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： By 1862 telegraph communications linked San Francisco with eastern cities, and by 1869, the first transcontinental railroad connected the Pacific coast with the Atlantic sea-board. Today San Francisco has a population of almost three million. It is the financial center of the West, and serves as the terminus for trans-Pacific steamship lines and air traffic. The port of San Francisco, which is almost eighteen miles long with forty-two piers, handles between five and six million tons of cargo annually.
And now, if you will look to your right, you should just be able to see the east section of the Golden Gate Bridge. The bridge, which is more than one mile long, spans the harbor from San Francisco to Marin County and the Red Wood Highway. It was completed in 1937 at a cost of thirty-two million dollars and is still one of the largest suspension bridges in the world.
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Kelly is a small town north of Hopkinsville in Kentucky, South America.
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
There are two methods of fighting, the one by law, the other by force; the first method is that of men, the second of beasts; but as the first method is often insufficient, one must have recourse to the second. It is, therefore, necessary for a prince to know well how to use both the beast and the man. This was covertly taught to rulers by ancient writers, who related how Achilles and many others of those ancient princes were given to Chiron the centaur to be brought up and educated under his discipline. The parable of this semi-animal, semi-human teacher is meant to indicate that a prince must know how to use both natures, and that the one without the other is not durable.
A prince, being thus obliged to know well how to act as a beast, must imitate the fox, and the lion, for the lion cannot protect himself from traps, and the fox cannot defend himself from wolves. Those that wish to be only lions do not understand this. Therefore, a prudent ruler ought not to keep faith when By doing so it would be against his interest, and when the reasons which made him bind himself no longer exist. If men were all good, this precept would not be good; but as they are bad, and would not observe their faith with you, so you are not bound to keep faith with them. Nor have legitimate grounds ever failed a prince who wished to show colorable excuse for the non-fulfillment of his promise. Of this one could furnish an infinite number of examples, and show how many times peace has been broken, and how many promises rendered worthless, by the faithlessness of princes, and those that have best been able to imitate the fox have succeeded best. But it is necessary to be able to disguise this character well, and to be a great feigner and dissembler, and men are so simple and so ready to obey present necessities, that the one who deceives will always find those who allow themselves to be deceived.
The author of the passage does not believe that ______.
A．From chasing an animal.B．From rolling a body of a heavy animal on logs.C．From watchi
The forest from which man takes his timber is the tallest and most impressive plant community on Earth. In terms of man's brief life it appears permanent and unchanging, save for the seasonal growth and fail of the leaves, but to forester it represents the climax of a long succession of events.
No wooded landscape we see today has been forest for all time. Plants have minimum requirements of temperature and moisture and, in ages past, virtually every part of Earth's surface has at some time been either too dry or too cold for plants to survive. However, as soon as climatic conditions change in favor of plant life, a fascinating sequence of changes occurs, called a primary succession.
First to colonize the barren land are the lowly lichens, surviving on bare rock. Slowly, the acids produced by these organisms crack the rock surface, plant debris accumulates, and mosses establish a shallow root-hold. Ferns may follow and, with short grasses and shrubs, gradually form. a covering of plant life. Roots probe even deeper into the developing soil and eventually large shrubs give way to the first trees. These grow rapidly, cutting off sunlight from the smaller plants, and soon establish complete domination-closing their ranks and forming a climax community which may endure for thousands of years.
Yet even this community is not everlasting. Fire may destroy it outright and settlers may cut it down to gain land for pasture or cultivation. If the land is then abandoned, a secondary succession will take over, developing much faster on the more hospitable soil. Shrubs and trees are among the early invaders, their seeds carried by the wind, by birds and lodged in the coats of mammals.
For as long as it stands and thrives, the forest is a vast machine, storing energy and many elements essential for life.
What does the forest strike mankind as permanent？
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