Question

阅读理解 　　In the cities,cars,buses and airplanes,as well as factories and buildings may cause air pollution.In the country,smoke from wood and crop fire may cause air pollution. 　　These days,lots of people are worried about air pollution and whether it will do harm to our health.Most of the time,the pollution levels(水平)are low and if you are in good health,then it is unlikely to have any serious short term effect(影响)on you. 　　Think back to the days of 50 years ago, factories used large amounts of coal(煤),and we could see snoke everywhere .The air then was far more dangerous than it is today. 　　However,that doesn't mean we shouldn't care about the air around us.People who already have health problems and very young or very old people should be more careful. (1) Which of the following can cause air pollution in the cities? 　　A.Trees.　　B.Crops.　　C.Wood.　　D.Cars [　　] (2) If the air pollution level is low,it may not have serious short term effects on ____ people. 　　A.kind hearted　　B.cold blooded 　　C.healthy　　D.unhealthy [　　] (3) 50 years ago,the air was ____ than now. 　　A.better　　B.warmer　　C.worse　　D.cleaner [　　] (4) Which of the following is TRUE? 　　A.All kinds of gases can pollute the air. 　　B.The air in the country is always good. 　　C.Air pollution will not affect healthy people. 　　D.Air pollution affects old people more easily. [　　] (5) What does the passage mainly talk about? 　　A.Air pollution.　　B.Water pollution. 　　C.Sound pollution. D.Light pollution. [　　]

Answer 1

答案：1．D ;2．C ;3．C ;4．D ;5．A ;