Unit3 Environmental protection课时作业1-6 2020-2021学年人教版高中英语必修第三册

选修3 Unit3 课时作业(1) 班级______________姓名_____________ 一、单句填空。 1.We should 　　　(抓住) the precious chance, otherwise we would regret it sooner or later.   2.Our country has always been pursuing a 　　　(政策)of peace to deal with international affairs.   3.As an English teacher, you should master the current 　　　(趋势) in language teaching.  4.The news of the high-speed rail link in this area is soon 　　　(播送)all over the countryside.  5.Now the low 　　　(碳) lifestyle is advocated, which is an important measure to keep sustainable development.  6.The reporter has made a 　　　(详尽的)report on how the lunar soil was brought to the earth.  二、阅读训练。 Each year there is an increasing number of cars on roads and streets as millions of new cars and trucks are produced. One out of every six Americans works at putting together the parts of cars, driving trucks, building roads or filling cars and trucks with gas. Americans won’t live without cars! Most Americans would find it hard to think what life would look like without cars. However, some have realized the serious problems of the air pollution that is caused by the car. The polluted air becomes poisonous and dangerous to health. One way to get rid of the polluted air is to build a car that does not pollute. That’s what several of the large car factories have been trying to do. But to build a clean car is easier said than done. Progress in this field has been slow. Another way is to take the place of the car engine by something else. Inventors are now working on steam cars as well as electric cars. Many makers believe that it will take years to develop a practical model that pleases man. To prevent the world from being polluted by cars, we’ll have to make some changes in the way many of us live. Americans, for example, are encouraged to travel and go to work by bicycle. Bicycling is thought to help keep the air clean. But this change does not come easily. A large number of workers may find themselves without jobs i