单选题His English is excellent because he has been speaking since he ______ a boy of twelve.

单选题A.Sofas.B.Tables.C.Beds.D.Bookshelves.

单选题How do most students pay for their college expenses?

单选题It is strange that Mr. Green ______ attend the meeting.

单选题A sick or injured person can obtain medical care in several different places. These include provider practices such as medical offices and clinics, hospitals and nursing homes. There are about 200,000 medical offices, clinics, and other provider practices in the United States. Earlier in the 20th century most physicians were single people working in their own offices or in partnership with another doctor. Patients visited the office, received an examination or other service, and paid a fee. This traditional fee-for-service medicine has been declining. Many physicians now practice in groups where they share the same offices and equipment with other doctors. Group practices may combine primary care physicians, several kinds of specialists, laboratories, and equipment for diagnosing disease. Physicians who practice in a group reduce their own expenses and provide patients with a wider range of services. Many doctors are joining with hospitals, insurance companies, and industrial employers to provide managed care for groups of patients. These plans manage to avoid unnecessary services and reduce costs. Rather than taking a fee from each patient, managed care physicians may receive an annual salary from a fixed sum for each patient. Patients who are too sick for care in a doctor's office go to a hospital. Hospitals offer Patients 24-hour care from a staff of health professionals. They provide services not available elsewhere, such as major surgery, child birth, and intensive care for the critically ill. Hospital care is the most expensive form of health care. Efforts to control health care costs have emphasized reducing the number of patients admitted to hospitals and their length of stay. During the 1980s and 1990s, these efforts led to the closing of more than 600 hospitals. Patients who need long-term medical care because of advanced age or chronic illness may stay in a nursing home. The United States has about 23,000 nursing homes with about 1.3 million patients.

单选题Directions:This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 to 45. Did you ever look up at the moon and think you saw a man' s face there? When the moon is round and full, the shadows of the moon mountains and the lines of the moon valleys sometimes seem to show a giant nose and mouth and eyes. At least, some people think so. If there were a man on the moon——instead of mountains and valleys that just look like the face of a man——what would he be like? He would not be like anyone you know. He would not be like anyone anybody knows. If the man on the moon were bothered by too much heat or cold the way Earth people are, he could not stay on the moon. The moon becomes very, very hot. It becomes as hot as boiling water. And the moon becomes very, very cot. It becomes colder than ice. Whatever part of the moon the sun shines on is hot and bright. The rest of the moon is cold and dark. If the man on the moon had to breathe to stay alive, he couldn ' t live on the moon because there' s no air there. ( He' d have to carry an oxygen tank, as astronauts do. ) There' s no food on the moon, either. Nothing grows——not even weeds. If the man on the moon liked to climb mountains, he would be very happy. There are many high places there, such as the tall rims around the holes, or craters (陨石坑), of the moon. Some of these rims are as tall as Earth's highest mountains. But if the man on the moon liked to swim, he would be unhappy. There is no water on the moon——just dust and rock. When you think of what it' s like on the moon, you may wonder why it interests our scientists. One reason is that the moon is Earth' s nearest neighbor——it is the easiest place in space to get to. Going back and forth between the moon and Earth, astronauts will get a lot of practice in space travel. Things learned on moon trips will be of great help to astronauts who later take long, long trips to some of the planets. Scientists are also interested in the moon because it has no air. The air that surrounds Earth cuts down the view of the scientists who look at the stars through telescopes. A telescope on the moon would give them a clearer, closer view of the star.

单选题A.Doctorandpatient.B.Husbandandwife.C.Teacherandstudent.D.Motherandson.

单选题Scientists have been puzzled for decades by how turtles manage to navigate across the Atlantic — but now they know. The creatures have their own inbuilt magnetic compass. A laboratory experiment has revealed that the tiny turtles are born with the ability to "detect" the magnetic fields which help them to navigate the 8,000 miles across the stormy Atlantic Ocean and back home again. After hatching from eggs laid in nests along beaches in Florida, baby turtles swim out into this current and flow with it for years, nudged along by warm waters rich in food. They seem to use both the intensity and direction of the magnetic field to navigate. It is also found that turtles born in the Pacific are genetically imprinted with a different magnetic map for currents from those in the Atlantic. They would soon perish in the Atlantic.

单选题He ______ for her for one hour by the time she arrived there.

单选题Some of the experiments ______ in the book are easy to perform.

单选题[此试题无题干]

单选题The young mother tried her best to keep her temper, but in the end her patience ran ______.

单选题The rules that we learn from context ______.

单选题The contract is a clear violation of the original agreement- in particular of the international law.

单选题A.Tothehospital.B.Tothebeach.C.Tohisuniversity.D.Tohishometown.

单选题An average of 52.4% of domestic travelers went on sightseeing tours during this year, an increase of 8.7% compared with the previous year.

单选题A.Hewilllendhisbiketothewoman.B.Hecan'tlendhisbiketothewoman.C.Hedoesn'twanttolendhisbiketothewoman.D.Hewantsthewomantofindthekey.

单选题Most of us take life for granted．We know that one day we must die, but usually we picture that day as far in the future．When we are in buoyant health, death is all but unimaginable．We seldom think of it．The days stretch out in an endless future．So we go about our petty tasks, hardly aware of our listless attitude toward life．

单选题______ in the classroom now is not allowed.

单选题Every means ______ tried, but we still cannot solve this problem.