单选题According to the report, air pollution in big cities _____.Acan be more serious than Chernobyl nuclear disasterBcannot be compared with the disaster in ChernobylCcan release as damaging radiation as the Chernobyl disasterDcan be more serious than we used to think
单选题
According to the report, air pollution in big cities _____.
A
can be more serious than Chernobyl nuclear disaster
B
cannot be compared with the disaster in Chernobyl
C
can release as damaging radiation as the Chernobyl disaster
D
can be more serious than we used to think
参考解析
解析：
文章开始几句作者提到最近发布的一项报道给我们带来了关于空气污染的坏消息。报道指出空气污染对人体健康的损害程度可以和1986年乌克兰切尔诺贝利核辐射对身体的损害相匹敌。
文章开始几句作者提到最近发布的一项报道给我们带来了关于空气污染的坏消息。报道指出空气污染对人体健康的损害程度可以和1986年乌克兰切尔诺贝利核辐射对身体的损害相匹敌。
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People travel a lot with Heaven Air because they know they will get what they want. They want to go quickly and safely across the land, across the sea or right across the world, and they know Heaven Air will take them where they want to go whenever they want to go. Heaven Air flies all the newest and fastest planes to more towns and cities of the world than any other airlines. Do you want to go to Paris, Washington, Tokyo? Heaven Air will take you there, at all times of the day or night, right through the week. But Heaven Air flies not only to the Biggest cities, we also fly two or three times a week to towns and cities in the very center of Asia, Africa and South America. People fly with Heaven Air because they know they will leave on time and arrive on time. They know that they will receive the best food and watch the best films. Heaven Air is second to none.1). Heaven Air is the name of ().2). Travelling with Heaven Air is ().3). Heaven Air can take you to Paris ().4). Most flights of Heaven Air go to ().5). According to the advertisement, Heaven Air believes it is ().(1).A、a planeB、an airlineC、a travel serviceD、an advertising program(2).A、comfortable but expensiveB、cheap and pleasantC、exciting but tiringD、quick and safe(3).A、on weekends onlyB、just on weekdaysC、any time in a weekD、two or three times a week(4).A、big citiesB、small townsC、both big and small citiesD、the very center of Asia(5).A、the second biggest in the worldB、the second best in the worldC、the biggest in the worldD、the best in the world
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The air pollution exceeds most ________ levels by 10 times or more.A acceptableB accessibleC availableD applicable
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According to the article, which of the following statements is not true?A．Tightly sealed house may be harmful in another aspect.B．The house is unsealed to prevent the air from leaking.C．The air always leaks from cracks.D．New house is worse than old one in the aspect of indoor pollution.
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A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and WashingtonThe cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you rememberWhat’s the temperature when the report was written?A. About 60s and 70sB. Between 60s and 90sC. Below 60sD. About 80s and 90s
资料：We never thought we'd say this, but we'd welcome back some chilly weather.A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.According to the passage, what happened in early 2014?A.Temperatures in the U.S. fell into negative territory.B.People welcomed cool breezes in the U.S.C.Harsh winter struck in some cities of the U.S.D.Arctic air hit the U.S. for a few times.
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Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.AlikeBasCofDabout
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问答题Directions： Cars play an important role in modern society. But they are also responsible for a good part of air pollution in big cities. Write an essay on car and air pollution and base your composition on the outline below: （1）the serious problem of air pollution caused by cars; （2）your suggestions on how to deal with the problem. You should write about 160-200 words neatly on the ANSWER SHEET.
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单选题Air pollution, together with overpopulation, _____ many problems in big cities.Aare causingBis causingCare causedDis caused
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单选题Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.AlikeBasCofDabout
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单选题Air compressor cylinder un-loaders enable the compressor to （）.Avary their speed according to temperature and loadBstart and come up to speed before air compression beginsCchange speed according to overload demandsDreduce compressed air charge density
问答题Practice 8 A report published recently brings bad news about air pollution. It suggests that it could be as damaging to our health as exposure to the radiation from the 1986 Ukraine nuclear power plant disaster. The report was published by the UK’s Royal Commission on Environmental Pollution. But what can city people do to reduce exposure to air pollution? Quite a lot, it turns out. Avoid walking in busy streets. Choose side streets and parks instead. Pollution levels can fall a considerable amount just by moving a few meters away from the main pollution source—exhaust fumes (废气) . Also don’t walk behind smokers. Walk on the windward (顶风的) side of the street where exposure to pollutants (污染物) can be 50 percent less than on the downwind (顺风的) side. Sitting on the driver’s side of a bus can increase your exposure by 10%, compared with sitting on the side nearest the pavement. Sitting upstairs on a double-decker (双层电车) can reduce exposure. It is difficult to say whether traveling on an underground train is better or worse than taking the bus. Air pollution on underground trains tend to be less toxic (有毒的) than that at street level, coz underground pollution is mostly make up of tiny iron particles (粒子) thrown up by wheels hitting the rails. But diesel (柴油机) and petrol fumes have a mixture of pollutants. when you are crossing a road, stand well back from the curb (路缘) while you wait for the light to change. Every meter really does count when you are close to traffic. As the traffic begins to move, fumes can be reduced in just a few seconds. So holding your breath for just a moment can make a difference, even though it might sound silly. There are large sudden pollution increases during rush hours. Pollution levels fall during nighttime. The time of year also makes a big difference. Pollution levels tend to be at their lowest during spring and autumn when winds are freshest. Extreme cold or hot weather has a trapping effect and tends to cause a build-up of pollutants.