单选题What will man be like in the future—in 5,000 or even 50,000 years from now? We can only make a guess, of course, but we can be sure that he will be different from what he is today. For man is slowly changing all the time. Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller. Five hundred years is a relatively short period of time, so we may assume that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain"s capacity. As time goes on, however, we shall have to use our brains more and more, and eventually we shall need larger ones! This is likely to bring about a physical change too: the head, in particular the forehead, will grow larger. Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we have to wear glasses. But over very long period of time it is likely that man"s eyes will grow stronger. On the other hand, we tend to make less use of our arms and legs. These, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modem life. But what about hair? This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer. In the future, then, both sexes are likely to be bald! Perhaps all this gives the impression that future man will not be a very attractive creature to look at! This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us. He will still be a human being, with thoughts and emotions similar to our own.

单选题Which of the following adjectives can be used to describe the author's feeling towards Franklin?

单选题One phase of the business cycle is the expansion phase. This phase is a two-fold one, including recovery and prosperity. During the recovery period there is ever-growing expansion of existing facilities, and new facilities for production are created. More businesses are created and older ones expanded. Improvements of various kinds are made. There is an ever increasing optimism about the future of economic growth. Much capital is invested in machinery or "heavy" industry. More labor is employed. More raw materials are required. As one part of the economy develops, other parts are affected. For example, a great expansion in automobiles results in an expansion of the steel, glass, and rubber industries. Roads are required. Thus the cement and machinery industries are stimulated. Demand for labor and materials results in greater prosperity for workers and suppliers of raw materials, including farmers. This increases purchasing power and the volume of goods bought and sold. Thus prosperity is diffused among the various segments of the population. This prosperity period may continue to rise and rise without an apparent end. However, a time comes when this phase reaches a peak and stops spiraling upwards. This is the end of the expansion phase.

单选题When imaginative men turn their eyes towards space and wonder whether life exists in any part of it, they may cheer themselves by remembering that life need not resemble closely the life that exists on Earth. Mars looks like the only planet where life like ours could exist, and even this is doubtful. But there may be other kinds of life based on other kinds of chemistry and they may multiply on Venus or Jupiter. At least we cannot prove at present that they do not. Even more interesting is the possibility that life on their planets may be in a more advanced stage of evolution. Present-day man is in a peculiar and probably temporary stage. His individual units retain a strong sense of personality. They are, in fact, still capable under favorable circumstances of leading individual lives. But man"s societies are already sufficiently developed to have enormously more power and effectiveness than the individuals have. It is not likely that this transitional situation will continue very tong on the evolutionary time scale. Fifty thousand years from now man"s societies may have become so close-knit that the individuals retain no sense of separate personality. Then little distinction will remain between the organic parts of the multiple organism and the inorganic parts (machines) that have been constructed by it. A million years further on man and his machines may have merged as closely as the muscles of the human body and the nerve cells that set them in motion. The explorers of space should be prepared for some such situation. If they arrive on a foreign planet that has reached an advanced stage (and this is by no means impossible), they may find it being inhabited by a single large organism composed of many closely cooperating units. The units may be "secondary"—machines created millions of years ago by a previous form of life and given the will and ability to survive and reproduce. They may be built entirely of metals and other durable materials, if this is the case, they may be much more tolerant of their environment multiplying under conditions that would destroy immediately any organism made of carbon compound and dependent on the familiar carbon cycle. Such creatures might be relics of a past age, many millions of years ago, when their planet was favorable to the origin of life or they might be immigrants from a favored planet.

单选题In 1931, Joseph Stalin invited George Washington Carver to superintend cotton plantations in southern Russia and to make a tour of the Soviet Union, but he refused.

单选题The trucks ______ heavy goods-from factories to the ports. A. pull B. haul C. drag D. push

单选题Britain's Channel Four television sent him to New York to do a(n) ______ interview for its "The World" programme. A. alive B. lively C. live D. alive

单选题He cannot ______ the fact that he was late again for the conference at the university yesterday.

单选题We have many holidays from the end of March till the beginning of April They are the best days for ______. A. blade B. coincidence C. balcony D. entertainment

单选题Ms. Breen has been living in town for only one year, yet she seems to be ______ with everyone who comes to the store. A. accepted B. admitted C. admired D. acquainted

单选题Throughout the history of life, species of living creatures have made use of chemical energy by the slow combination of certain chemicals with oxygen within their cells. The process is analogous to combustion, but is slower and much more delicately controlled. Sometimes use is made of energy available in the bodies of stronger species as when a remora hitches a ride on a shark or a human being hitches an ox to a plough. Inanimate sources of energy are sometimes used when species allow themselves to be carried or moved by wind or by water currents. In those cases, though, the inanimate source of energy must be accepted at the place and time that it happens to be and in the amount that happens to exist. The human use of fire involved an inanimate source of energy that was portable and could be used wherever desired. It could be ignited or extinguished at will and could be used when desired. It could be kept small of feed till it was large, and could be used in the quantities desired. The use of fire made it possible for human beings, evolutionarily equipped for mild weather only, to penetrate the temperate zones. It made it possible for them to survive cold nights and long winters, to achieve security against fire-avoiding predators, and to roast meat and grain, thus broadening their diet and limiting the danger of bacterial and parasiticinfestation. Human beings multiplied in number and that meant there were more brains to plan future advances. With fire, life was not quite so hand-to-mouth; and there was more time to put those brains to work on something other than immediate emergencies. In short, the use of fire put into motion an accelerating series of technological advances. About 10,000 years ago, in the Middle East, a series of crucial advances were made. These included the development of agriculture, herding, cities, pottery, metallurgy, and writing. The final step that of writing, took place in the Middle East about 5,000 years ago. This complex of changes stretching over a period of 5,000 years introduced what we call civilization, the name we give to a settled life, to a complex society in which human beings are specialized for various tasks. To be sure other animals can build complex societies and can be composed of different types of individuals specialized for different tasks. This is most marked in such social insects as bees, ants, and termites where individuals are in some cases physiologically specialized to the point where they cannot eat, but must be fed by others. Some species of ants practice agriculture and grow small mushroom gardens, while others herd aphids; still others war on and enslave smaller species of ants. And, of course, the beehive and the ant or termite colony have many points of analogy with the human city. The most complex nonhuman societies', those of the insects, are, however, the re-suit of instinctive behaviour, the guidelines of which are built into the genes and nervous systems of the individuals at birth. Nor does as any nonhuman society make use of fire. With insignificant exceptions, insect societies are run by the energy produced by the insect body. It is fair, then, to consider human societies as basically different from other societies and to attribute what we call civilization to human societies only.

单选题Everyone should be ______ to a decent standard of living and an opportunity to be educated.(厦门大学2011年试题)

单选题I don't mind ______ criticism, but if you are just going to insult me I am not staying. A. relative B. productive C. descriptive D. constructive

单选题His career _______ in his appointment as director.

单选题Although often extremely critical of the medical profession as a whole, people are rarely willing to treat their personal doctors with equal ______.

单选题Which of the following is a true statement?

单选题Millions of people died in the 14th century as the result of a (an) ______ known as the Black Death.

单选题To appropriately recognize donors for their generosity, you should always ______ their names under the appropriate membership category in your annual report.

单选题The author's opinion on the educational exchange on both sides of Taiwan Strait is ______.

单选题The kitchen was small and ______ so that the disabled woman could reach everything without difficulty. A.complex B.complete C.compact D.composite