题目内容
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： A credit card permits its holders to buy goods or obtain services without immediate payment. Possession of a card identifies the owner, who can obtain consumer credit. Each card has an account of number which is recorded by the seller, who sends it to a central billing office. The office calculates the total price of purchases by the card holder during the month and sends him a bill. The buyer sends his check to the central office, which allocates the money to establishments extending credit.
Credit cards were used in some American stores during the 1920s, but they did not gain wide acceptance. In 1938 rival American oil companies issued them to consumers and established a national pool to honor each company's card. This was the start of the credit card's popularity.
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A．They came from the original wing.B．They're made of the same material.C．They're simil
The trouble with the term "behavior" is that it is often taken to refer only to more or less overt, and describable, physical movements and acts. Yet part of language behavior. -- that of understanding spoken or written language, for example -- has little or no physically observable signs. It is true we can sometimes infer that understanding has taken place by the changes that take place in the other person's behavior. When someone has been prohibited from doing something, we may infer that he has understood the prohibition by observing that thereafter he never behaves in that way. We cannot, of course, be absolutely sure that his subsequent behavior. is a result of his understanding; it might be due to a loss of interest or inclination. So behavior. must be taken to include unobservable activity, often only to be inferred from other observable behavior.
Once we admit that the study of language behavior. involves describing and explaining the unobservable, the situation becomes much more complicated, because we have to postulate some set of processes, some internal mechanism, which operates when we speak and understand. We have to postulate something we can call a mind. The study of language from this point of view can then be seen as a study of the specific properties, processes and states of the mind whose outward manifestations are observable behavior; what we have to know in order to perform. linguistically.
This approach to language, as a phenomenon of the individual, is thus principally concerned with explaining how we acquire language, and its relation to general human cognitive systems, and with the psychological mechanisms underlying the comprehension and production of speech: much less with the problem of what language is for, that is, its function as communication, since this necessarily involves more than a single individual.
What is the best title for this passage？
A．Whether it can be detected and checked.B．Whether it will lead to widespread food sho
A．Many species have moved further north.B．Many new species have come into existence.C．
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