分不多,請灌水的朋友不要進!英語閱讀最后一篇!
Air pollution can cause both airplane and auto accidents because it cuts down visibility.There are other possible health dangers from air pollution that we do not know much about.For example,scientists are trying to find out whether chemicals that reach us from the air may cause changes in our cells.These changes might cause babies to be born with serious defects.Scientists are trying to learn how all the many chemicals we are apt to take into our bodies from air,water,food and even medicines act together to affect our health and the way our bodies work.That is another reason why it is so important to begin to control pollution now instead of waiting until we learn all the answers.
Air pollution costs us a lot of money.It dirties and corrodes our buildings.It damages farm crops and forests.It has a destructive effect on our works of art.The cost of all this damage in the United States is thought to be more than $16 billion every year.This is far more than the cost of controlling air pollution would be.
31.Air pollution can bring airplane and car accidents because ________.
A.it makes pilots and drivers ill B.it dirties airplanes and cars
C.pilots and drivers cannot bear the pollution
D.it prevents pilots and drivers from seeing things clearly
32.According to the reading,scientists are still working to find out a connection between the air pollution and ______.
A.car accidents B.birth rate C.babies’ health D.lung diseases
33.According to the writer,the effects of pollution on the human body _______.
A.have been proved by scientists B.have not yet been determined by scientists
C.can be controlled completely D.None of the above
34.It can be inferred from the passage that the author __________.
A.wants scientists to find all the answers to the questions about air pollution
B.doesn’t know where to get enough money to control the pollution
C.doesn’t think it most important to find answers for all these questions about air pollution
D.thinks it more important to control damages than air pollution
35.According to the author,as air pollution is getting more and more serious,__________.
A.the government will be forced to fight against pollution
B.people all over the world will become poorer and poorer
C.more and more money in controlling air pollution will be wasted
D.the world will have more and more babies with defects
47.The football game comes to you _______ from New York.
A.lively B.alive C.live D.living
48.It is useful to be able to predict the extent ____ a price change will affect supply and demand.
A.in that B.with which C.to which D.for that
49.I’ve never been to Beijing,but it’s the place _______.A.where I'd like to visit B.in which I'd like to visit C.I most want to visit D.that I want to visit it most
50.A peculiarly pointed chin is his most memorable facial ________.
A.mark B.feature C.trace D.appearance
51.When making modern cameras,people began to _______ metal with plastics.
A.change B.exchange C.take place D.replace
52.Some plants are very ________ to light; they prefer the shade.A.sensible B.flexibleC.objectiveD.sensitive
55.The president promised to keep all the board members ____ of how the negotiations were going on.
A.inform B.informing C.be informed D.informed