单选题Unlike gases, liquids are difficult to compress because there is practically no free space between molecules.A. In contrast toB. Similar toC. More toD. Just as

单选题The normal price of a ticket for an adult is $ 230.A. ordinaryB. properC. fairD. medium

单选题You startled me when you shouted.

单选题She {{U}}exhibited{{/U}} great powers of endurance during the climb. A. play B. send C. show D. tell

单选题From the beginning, water has furnished mail with a source of food and a highway to travel upon. The first civilizations arose where water was a dominant element in the environment, a challenge to man's ingenuity. The Egyptians invented the 365 - day calendar in response to the Nile's annual flooding. The Babylonians, who were among the most famous law -makers in ancient times, invented laws regulating water usage. Water inspired the Chinese to built a 1,000 - mile canal - a complex system, which, after nearly 2,500 years, remains still practically in use and still commands the astonishment of engineers. But the ancients never found complete solutions to their water problems. The Yellow River is also known as" China's Sorrow" ;it is so unpredictable and dangerous that in a single flood it has caused a million deaths. Floods slowed the great civilization of the Indus River Valley, and inadequate drainage ruined much of its land. Today water dominates man as it always has done. Its presence continues to govern the location of his homes and cities; its violent variability can kill man or his herds or his crops; its routes links him to his fellows; its immense value may add to already dangerous political conflicts. There are many examples of this in our own time. Who of the following were among the most famous law makers?A. The ancient Chinese.B. The ancient Egyptians.C. The ancient Babylonians.D. The ancient Indians.

单选题While we don"t agree, we continue to be friends.

单选题The State of Marriage Today Is there something seriously wrong with marriage today? During the past 50 years the rate of divorce in the United States has exploded: almost 50% of marriages end in divorce now, and the evidence suggests it is going to get worse. If this trend continues, it will lead to the break up of the family, according to a spokesperson for the National Family Association. Some futurists predict that in 100 years, the average American will many at least four times, and extramarital affairs will be even more common than they are now. But what are the reasons for this, and is the picture really so gloomy? The answer to the first question is really quite simple: marriage is no longer the necessity it once was. the institution of marriage has been based for years partly on economic need. Women used to be economically dependent on their husbands as they usually didn't have jobs outside the home. But with the rising number of women in well-paying jobs, this is no longer the case, so they don't feel that they need to stay in a failing marriage. In answer to the second question, the outlook may not be as pessimistic as it seems, While the rate of divorce has risen, the rate of couples marrying has never actually fallen very much, so marriage is still quite popular. In addition to this. many couples now cohabit and don't bother to marry. These couples are effectively married, but they do not appear in either the marriage or divorce statistics. In fact, more than 50~ of first marriages survive. The statistics are deceptive because there is a higher number of divorces in second and third marriages than in first marriages. So is marriage really an outdated institution? The fact that most people still get married indicates that it isn't. And it is also true that married couples have a healthier life than single people: they suffer less from stress and its consequences, such as heart problems, and married men generally consider themselves more contented than their single counterparts. Perhaps the key is to find out what makes a successful marriage and apply it to all of our relationships!

单选题In a bullfight, it is the movement, not the color, of objects that arouses the bull.

单选题I can't {{U}}put up with{{/U}} my neighbor's noise any longer; it's driving me mad．

单选题 Medical Journals Medical journals are publications that report medical information to physicians and other health professionals. In the past, these journals were available only in print. With the development of electronic publishing, many medical journals now have Web sites on the Internet, and some journals publish only online. A few medical journals, like the Journal of the American Medical Association, are considered general medical journals because they cover many fields of medicine. Most medical journals are specialty journals that focus on a particular area of medicine. Medical journals publish many types of articles. Research articles report the results of research studies on a range of topics varying from the basic mechanisms of diseases to clinical trials that compare outcomes of different treatments. Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature. Because the results of individual research studies can be affected by many factors, combining results from different studies on the same topic can be helpful in reaching conclusions about the scientific evidence for preventing, diagnosing or treating a particular disease. Case conferences and case reports may be published in medical journals to educate physicians about particular illnesses and how to treat them. Editorials in medical journals are short essays that express the views of the authors, often regarding a research or review article published in the same issue. Editorials provide perspective on how the current article fits with other information on the same topic. Letters to the editor provide a way for readers of the medical journal to express comments, questions or criticisms about articles published in that journal.

单选题Where Did All the Ships Go? The Bermuda Triangle is one (51) the greatest mysteries of the sea. In this triangular area between Florida, Puerto Rico and Bermuda in Atlantic, ships and airplanes (52) to disappear more often than in (53) parts of the ocean. And they do so (54) leaving any sign of all accident or any dead bodies. It is (55) that Christopher Columbus was the first person to record strange happenings in the area. His compass stopped working, a flame came clown from the sky, and a wave 100 to 200-feet-high carried his ship about a mile away. The most famous disappearance in the Bermuda Triangle was the US Naval Air Flight 19. (56) December 5,1945, five bomber planes carrying 14 men (57) on a training mission from the Florida coast. Later that day, all communications with Flight 19 were lost. They just disappeared without a trace. The next morning, 242 planes and 19 ships took part in the largest air-sea search in history. But they found nothing. Some people blame the disappearances (58) supernatural forces. It is suggested the (59) ships and planes were either transported to other times and places, kidnapped by aliens (60) attacked by sea creatures. There are (61) natural explanations, though. The US Navy says that the Bermuda Triangle is one of two places on earth (52) a magnetic compass points towards true north (63) magnetic north. (64) planes and ships can lose their way if they don't make adjustments. The area also has changing weather and is known (65) its high waves. Storms can turn up suddenly and destroy a plane or ship. Fast currents could then sweep away any trace of an accident.

单选题I tried very hard to persuade him to join our groups but I met with {{U}}flat refusal{{/U}}. A. disapproval B. rejection C. refusal D. decline

单选题Muren feels that with CG technology, just about any special effect can be achieved.

单选题The government should promote teaching as a career by advertising_____

单选题Do you believe these two {{U}}intimate{{/U}} friends used to be enemies?

单选题Dotting the marshy expanse of the Florida Everglades are little islands known locally as hummocks.

单选题{{B}}第三篇{{/B}} Faster Effective Reading A higher reading rate, with no loss of comprehension, will help you in other subjects as well as in English, and the general principles apply to any language. Naturally, you will not read every book at the same speed. You would expect to read a newspaper, for example, much more rapidly than a physics or economics textbook—but you can raise your average reading speed over the whole range of materials you wish to cover so that the percentage (百分比) gained will be the same whatever kind of reading you are concerned with. The reading passages which follow are all of an average level of difficulty for your stage of instruction. They are all about five hundred words long. They are about topics of general interest which do not require a great deal of specialized knowledge. Thus they fall between the kind of reading you might find in your textbooks and the much less demanding kind you will find in a newspaper or light novel. If you read this kind of English, with understanding at, say, four hundred words per minute, you might drop to two hundred or two hundred and fifty. Perhaps you would like to know what reading speeds are common among native Englishspeaking university students and how those speeds can be improved. Tests in Minnesota, U. S. A, for example, have shown that students without special training can read English of average difficulty, for example, Tolstoy's War and Peace in translation, at speeds of between 240 and 250 words per minute with about seventy percent comprehension. Students in Minnesota claim that after twelve half-hour lessons, once a week, the reading speed can be increased, with no loss of comprehension, to around five hundred words per minute.

单选题There has been a {{U}}boom{{/U}} in economy in recent years.

单选题David likes country life and has decided to undertake fanning.

单选题These factories were closed for failing to {{U}}comply{{/U}} with the air-pollution laws issued by the Government.