题型:任务型阅读 题类:常考题 难易度:普通
湖南省岳阳市第一中学2017-2018学年高二下学期英语期末考试试卷
Steel is a hard metal that people use to make many different products. Car bodies, bridges, building frames, and containers are just a few of the things made from steel. But steel is better than iron in many ways. Steel is stronger but lighter than iron. Steel also lasts longer than iron.
Then they add carbon to the liquid iron. They may also add other materials to make different types of steel. For example, steel with added chromium(铬)is called stainless steel. It will not rust(生锈)or stain. Finally, workers use machines to cool the liquid steel into bars or long sheets.
People made the first steel as early as 1400 BC. Ancient people heated iron inside a pile of burning charcoal(木炭). . The result was not the same as modern steel, but it was stronger than regular iron.
In the 1800s people began to use huge ovens to make large amounts of steel. In the late 1800s builders used steel to make some of the first skyscrapers. . In the 1900s new processes made steel-making easier. Today steel remains one of the most popular building materials in the world.
A. This added carbon to the iron.
B. Steel is quite different from iron.
C. The hardened steel may then be made into products.
D. Steel is basically iron mixed with a little carbon.
E. Then they will be cooled and put on the market.
F. To make steel, workers hear iron until it melts.
G. They also used steel to make large, modern bridges.
Asthma(哮喘) is a long-lasting breathing disease that affects millions of Americans, many of whom are children. People who get asthma will suffer from lack of breath, difficulty in breathing or coughing--which are caused by the tightening of the muscles in airways. Untreated asthma can lead to poor lung function and death, but asthma can also be effectively controlled with proper treatments.
Research is discovering genes that contribute to the development of asthma. This development has pointed researchers to the role of indoor and outdoor pollution as environmental factors that contribute to the increased occurrence of asthma.
The Indoor Pollution
Indoor pollution has increased with the developments in building materials and in heating and air conditioning systems. In addition to poisonous gases that come from paint, other materials like dust and perfumes used in household products such as washing powder are recycled continuously through the house, winter and summer.
Unlike the days before central heating or before whole-house air conditioning, these materials and chemicals cannot get out of modern homes. Most often, they cause breathing problems in the members of the family with the least-developed autoimmune(自身免疫的) systems. Proper venting (通风) and use of environmentally-friendly building materials and carpeting can help reduce the presence of these chemicals.
The Out door pollution
Researchers have also established outdoor pollution's role as a probable cause of asthma. Asthma has been proven to result from some fuel products. Smog and the small matters carried by it have been recognized as a factor which leads to asthma since the 19th century when London saw more and more diseases in the industrial population. Industrial pollutants and other chemicals which are produced in water treatment and open treated water like that found in the swimming pools also contribute to increased cases of asthma as well as other illnesses.
Those most affected by the increase of industrial and environmental pollution are children. Although much has been done to control the levels of pollution in the US, there still remains much to do as it is a worldwide phenomenon. Until an international effort can be made to limit carbon emissions, the occurrence of environmental asthma will probably continue to increase.
The {#blank#}1{#/blank#} between asthma and air pollution | ||
The {#blank#}2{#/blank#} of asthma | ● lack of breath ● difficulty in breathing ● coughing | |
The possible {#blank#}3{#/blank#} of untreated asthma | ● poor lung function ● death | |
{#blank#}4{#/blank#} contributing to the increased asthma | Indoor pollution | ●It is {#blank#}5{#/blank#} by building materials and heating and air conditioning systems. ●{#blank#}6{#/blank#} some poisonous gases, dust and perfumes worsen pollution. ●Some material and chemicals{#blank#}7{#/blank#} in modern homes. |
Outdoor pollution | ●Smog and the small matters carried by it cause asthma, which is proven by a(n) {#blank#}8{#/blank#} number of lung diseases in the industrial population. ●Industrial pollutants and other chemicals in water are{#blank#}9{#/blank#} to people's health.79 to people's health. | |
Conclusion | Only when all countries join together to limit carbon emissions can people be {#blank#}10{#/blank#} rom suffering environmental asthma. |
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