Unit 4 Topic 2 I'm excited about the things that will be discovered in the future. Section B 练习

中小学教育资源及组卷应用平台 Unit 4 Topic 2 Section B 同步练习 1. 单项选择。 ( )1.Students _____ their hair when they are at school. A.don’t allow to dye(给……染色) B.are not allowed to dye C.aren’t allowed to dying D.aren’t allowed dying ( )2.When was _____ umbrella _____? A./; invented B.a; discovered C.an; discovered D.the; invented ( )3.The cleaners make a great contribution to _____ the city clean. A.kept B.keeping C.keep D.be kept ( )4.—Did you go to Jim’s birthday party? —No, I _____. A.am not invited B.wasn’t invited C.haven’t invited D.didn’t invited ( )5.The dream of flying up into space has _____. A.come true B.come into being C.come back D.come in 二. 情景交际。 A: What a nice camera! 1 B: It was invented by Joseph Nicephore Niepee. A.What did it look like? B.Who invented it? C.It looks like a recorder. D.Where was it made? E.When was it invented? F.What is it used for? G.What is it made of ? A: Oh, I see. 2 B: In 1827. A: What’s this in English? 3 B: It’s called an English Learning Machine. A: 4 B: It may be made of steel. A: 5 B: It is used for helping us to improve our English. 三．阅读理解。 Cars will run on solar power(太阳能) or electricity and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down by itself. Because there won’t be any spare land, new cities will have to be built in the sea. Some cities on water will have two levels. People will live on the upper level; the lower level will be used for traffic, shops and factories. Biotechnology(生物技术) will make food better and healthier. Plants that are not affected by insects or illnesses will be developed. The taste of fruit and vegetables will be better and food will be kept longer. New technology will be used to make TVs that are only 5cm thick. They will have pictures that are as clear as photos. Electrical appliances(电器) will be quieter and will be controlled by computer, they will also use 50% less power. Using products of genetic engineering(基因工程产品), many new ways to cure(治愈) illnesses will be successful. Cures will be found for the flu and the common cold. However, some new illnesses will appear. 根据短文内容，判断正(T)误(F)。 ( )1.Cars using solar power or electricity will cause fewer accidents and less pollution. ( )2.People will be able to live in the new cities in the sea. ( )3.Biotechnology will help divide food into two groups: better food and healthier food. ( )4.Electrical appliances will save 50% of power because they are controlled by computer. ( )5.Genetic engineering can help doctors to cure illnesses. 同步练习答案 1. 1.B 2.D 3.B 4.B 5.A 二. 1.B 2.E 3.C 4.G 5.F 三. 1.T 2.T 3.F 4.F 5. T 21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 （共 2 页） HYPERLINK "http://21世纪教育网(www.21cnjy.com) " 21世纪教育网(www.21cnjy.com)