanwhile. Liu and his team* together
16、 7. other organizations* slarlcd (he MClear Your Plale M campaign in November in the third year of his university. Almost 1. 6 million college students were atlruclcd and food waste was 8. by 862 tons. *Through the campaign we hope lo encourage 9. to take action against food waste he said.Thanks to his great efforts, Liu stood out 10. nu)rc than 7, 600 people around the world and was rewarded one of (he Young Leaders for the SDGs (可持续开展目标)by the UN.