单选题The British people and the American people not only speak the same language but ______ a lot of special customs as well. A. share B. spare C. hold D. carry

单选题The boy decided to study dancing ________ the fact that he had lost his left arm in a car accident.

单选题______ too often in many bookstores, the book did attract a large readers when it was broadcast on television.

单选题 (C) A computer is a machine with a complex network of electronic circuits ( 电路) that operate switches. The switches are capable of being in one of two possible states, that is, on or off. The machine is capable of storing and dealing with numbers, letters, and characters. The basic idea of a computer is that we can make the machine do what we want simply by inputting signals that turn certain switches on and turn others off. Computers are thought to have many remarkable powers. However, most computers, whether large or small, have three basic capabilities. First, computers have circuits for performing arithmetic operations, such as: addition, subtraction, division, multiplication and exponentiation. Second, computers have a means of communicating with the user. After all, if we couldn't feed information in and get results back, these machines wouldn't be of much use. However, certain computers (commonly minicomputers and microcomputers) are used to control directly things such as robots (机器人), medical instruments, etc. Some of the most common methods of inputting information are to use magnetic tape, disks, and terminals. The computer's input device reads the information into the computer. For outputting information, two common devices used are a printer which prints the new information on paper, or a CRT display screen which shows the results on a TV-like screen. Third, computers have circuits which can make decisions. The kinds of decisions which computer circuits can make are not of the type: 'Who would win a war between two countries?' or 'Who is the richest person in the world?' Unfortunately, the computer can only decide three things, namely: Is one number less than another? Axe two numbers equal? and, Is one number greater than another?

单选题Information has been released ______ more middle school graduates will be admitted into universities this year.

单选题There was a-free holiday for those who won the first ______.

单选题Had he ______ her promise, she would have made it to Yale University.

单选题There"s no doubt that your achievement ______ your hard work.

单选题The usual image of studying is of someone peering into a book, hoping to learn something. Study is a dull word for 1 fascinating ways to 2 the world of learning. A 5-year-old child must study to learn the alphabet. A team member in the National Football League must study the plays 3 by the coaches. All the practice sessions a pianist endures are 4 forms of study. The success of every learning experience in school or in a career depends on some 5 of studying, and not all studying is done with books. The biologist must inspect nature firsthand. The airline 6 must learn about wind and other weather 7 .Soldiers must be trained to 8 under the most difficult conditions. 9 , for most persons the reading of useful books is a 10 step to learning. The study that underpins learning is a lifelong pursuit. Although memory is vital to all learning, study is not 11 of memory only. Arithmetic problems, for instance, are mainly practice in using numbers in ways already learned. Reading, spelling, and writing are skill subjects too and require practice. By repeated effort, 12 in these subjects is increased 13 typing and driving are. They are tool subjects, or stepping stones, 14 the learner increases knowledge and expands it into other areas. The sciences, language arts, and social studies are skill subjects only in part. They also give the learner practice in understanding the 15 between ideas and events, or cause and effect. Some facts and skills are learned by taking part in activities. Some are learned by 16 what others do or by reading about 17 has happened. In every 18 a background of information from experience or study can help speed the learning process. The textbook is the most common 19 for school use. It establishes the 20 by which learning proceeds. It frequently includes practice problems and activities that allow the learner to use what has been learned.

单选题Before long, through the door came in a tall, unimpressive-looking man of about 40.

单选题It is impossible for all of the people to get the jobs because ______ them are not fit for the work. A. neither of B. some of C. both of D. none of

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单选题______ by the failure of the project, the manager could hardly say a word.

单选题His mother ______ his doing some washing by himself.

单选题No wonder those plants are dying. They ______ any water for ages!

单选题Carelessness was the ______ of the fires. A. reason B. result C. effect D. cause

单选题In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn"t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts : The more the men ran the more body fat they lost. The more they ran the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.

单选题You ______ all the trouble had you known he was not there. A. mustn't take B. mustn't have taken C. needn't have taken D. needn't take

单选题There has been a great increase in retail sales, ______?

单选题If the parents can ______ it, each child should have his or her own bedroom.