1、Unit 8 Green Living Topic Talk & Lesson 1 Roots and Shoots2021-2022学年高一英语北师大版（2019）必修第三册随堂检测一、填空1.Leave him _ peace!2.What has left him _ for so long?3.Did you have _ bother finding the house?4.What _ bother! Weve missed the bus.5.What are you shooting your gun _?6.Have you been fighting _ your brot
2、her again?7.I visited a number of research i_ in Asia.8.Even if you plant the seed upside down, the r_ will still grow down.9.Theres no simple s_ to the problem of pollution.10.We need to call for a g_ ban on whaling.二、七选五 The increasing environmental problems and need for eco-friendly products and
3、services are creating a new job section of green-collar jobs. _ It is expected that by 2025 about 25% of the jobs in developed countries will be green-collar jobs. Doesnt the data look promising for the future?_ And jobs will pop up at every income level, from environmental managers to gardeners. Fo
4、r example, many countries including the United States have understood that fossil fuels have negative effect on the environment which can later become a serious danger to mankind._ The increasing demand for newer resources has created the need for experts and researchers who can find better ways to
5、deal with the ongoing needs. In addition, in order to meet the increasing demand for environment-friendly equipment, both green product designers and trained workers are needed. Management of environmental organizations also demands a large number of environmental managers._ The Internet is undoubte
6、dly the best way to find information on almost any matter. Nowadays different kinds of jobs are being posted online. Search through a couple of job websites to look for a bright future in energy conversion and management and the recycling of waste. Check regularly and find the right work for yoursel
7、f. _A.People who read newspapers can also find different kinds of green-collar jobs.B.People who take green careers will be well paid.C.Where can you find green-collar jobs?D.Green-collar jobs have become a bright career chance for all.E.Many countries have realized the importance of energy-saving p
8、roducts and services and the need for them.F.Therefore, possibilities are being explored to find alternatives to meet demands in a better way.G.Forget the blue-collar and white-collar categories.三、阅读理解 Do you know about bioplastic? It is a kind of plastic, but it is different. Normal plastic is made
9、 from chemical materials and takes a very long time to degrade. But bioplastic is quite friendly to the environment. It is made by using bacteria to process natural sources like vegetable oil, com or sugar, and can break down more easily. But there is also a problem with bioplastic, despite its adva
10、ntages concerning environmental protection. The food that bacteria eat is also what we humans eat, meaning that bacteria are competing against humans for the same resources. Recently, scientists have claimed that they have succeeded in finding a new way to produce bioplasticusing two kinds of bacter
11、ia and sunlight. One kind of bacteria is called synthetic cyanobacteria, which can use sunlight to produce sugar. The other kind is Halomonas boliviensis, which lives in the salty waters of Bolivia. It eats the sugar that the first bacteria produce and then produces polymers(聚合物), which are used to
12、create bioplastic. Interestingly, the way the bacteria store polymers is similar to the way humans store fats. There are a couple of advantages producing bioplastic with these two bacteria, one important advantage being the speed. It is 20 times faster than the normal way we produce bioplastic. More
13、over, such method can save a considerable amount of resources. Producing large amounts of bioplastic would commonly require large amounts of com and sugar to feed normal bacteria. It could mean occupation of farmland as well as food supplies. But these two special bacteria can do the same job using
14、nothing but sunlight. The saved land can then be used to grow more food for humans. And according to the scientists, this system doesnt need rich land or clean water at all, which is quite a bonus. The next challenge scientists face is that they want to put their lab research into real-world practic
15、e. By doing this, bioplastic made with these two bacteria can be widely produced in the future.1. What does the underlined word degrade in the first paragraph probably mean?A. To break down.B. To set up.C. To produce.D. To digest.2. The advantages of producing bioplastic with synthetic cyanobacteria
16、 and Halomonas boliviensis do NOT include _.A. fast productionB. saving landC. producing polymersD. saving water3. What can we infer from the passage?A. Bioplastic is very friendly to the environment.B. Bioplastic is made from grain.C. Bioplastic is not really a kind of plastic.D. Bioplastic is stil
17、l not widely used in daily life.4. What is the authors purpose in writing the passage?A. To encourage people to use bioplastic products in daily life.B. To question the effect of bioplastic on environmental protection.C. To propose a new method to widely produce bioplastic items.D. To introduce a ne
18、w more eco-friendly way of making bioplastic.答案以及解析一、填空1.答案：in2.答案：away3.答案：much4.答案：a5.答案：at6.答案：with7.答案：institutes8.答案：roots9.答案：solution10.答案：global二、七选五答案：- EDFCA解析：根据此空前一句中的关键词environmental problems和eco-friendly products可知应选E。本空位于段首，是本段的主题句，根据后文内容And jobs will pop up at every income level及后文中的
19、举例可知，本段主要是说明绿领工作前景好。故选D。空前一句提出了化石燃料对环境有不好影响的问题，再根据空后一句中的关键词demand可知应选F。根据此空后两句可知网上有各种工作的信息，C选项可以与后文形成逻辑上的问答关系。故选C。根据此空前一句Check regularly and find the right work for yourself.可知，此处要讲如何找到一份工作，与A项中的can also find different kinds of green-collar jobs意思吻合，故选A。12.答案：1-4 ACDD解析：1.词义猜测题。根据第一段第三句和第五句可以推断出，degrade与break down同义，是“分解,降解”的意思，故选A。2.细节理解题。根据第四段第三句可知，C 项是关于用两种细菌生产塑料的方式，而非优点，故选C。3.推理判断题。根据最后一段可以推断出，这种生物塑料尚未大规模生产，因此在生活中也没有被广泛应用，故选D。4.写作意图题。通读全文可知，本文主要介绍一种生产生物塑料的新方法，故选D。
