语言类
公务员类
工程类
语言类
金融会计类
计算机类
医学类
研究生类
专业技术资格
职业技能资格
学历类
党建思政类
全国英语等级考试(PETS)
大学英语考试
全国英语等级考试(PETS)
英语证书考试
英语翻译资格考试
全国职称英语等级考试
青少年及成人英语考试
小语种考试
汉语考试
PETS四级
PETS一级
PETS二级
PETS三级
PETS四级
PETS五级
单选题[此试题无题干]
进入题库练习
单选题After the American Revolution, ______ became the first capital of the United States, being already the largest city in North America. A. Philadelphia B. New York C. Boston D. Virginia
进入题库练习
单选题
进入题库练习
单选题
进入题库练习
单选题Gramley's remarks are mentioned to indicate that
进入题库练习
单选题The author thinks that in identifying the racially gifted children, it is worthwhile to ______.
进入题库练习
单选题______! A car is coming. [A] Look for [B] Look out [C] Look at
进入题库练习
单选题{{B}}Part A{{/B}} Read the following four texts. Answer the questions below each text by choosing [A], [B], [C] or [D]. Mark your answers on ANSWER SHEET 1.{{B}}Text 1{{/B}} We often hear advice from the dermatologists, "You should keep using sunscreen cream--just to be safe". More and more people are questioning about sunscream. Can sunscreen cream help protect me against melanomas? How safe are we in applying these chemical cocktails? Does it actually stop melanomas, the most dangerous type of skin cancer, from forming? As is known to all, sunscreen cream can protect the skin from the harmful effects of sun. The most .important function of it is the prevention of skin cancer. A great number of American people like to use it. Surprisingly, this kind of cancer is increasing in incidence faster than any other cancer in the United States. It seems that sunscreen actually increases the risk of skin cancer. More and more health experts are taking a discommendable attitude to the application of sunscreen. Researchers show that the earlier finding has many flaws and is unable to prove the exact function because they fail to take into account many exceptional cases. For instance, some people prefer to use sunscreen cream while going out. However, sunscreen cream users suffer from cancer more often. In fact, sunscreen cream allows people to remain exposed in the sun longer. People are likely to get skin problem under the sunshine for a long time. Besides, many people use the sunscreen cream in an inappropriate way. The sunscreen cream should be applied about half an hour before going outside, so the time is enough for the sunscreen to soak in and take effect. In fact, the protection of sunscreen will not last indefinitely. It should be reapplied at least every two hours when people stay outdoors for a prolonged period. After swimming, bathing, perspiring heavily, or drying off with a towel or handkerchief, you had better reapply it, too. Millions of gallons of sunscreen cream are consumed each year. Only 5% of products overall met the criteria for safety and sunscreen effectiveness. Three of five brand-name products can not protect the skin from sun damage sufficiently or they contain hazardous chemicals, according to a report by Environmental Working Group (EWG). It is time to change our misunderstanding now. In fact, besides the sunshine-preventing function, it also has the function of protecting our skin. We all know that the sun impacts collagen production in the skin, and without collagen, skin won't naturally maintain that plump, moist, youthful, wrinkle-free look. Without the protection of sunscreen cream, just a few minutes of daily sun exposure over the years can cause noticeable changes in skin. Sunscreen cream can protect our skin from these damaging rays, so that even if we do spend time outdoors, our face is less likely to give away our age.
进入题库练习
单选题
进入题库练习
单选题It can be difficult to poison the Earth because the Earth is always trying to clean and renew itself. Keeping this in mind, we should generate as much waste as possible from substances such as uranium. Besides, we must include persistent poisonous chemicals such as dichlorodiphenyl trichloroethane (DDT) to make sure we have enough toxins to poison the Earth from the core to the outer atmosphere. Then, we must develop many different ways of putting the waste in, on, and around the Earth. Putting these substances in the Earth is a most important step in the poisoning process. With deep-well injection, we can ensure that Earth is poisoned all the way to the core. The next best method is to bury toxins in the Earth. The toxins from dumps slowly seep into the Earth, guaranteeing that contamination will last a long time. Because there are only about 50,000 of these dumps in the United States, they should be located in areas where they will leak to the surrounding ground and surface water. Applying pesticides and other poisons on the Earth is another part of the poisoning process. This is good for coating the Earth"s surface so that the poisons will be absorbed by plants, will seep into the ground, and will run off into surface water. Surface water is very important to contaminate because it will transport the poisons to places that cannot be contaminated directly. Lakes are good for long-term storage of pollutants. In addition, we must use the ocean as a dumping place for as many toxins as possible. The ocean currents will help transport the pollution to places that cannot otherwise be reached. Now make sure that the air around the Earth is polluted. Combustion and evaporation are major mechanisms for doing this. We must continuously pollute because the wind will disperse the toxins while rain washes them from the air, but this is good because a few lakes are stripped of all living animals each year from acid rain. Because the lower atmosphere can clean itself fairly easily, we must explode nuclear test bombs that shoot radioactive particles high into the upper atmosphere where they will circle the Earth for years. So it is that easy. Just be sure to generate as many poisonous substances as possible, and be sure they are distributed in, on, and around Earth at a greater rate than where it can clean itself. By following these easy steps, we can guarantee the poisoning of Earth.
进入题库练习
单选题Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank. The use of nuclear power has already spread all over the world. {{U}} {{U}} 1 {{/U}} {{/U}}, scientists still have not agreed {{U}} {{U}} 2 {{/U}} {{/U}}what should be done with the large amounts of waste materials that {{U}} {{U}} 3 {{/U}} {{/U}}to increase every year. Most waste materials are {{U}} {{U}} 4 {{/U}} {{/U}}of simply by placing them somewhere. But nuclear waste must be {{U}} {{U}} 5 {{/U}} {{/U}}with great care. It {{U}} {{U}} 6 {{/U}} {{/U}}dangerous radiation and it will continue to be {{U}} {{U}} 7 {{/U}} {{/U}}for hundreds of, thousands, even millions of years. How should we get {{U}} {{U}} 8 {{/U}} {{/U}}of such waste material in such a way {{U}} {{U}} 9 {{/U}} {{/U}}it will not harm the {{U}} {{U}} 10 {{/U}} {{/U}}? Where can we {{U}} {{U}} 11 {{/U}} {{/U}}distribute it? One idea is to put this radioactive waste inside a thick container, which is {{U}} {{U}} 12 {{/U}} {{/U}}dropped to the deep bottom of the ocean. {{U}} {{U}} 13 {{/U}} {{/U}}some scientists believe that this way of {{U}} {{U}} 14 {{/U}} {{/U}}nuclear waste could kill fish and other living things in the oceans or interfere {{U}} {{U}} 15 {{/U}} {{/U}}their growth. Another way to {{U}} {{U}} 16 {{/U}} {{/U}}nuclear waste is to send it into space, to the sun, {{U}} {{U}} 17 {{/U}} {{/U}}it would be burned. Other scientists suggest that this polluting material be {{U}} {{U}} 18 {{/U}} {{/U}}thousands of meters under the earth's surface. Such underground areas must be free {{U}} {{U}} 19 {{/U}} {{/U}}possible earthquake. Advances are being made. But it may still be many years {{U}} {{U}} 20 {{/U}} {{/U}}this problem could be finally settled.
进入题库练习
单选题
进入题库练习
单选题There was a time when parents who wanted an educational present for their children would buy a typewriter, a globe or an encyclopedia set. Now those (21) seem hopelessly old-fashioned, this Christmas, there were a lot of (22) computers under the tree. (23) that computers are their key to success, parents are also frantically insisting that children (24) taught to use them on school as early as possible. The problem for schools is that when it (25) computers, parents don't always know best. Many schools are (26) parental impatience and are purchasing hardware without (27) educational planning so they can say, "OK, we've moved into the computer age. " Teachers (28) themselves caught in the middle of the problem—between parent pressure and (29) educational decisions. Educators do not even agree (30) how computers should be used. A lot of money is going for computerized educational materials (31) research has shown can be taught (32) with pencil and paper. Even those who believe that all children should (33) to computers warn of potential (34) to the very young. The temptation remains strong largely because young children (35) so well to computers. First graders have been (36) willing to work for two hours on math skills. Some have an attention span of 20 minutes. (37) school, however, can afford to go into computing, and that creates (38) another problem: a division between the havens and have-notes. Very few parents ask (39) computer instructions in poor school districts, (40) there may be barely enough money to pay the teacher.
进入题库练习
单选题
进入题库练习
单选题For centuries the most valuable of African resources for Europeans were the slaves, but these could be obtained at coastal ports, without any need for going deep inland. Slavery had been an established institution in Africa. Prisoners of war had been enslaved, as were also debtors and individuals guilty of serious crimes. But these slaves usually were treated as part of the family. They had clearly defined rights, and their slave status was not necessarily inherited. Therefore it is commonly argued that Africa"s traditional slavery was mild compared to the trans-Atlantic slave trade organized by the Europeans. This argument, however, can be carried too far. In the most recent study of this subject, some scholars warned against the illusion that "cruel and dehumanizing enslavement was a monopoly of the West. Slavery in its extreme forms, including the taking of life, was common to both Africa and the West. The fact that African slavery had different origins and consequences should not lead us to deny what it was—the exploitation and control of human beings." Neither can it be denied that the wholesale shipment of Africans to the slave plantations of the Americas was made possible by the participation of African chiefs who rounded up their fellow Africans and sold them as a handsome profit to European ship captains waiting along the coasts. Granting all this, the fact remains that the trans-Atlantic slave trade conducted by the Europeans was entirely different in quantity and quality from the traditional type of slavery that had existed within Africa. From the beginning the European variety was primarily an economic institution rather than social, as it had been in Africa. Western slave traders and slave owners were acted on by purely economic considerations, and were quite ready to work their slaves to death if it was more profitable to do so than to treat them more mercifully. This inhumanity was reinforced by racism when the Europeans became involved in the African slave trade on a large scale. Perhaps as a subconscious rationalization they gradually came to look down on Negroes as inherently inferior, and therefore destined to serve their white masters. Rationalization also may have been involved in the Europeans" use of religion to justify the traffic in human beings. It was argued, for instance, that enslavement assured the conversion of the African evil-believing religions to the true faith as well as to civilization.
进入题库练习
单选题[此试题无题干]
进入题库练习
单选题                          {{B}}Text 1{{/B}} Every body gets sick. Disease and injury make us suffer throughout our lives, until finally, some attack on the body brings our existence to an end. Fortunately, most of us in modem industrialized societies can take relatively good health for granted most of the time. In fact, we tend to fully realize the importance of good health only when we or those close to us become seriously ill. At such times we keenly appreciate the ancient truth that health is our most precious asset, one for which we might readily give up such rewards as power, wealth, or fame. Because iii health is universal problem, affecting the individual and society, the human response to sickness is always socially organized. No society leaves the responsibility for maintaining health and treating iii health entirely to the individual. Each society develops its own concepts of health and sickness and authorizes certain people to decide who is sick and how the sick should be treated. Around this focus there arises, over time, a number of standards, values, groups, statuses, and roles: in other words, an institution (体系,机构). To the sociologist (社会学家), then, medicine is the institution concerned with the maintenance of health and treatment of disease. In the simplest pre-industrial societies, medicine is usually an aspect of religion. The social arrangements for dealing with sickness are very elementary, often involving only two roles: the sick and the healer (治疗者). The latter is typically also the priest (牧师), who relies primarily on religious ceremonies, both to identify and to treat disease: for example, bones may be thrown to establish a cause, songs may be used to bring about a cure. In modern industrialized societies, on the other hand, the institution has become highly complicated and specialized, including dozens of roles' such as those of brain surgeon, druggist, hospital administrator, linked with various organizations such as nursing homes, insurance companies, and medical schools. Medicine, in fact, has become the subject of intense sociological interest precisely because it is now one of the most pervasive and costly institutions of modem society.
进入题库练习
单选题[此试题无题干]
进入题库练习
单选题The main difference between cancelable insurance policies and non-cancelable policies is______.
进入题库练习
单选题{{I}} You will hear three dialogues or monologues. Before listening to each one, you will have time to read the questions related to it. While listening, answer each question by choosing A, B, C or D. After listening, you will have time to check your answer. You will hear each piece ONLY ONCE.{{/I}} {{I}} Questions 11-13 are based on the following talk about the Dragon Boat Festival. You now have 15 seconds to read Questions 11-13.{{/I}}
进入题库练习