If demand is elastic, how will an increase in price change total revenue？ Explain.

听力原文： A significant effort will be waged this year to bring more state-owned land used for non-agricultural purposes into paid land-use contract which will boost land available for agriculture. These lease or contracts agreements will regulate land use while bringing the State income that went uncollected previously.

To avert the misuse or loss of State land during the transformation, the State Land Administration (SLA) and its local agencies will appraise land use rights before contracting leases, share purchases or other usage agreements. This effort will not only add to the State revenue and improve the management of the land, but will ensure the best use of land resources and control its redistribution.

Over the past year, some 714,000 hectares of cultivated land have been taken over by industrial and residential development, 14% more than in the previous year. The figure matched the 1992 total, the worst year of China's farmland shrinkage in the last five years.

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A．How to increase farm land.

B．What is the biggest problem in agriculture.

C．How to satisfy the needs of the farmers.

D．A solution to problems in land use.

We use language primarily as a means of communication with

other human beings. Each of us shares with the community in

which we live a store of words and meanings as well as agreeing 【B1】______

conventions as to the way in which words should be arranged to 【B2】______

convey a particular message; the English speaker has in his disposal 【B3】______

a vocabulary and a set of grammatical rules which enables 【B4】______

him to communicate his thoughts and feelings, in a variety of

styles, to the other English speakers. His vocabulary, in particular, 【B5】 ______

both that which he uses actively and that which he recognizes,

increases in size as he grows old as a result of education and experience. 【B6】______

But, whether the language store is relatively small or large, the

system remains no more than a psychological reality for the individual,

unless he has a means of expressing it in terms able to be

seen by another member of his linguistic community; he has to give 【B7】______

the system a concrete transmission form. We take it for granted the 【B8】 ______

two most common forms of transmission—by means of sounds

produced by our vocal organs (speech) or by visual signs (writing). 【B9】______

And these are among most striking of human achievements. 【B10】______

【B1】

We use language every day. We live in a world of words. Hardly any moment passes with someone talking, writing or reading. Indeed, __1__languages is most essential to mankind. Our lives increasingly depend on fast and successful use of language. Strangely enough, we know __2__more about things around us than on ourselves. For example, language __3__is species specific, that is, it is language that differs human from __4__animals. However, we do not know yet how exactly we inquire language __5__and how it is possible for us to perceive through language; nor we __6__understand precisely the combinations between language and thought, __7__language and logic, or language and culture; still less, how and when language started. One reason for this inadequate knowledge of language is that we, like language users, take too many things for granted. __8__Language comes to every normal person so naturally that a few __9__

of us stop to question what language is, much less do we feel the necessity to study it. Language is far more complex than most people have probably imagined and the necessity to study it is far greater than some people may have assured. Linguistic is a branch of science which __10__takes language as its object of investigation.

powerful defines action tears express shape internally respond to personal good Language is one of the things that sets us apart as beings, one of the things that essentially ____1____ us as humans. When language is used well it can elicit very deep feeling in others, motivate others to ____2____ and define the nature of our relationships. Sometimes in poetry the juxtaposition of two words or a certain phrase can bring ____3____ to the eyes, call up a whole host of imagery and move us deeply. We have seen language recently used in the politics of persuasion, used for ____4____ or ill – depending on your viewpoint. When we use language to ____5____ our true feelings to someone it can open and deepen the connection between us. Language is a very ____6____ tool. How we use language shapes our world both ____7____ and externally. How you use self-talk – what you say to yourself about yourself and about the world directly ____8____ your experience of both yourself and the world. How you deliver communication shapes the way the world ____9____ you. We can use language more effectively in both spheres: internal and external and directly influence the health and power of our ___10_____ relationships and our business relationships. 请把你的答案按照顺序写在对应的题号后面！答案之间用分号隔开。 ___________________________

A the incidence of mesothelioma is extremely low

B which may extend from 25 to 30 year after initial exposure

C whereas the latter consist of a collection of fluid in the chest region outside the lungs

D on the other hand, are exclusively associated with exposure to the less harmful white asbestos

E suspect that exposure to even minimal levels of asbestos is unacceptable

F causing scarring which limits the functioning of the lungs

G resulting from inadequate ventilation

H develop the barrel-shaped chests associated with emphysema 肺气肿(where the skin assumes a bluish color) and club fingers

The inhalation of asbestos particles is associated with a number of lung diseases, such as asbestosis and lung cancer. Asbestosis is caused by the entry of asbestos particles into the walls of the alveoli, 【B1】______ . The lung loses its elasticity and may change shape. The initial symptoms of asbestosis are a tightness in the chest and breathlessness. In its later stages, sufferers 【B2】______ .

Lung cancer, the genetic term for malignant tumors of the alveoli and bronchial tubes, has been shown to be directly related to the inhalation of asbestos particles. As in the case of asbestosis, there is generally a period of latency 【B3】______ , despite the absence of further exposure. Research suggests that there is a direct correlation between the degree of exposure to asbestos and the incidence of lung cancers. Where exposure occurs, the level of risk is further increased by cigarette smoking. Asbestos workers who smoke cigarettes have a 90% greater risks of contracting lung cancer than workers who do not smoke.

Exposure to blue asbestos has been shown to produce mesothelioma, a rare cancer of the outer lining of the lung or pleura. In a normal population 【B4】______ . Where epidemiological surveys have revealed a higher incidence of the disease, it is almost always related to asbestos exposure.

【B1】______

Human beings are superior to other animals ______ they can use language to communicate.

A．in that

B．for which

C．on what

D．with whom

Human beings are superior to animals______they can use language as a tool to communicate.

A．like

B．while

C．when

D．for