单选题I had great difficulty ______ the suitable food on the menu in that restaurant.

单选题Psychology is the study of the mind and mental activities. For example, psychologists are interested in why some things make you sad, but others make you happy. They want to know why some people are shy, but others are quite talkative. They also want to know why people do the things that they do. They test intelligence. Psychologists deal with the minds and behavior of people. Your mind consists of all your feelings, thoughts, and ideas. It is the result of one part of the brain called the cerebrum. Your behavior is the way you act or conduct yourself. Examples of behavior include shouting, crying, laughing, and sleeping. Several people have been instrumental in the field of psychology. Wilhelm Wudt set up the first psychological laboratory in Germany, in 1879. Ivan Pavlov, a Russian, is noted for hisexperiments with dogs in which he studies their reflexes and reactions. Around 1900, Sigmund Freud stated his theory that people try to repress any memories or thoughts that they believed were not good. Psychologists should not be confused with psychiatrists. Psychiatrists deal only with mental illness. They are medical doctors who treat people.

单选题He changed his name, ______ that nobody would find out what he had done before. A. having thoughtB. to think C. thinks D. thinking

单选题He was ______ admittance to the concert hall for not being properly dressed.

单选题He believes that happiness ______ being easily pleased or satisfied.

单选题It is impossible for all of the people to get the jobs because ______ them are not fit for the work.

单选题Hangzhou is famous for the beautiful ______ of West Lake.

单选题______ enough money, we began to carry out our traveling plan.

单选题Would you please pass me the book ______ cover is black?

单选题In 1987, a survey was given to 5000 high school seniors. It showed that they did not know geography. Students in Boston were questioned. One-third of them could not name six New England states. Students in Baltimore were questioned. Half could not shade in the United States on map. Here is what another survey showed. Students did not know history. Most did not know the dates of the American Civil War. Many did not know World War Ⅱ leaders. Someone else asked this question. What did students think of social studies? Their answer: social studies was not important. They said it was the least important of their studies. What is social studies? It is the study of individuals. It is the study of groups. It is the study of societies. Social studies covers many fields. You have read about history and geography. These are part of social studies. It covers many other areas as well. Let"s say you study the way people live together in groups. This is an area of social studies. So is learning about very early people. So is studying government. Is social studies important? Early Americans thought so. Students then learned history and civics. This was to make them good citizens. A report from 1916 set a new goal. It said, "The social studies should cultivate a sense of membership in the world community." The world community is very large. But today it is easy to share ideas in it. We have radio and TV. We have phones. We have computers. Social studies helps us understand the world"s people. It helps us know groups and societies. The 1916 goal was important then. It is even more important now. We all need to be good world citizens.

单选题No sooner ______ begun to speak than some noise arose from the audience.

单选题He didn't thank me for the present. That is ______ annoyed me. A. which B. that C. what D. how

单选题There are many kinds of steel, each ______ its special use in industry. A. having B. will have C. has D. is having

单选题The students expected ______ more lectures on the current situation.

单选题 (B) If one takes a sample of the element gold and starts breaking it into smaller and smaller and smaller pieces, it seems reasonable that one will eventually (最终) reach a "smallest possible piece" of gold that could not be divided further and still be called gold. This smallest possible unit of gold would be a gold atom. Thus, the atom is the limit of chemical subdivision for an element. The concept of an atom is an old one, dating back to ancient Greece. Records indicate that around 460 B.C., Democritus, a Greek philosopher, suggested that continued subdivision of matter ultimately would yield small indivisible particles which he called atoms (from the Greek word atomos meaning "uncut or indivisible"). Democritus's ideas about matter were, however, lost (forgotten) during the Middle Ages, as were the ideas of many other people. It was not until the beginning of the nineteenth century that the concept of the atom was "rediscovered". John Dalton (1776--1844), an English school teacher, proposed in a series of papers published in the period 1803--1807 that the fundamental building block for all kinds of matter was an atom. Dalton's proposal had as its basis experimentation that he and other scientists had conducted. This is in marked contrast to the early Greek concept of atoms, which was based solely on philosophical speculation (构想). Because of its experimental basis, Dalton's idea got wide attention and stimulated new work and thought concerning the ultimate building blocks of matter. Additional research, carried out by many scientists, has now validated (证明……有效) Dalton's basic conclusion that the building blocks for all types of matter are atomic in nature. Some of the details of Dalton's original proposals have had to be modified in the light of recent more sophisticated experiments, but the basic concept of atoms remains.

单选题His remarks left me ______ about his real purpose.

单选题She always speaks so fast that I can hardly ______ what she says.

单选题Most people tend to ______ a pounding heart and sweating palms with the experience of emotion.

单选题Generally speaking, China is now only at the beginning stage of producing its own fax machines. And the products can at best compete with the low-grade imported ones in the US market. Great efforts are needed to master and apply new and high technologies for the development of new famous brand fax models so as to win a greater market share.

单选题All the people who went to the new supermarket had one great hope: to be the lucky customer who did not have to pay for his shopping. For this was what the notice just inside the entrance promised. It said, "Remember, once a week, one of our customers gets free goods. This may be your lucky day!" For several weeks Mrs. White hoped, like many of her friends, to be the lucky customer. Unlike her friends, however, she never lost heart. Her kitchen was full of things which she did not really need. Her husband tried again and again to persuade her to give it up, but she just wouldn"t listen. She dreamed of the day when the manager of the supermarket would come up to say, "Madam, this is your lucky day. Everything in your basket today is free." One Friday morning, after she had finished her shopping and had taken it to her car, she found that she had forgotten to buy some tea. She rushed back to the supermarket, got the tea and went to the desk to pay for it. As she was walking, she saw the manager of the supermarket coming up. "Madam," he said warmly, holding out his hand, "I want to congratulate you! You are our lucky customer today. Everything you"ve got in your basket is free."