1、语法填空练习一 With the 1______ (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 2______ air pollution. Air pollution is caused by the following 3_____: about half of the problem is caused by vehicles. There are mor
2、e and more cars, buses on the roads, and they give off 4______ (poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health 5____ to others. 6_____these, about 10%of air pollution is caused by other reasons.We should take so
3、me measures to fight 7______ pollution. New fuel can be used to take 8______place of gas. We can plant more trees. If everybody realizes the 9_______ (important) of environment and does something to stop pollution, the problem will 10________ (solve). 语法填空练习二 We often think of future. We often wo
4、nder 1 the world will be like in a hundred years’ time. Think of space. Perhaps a permanent station on 2 moon will 3 (set) up. Perhaps people will be able to visit the moon as 4 . Cheap rockets for space travel will have been developed, 5 (permit) long journeys t
5、hrough the solar system. When that time comes, people will be taking holidays in space and visiting 6 planets. Great progress will have been made 7 medicine, too. Pollution will have been controlled in a hundred years’ time. 8 the world will have been developed—even Antarctica.
6、 We will have used up most of the earth’s land to build our cities, 9 floating cities will have been built. The Japanese have already plans of this kind. And there will be cities 10 the sea. 语法填空练习三 In the United States, there were 222 people 1 (report) to be billiona
7、ires in 2003. The 2 of these is Bill Gates, worth at least $41 billion, who made his money 3 starting the company Microsoft. Mr Gates was only 21 years old 4 he first helped to set up the compan
