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The importance of soil-keeping can never be over stressed for scientists observe tha

The importance of soil-keeping can never be over stressed for scientists observe that it takes nature 500 years to create an inch of topsoil.

A)土壤保持的重要性从来也没过多强调, 因为科学家说了自然界要花 500年才产生一英寸表层土壤。

B)科学家对土壤保持的重要性讨论还没结束,说要保护自然 500年才能得到一英寸表层土壤。

C)土壤保持非常重要,因为科学家指出自然形成一英寸厚的表层土壤要花 500年时间。

D)土壤保持的重要性怎么强调也不过分, 因为科学家指出形成一英寸厚的表层土壤要花500年的自然时间。

E)科学家对土壤保持的重要性讨论永远不会结束, 并说500年后表层土壤将不到一英寸。

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更多“The importance of soil-keeping…”相关的问题
第1题
In her essay "Place in Fiction" , Eudora Welty emphasizes the importance of______for liter
ary creations. She is noted for her fidelity to the American South, so her major theme relate to

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第2题
According to the author's observation, college students ______.A.have never been so materi

According to the author's observation, college students ______.

A.have never been so materialistic as today

B.have never been so interested in the arts

C.have never been so financially well off as today

D.have never attached so much importance to moral sense

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第3题
It is physically impossible for a wall-educated intellectual, or a brave man to make money
the chief object of his thoughts; as physically impossible as it is for him to make his dinner the principal object of them. All healthy people like their dinner, but their dinner is not the main object of their lives. So all healthy-minded people like making money--ought to like it and to enjoy the satisfaction of winning it; but the main object of their lives is not money; it is something better than money.

A good soldier, for instance, mainly wishes to do his fighting well. He is glad of his pay--very properly so, and just complains when you keep him ten months without it; still, his main opinion of life is to win battles, not to be paid for winning them.

So of doctors. They like fees no doubt--ought to like them; yet if they are brave and well educated, the entire object of their lives is not fees. They would rather cure their patient and lose their fees than kill him and get it. And so with all other brave and rightly trained men; their work is first, their fees second, very important always, but still second.

The main idea of this passage is that ______.

A.money matters more than work

B.money is not necessary at all

C.money is as important as work

D.money comes second to work in importance

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第4题
These are useful to man in three important ways: They provide him with wood and other prod
ucts; They give him shade and they help to prevent drought (干旱) and floods. Unfortunately, in many parts of the world, in his eagerness to draw quick benefit from the tree, man has cut down a large number of trees. Even where a government realizes the importance of plentiful supply of trees, it is difficult for it to persuade the villagers to see this. So unless the government has a great system of control, or can educate the people, the forests slowly disappear.

The resaults are more serious: for where there are trees their roots break the soil allowing the rain to sink and also hold the soil, thus preventing it from being washed away easily, but where there are no trees, the soil becomes hard and poor.

The rain falls on hard ground and flows away on the surface, causing floods, and carry away with it the rich top soil in which crops grow so well. When all the top soil is gone, nothing remains but worthless desert.

The purpose that the writer wrote this article for is ______.

A.to tell people that trees are very useful to man

B.to warn people not to cut down trees any more

C.to warn that man mustn't destroy forests any more

D.to explain how trees help to prevent drought and floods

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第5题
Everyday some 16m barrels of oil leave the Gulf through the Strait of Hormuz. That is enou
gh to fill a soft-drink can for everyone on earth, or to power every motor vehicle on the planet for 25 miles(40km). Gulf oil accounts for 40% of global trade in the sticky stuff. More important, it makes up two-thirds of known deposits. Whereas at present production rates the rest of the world's oil reserves will last for a mere 25 years, the Gulf's will last for 100. In other words, the region's strategic importance is set to grow and grow.

Or at least so goes the conventional wisdom, which is usually rounded out with scary talk of unstable, spendthrift regimes and a looming fundamentalist menace. Yet all those numbers come with caveats. A great deal of oil is consumed by the countries that produce it rather than traded, so in reality the Gulf accounts for less than a quarter of the world's daily consumption. As for reserves, the figures are as changeable as a mirage in the desert. The most comprehensive research available, conducted by the US Geological Survey, refers to an "expected" total volume for global hydrocarbon deposits that is about double current known reserves. Using that figure, and throwing in natural gas along with oil, it appears that the Gulf contains a more moderate 30% or so of the planet's future fossil-fuel supplies. Leaving out the two Gulf states that are not covered in this survey—Iran and Iraq—the remaining six between them hold something like 20% of world hydrocarbon reserves, not much more than Russia.

All the same, it is still a hefty chunk; enough, you might think, to keep the people living atop the wells in comfort for the foreseeable future. But you might be wrong. At present, the nations of the Gulf Co-operation Council have a combined national income roughly equal to Switzerland's, but a population which, at around 30m, is more than four times as big. It is also the fastest-growing on earth, having increased at nine times the Swiss rate over the past quarter-century. Meanwhile the region's share of world oil trade has fallen, as has the average price per barrel.

As a result, the income per person generated by GCC oil exports has been diminishing since the 1970s. True, surging demand from America and Asia has recently boosted the Gulf's share of trade, but the medium-term outlook for oil pries remains weak. Combined with continued growth in oil consumption, this should create sustained upward pressure on prices. And high oil prices will speed the search for alternatives. Who knows, in 20 years' time fuel cells and hydrogen power may have started to become commercial propositions.

In the eyes of the author, conventional opinion on the strategic importance of the Gulf oil is

A.unclear.

B.constructive.

C.reasonable,

D.exaggerated.

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第6题
Green-space facilities are contributing to an important extent to the quality of the urban
environment. Fortunately it is no longer necessary that every lecture or every book about this subject has to start with the proof of this idea. At present it is generally accepted, although more as a self-evident statement than on the base of a closely-reasoned scientific proof. The recognition of the importance of green-spaces in the urban environment is a first step on the right way, this does mean, however, that sufficient details are known about the functions of green-space in towns and about the way in which the inhabitants are using these spaces. As to this rather complex subject I shall, within the scope of this lecture, enter into one aspect only, namely the recreative function of green-space facilities.

The theoretical separation of living, working, traffic and recreation which for many years has been used in town-and-country planning, has in my opinion resulted in disproportionate attention for forms of recreation far from home, whether there was relatively little attention for improvement of recreative possibilities in the direct neighborhood of the home. We have come to the conclusion that this is not right, because an important past of the time which we do not pass in sleeping or working, is used for activities at and around home. So it is obvious that recreation in the open air has to begin at the street-door of the house. The urban environment has to offer as many recreation activities as possible, and the design of these has to be such that more obligatory activities can also have a recreative aspect.

The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets, because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street-door of your house is closed after you.

According to the author, the importance of green-spaces in the urban environment ______.

A.is still unknown

B.is usually neglected

C.is being closely studied

D.has been full recognized

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第7题
Text 4As the twentieth century began, the importance of formal education in the United Sta

Text 4

As the twentieth century began, the importance of formal education in the United States increased. The frontier had mostly disappeared and by 1910 most Americans lived in towns and cities. Industrialization and the bureaucratization of economic life combined with a new emphasis upon credentials and expertise to make schooling increasingly important for economic and social mobility. Increasingly, too, schools were viewed as the most important means of integrating immigrants in to American society.

The arrival of a great wave of southern and eastern European immigrants at the turn of the century coincided with and contributed to an enormous expansion of formal schooling. By 1920 schooling to age fourteen or beyond was compulsory in most states, and the school year was greatly lengthened. Kindergartens, vacation schools, extracurricular activities, and vocational education and counseling extended the influence of public schools over the lives of students, many of whom in the larger industrial cities were the children of immigrants. Classes for adult immigrants were sponsored by public schools, corporations, Unions, churches, and other agencies.

Reformers early in the twentieth century suggested that education programs should suit the needs of specific populations. Immigrant women were one such population. Schools tried to educate young women so they could occupy productive places in the urban industrial economy, and one place many educators considered appropriate for women was the home.

Although looking after the house and family was familiar to immigrant women. American education gave homemaking a new definition. In preindustrial economies, homemaking had meant the production as well as the consumption of goods, and it commonly included income-producing activities both inside and outside the home, in the highly industrialized early twentieth-century, United States. However, overproduction rather than scarcity was becoming a problem. Thus, the ideal American homemaker was viewed as a consumer rather than a producer. Schools trained women to be consumer homemakers cooking, shopping, decorating, and caring for children "efficiently" in their own homes, or if economic necessity demanded, as employees in the homes of others. Subsequent reforms have made these notions seem quite out-of-date.

36. It can be inferred from Paragraph 1 that one important factor in the increasing importance of education in the United States was ______.

A) the growing number of schools in frontier communities

B) an increase in the number of trained teachers

C) the expanding economic problems of schools

D) the increased urbanization of the entire country

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第8题
A letter of invitation is written to invite people for a business event or personal occasion.The letter should be short and clear.A soft and polite tone should be used.An invitation letter should have the date,time and the event.Always send the letter of invitation in advance.You need to let people know about at least a week before the event so that they can plan to cometo the event,Let's take a look at some steps that will help you outline a letter of invitation:Begin the letter with name and address of sender and receiver.Note the date.Start the main body of the letter with salutations, a word like“Dear”followed by thereceiver's name.Give the event in the first paragraph.Put relevant facts like date,time and place of the event in the beginning.Make that the receivers know the way to the place.Let the receivers know that they have to notice the inviters whether they will join the event or not before a certain date.The letter will note with the details of a contact person to confirmtheir attendance for the event.1.What's the purpose of writing a letter of invitation?()A.To invite people for a business event.B.To invite people for a personal occasion.C.Either A or B.2.Which is not necessary when writing a letter of invitation?()A.dateB.weatherC.place3.The letter of invitation should not be().A.shortB.easyC.clear4.Why should we send the letter of invitation in advance?()A.Because the invitation is important.B.Because the receiver will need to plan to come to the event.C.Because the receiver will forget to come to the event.5.Which might be the title of the whole passage?()A.How to write a letter of invitationB.The importance of writing a invitation letterC.The purpose of writing a invitation letter
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第9题
Our environment is getting worse and worse with the increase of the world population, whic
h affects the environment in two ways. Firstly, the limited energy resources will be used up much faster. Secondly, the increasing population creates more pollution, another severe problem that needs to be solved: Both problems are long-term ones because actions taken now show their results slowly over many years. They are also urgent because delays in action can lead to great suffering and social problems. The question seems to be difficult to handle for most people. However, a person can be a protector of environment in everyday life if he takes actions to save the environment right now. With the development of technology, cars make transportation easier and quicker than before, but we can't ignore the disadvantages brought to us by more and more cars in use. For example, we are consuming gasoline(汽油), which is a non-renewable (无法更新的)resource, and will soon be gone. Moreover, the exhausted gas from cars pollutes our air, and our health is therefore threatened by air pollution, which has a big potential effect on our daily life. So we can consider walking, taking buses, carpooling(合用汽车) instead of driving cars alone. This seems to be a very slow process that can't be so effective if it's taken by a single person. But when more and more people become aware of the importance and positively take it as their personal responsibilities, the condition of the air will be improved to a great extent.

According to the writer, the main problem to our environment today is______.

A.the increase of population

B.the limited energy resources

C.the more serious air pollution

D.the development of technology

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第10题
Ours has become a society of employees. A hundred years or so ago only one out of every fi
ve Americans at work was employed, i. e. , worked for somebody else. Today only one out of five is not employed but working for himself. And when fifty years ago "being employed" meant working as a factory laborer or as a farmhand, the employee of today is increasingly a middle-class person with a substantial formal education, holding a professional or management job requiring intellectual and technical skills. Indeed, two things have characterized American society during these last fifty years: middle-class and upper-class employees have been tile fastestgrowing groups in our working population—growing so fast that the industrial worker, that oldest child of the Industrial Revolution, has been losing in numerical importance despite the expansion of industrial production.

Yet you will find little if anything written on what it is to be an employee. You can find a great deal of very dubious advice on how to get a job or how to get a promotion. You can also find a good deal of work in a chosen field, whether it be the mechanist's trade or book-keeping(簿记). Every one of these trades requires different skills, sets different standards, and requires a different preparation. Yet they all have employeeship in common. And increasingly, especially in the large business or in government, employeeship is more important to success than the special professional knowledge or skill. Certainly more people fail because they do not know the requirements of being an employee than because they do not adequately possess the skills of their trade; the higher you climb the ladder, the more you get into administrative or executive work, the greater the emphasis on ability to work within the organization rather than on technical abilities or professional knowledge.

It is implied that fifty years ago _______.

A.eighty per cent of American working people were employed in factories

B.twenty per cent of American intellectuals were employees

C.the percentage of intellectuals in the total work force was almost the same as that of industrial workers

D.the percentage of intellectuals working as employees was not so large as that of industrial workers

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