单选题The yellow river is ______ river in Chin

单选题It takes ______ very unusual mind to undertake ______ analysis of ______ obvious.

单选题Every means ______ tried but without much result.[A] is[B] are[C] has been[D] have been

单选题--Some young people today seem to believe in ______ more than fashion and pop music.--I agree. But they should seek after elegant taste. A. not B. nothing C. nobody D. none

单选题阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。 During the 9th century scientists found that when certain parts of the brain of a man were{{U}} (36) {{/U}} , he would lose the{{U}} (37) {{/U}} to do certain things. And so, people thought that each part of the brain does a different{{U}} (38) {{/U}} . But modern research has{{U}} (39) {{/U}} out that this is not so, for it is not{{U}} (40) {{/U}} to say{{U}} (41) {{/U}} what each part of the brain does. In the past fifty years there{{U}} (42) {{/U}} a great increase in the amount of research{{U}} (43) {{/U}} on the brain. Chemists and biologists have{{U}} (44) {{/U}} that the{{U}} (45) {{/U}} the brain works it is not so{{U}} (46) {{/U}} as people in general may think. Chemists tell us that 100,000 chemical changes{{U}} (47) {{/U}} in the brain every second. Some recent researches also{{U}} (48) {{/U}} that we can remember everything{{U}} (49) {{/U}} happens{{U}} (50) {{/U}} us. We{{U}} (51) {{/U}} not be able to recall (回忆) the things we've heard and seen, but it is all kept there in the storehouse of the human mind. Earlier scientists thought the power of one's brain got weaker as one grow{{U}} (52) {{/U}} . But it is now thought that is not{{U}} (53) {{/U}} . As long as the brain is{{U}} (54) {{/U}} {{U}}(55) {{/U}} exercise it keeps its ability. It has been proved that an old person who has{{U}} (56) {{/U}} been active in the mind has a{{U}} (57) {{/U}} mind than a young person who has only done{{U}} (58) {{/U}} work{{U}} (59) {{/U}} using much of his brain. It is now thought that the{{U}} (60) {{/U}} work we give our brains, the more work they are able to do.

单选题Howmucharetheoranges?

单选题How much______she looked without her glasses!

单选题If the Irish expect to enjoy the 5% of reduction at prices, they should ________.

单选题Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems and difficulties as if life should be easy. It seems to them that difficulties represent a special kind of suffering especially forced upon them or else upon their families, their class, or even their nations. What makes life difficult is that the process of facing and solving problems is a painful one. Problems, depending on their natures, cause us sadness or loneliness or regret or anger or fear. These are uncomfortable feelings, often as painful as any kind of physical pain. And since life causes endless serious problems, life is always difficult and is full of pain as well as joy. Yes, it is in this whole process of solving problems that life has its meaning. Problems are the serious tests that tell us success from failure. When we desire to encourage the growth of human spirit, we encourage the human ability to solve problems, just as in school we set problems for our children to resolve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin said, "Those things that hurt, instruct." It is for this reason that wise people learn not to fear but to welcome the pain of problems.

单选题There are stock markets (股票市场) in large cities in many countries. The stock exchange is a place where people can buy or sell shares of a factory or company. And each share means certain ownership of a factory or company. Different people go to stock markets. Some are rich, who want to get more money than they have. Others are not very rich, who buy stocks to try to become rich. Still others buy stocks as part of their plan to save money. Of course, investing (投资) money in the stock market is not the safest way to make money. No one can tell exactly whether the shares will be doing well. The factory or company may do badly. Then the stocks will go down, and the investors will lose money. The stock may go up or down for a number of untold reasons. Everyone wants the stock to go up, but sometimes even if a factory or company does a good job, the stock may still go down. No wonder going to the stock market is often compared to gambling (赌博). Factories and companies that need money are pleased that so many people are willing to "gamble". Indeed, the stock market is an attractive and complex part of the business world.

单选题—Did you have a good time at the party?—Yes. I appreciated ______ to your home.

单选题Museums have changed. They are no longer places that one "should" go to but now they are places to enjoy. At a science museum in Canada, you can feel your hair stand on end as harmless electricity passes through your body. At the Children's Museum in New York, you can play an African drum. There are no "Do Not Touch" signs in some other museums in the USA. More and more museum directors have realized that people learn best when they can become part of what they are seeing. In many science museums, the visitors are encouraged to touch, listen, operate and experiment so as to discover scientific rules for themselves. The purpose is not only to provide fun, but also help people feel at home in the world of science. If people don't understand science, they will be afraid of it; and if they are afraid of science, they will not make the best use of it. One cause of all these changes is the increase in wealth and spare time. Another cause is the growing number of young people in the population. Many of them are college students or college graduates. They see things in a new and different way. They want art that they can take part in. The same is true of science and history. The old museums have been changing and the government is encouraging the building of new and modern museums. In the United States and Canada, there are more than 6,000 museums, almost twice as many as there were 25 years ago.

单选题John thought I was blaming him, ______ in fact, I was blaming myself.[A] as[B] whether[C] unless[D] while

单选题—Has Maria arrived yet?—No, she ______ an hour ago.

单选题--Have you finished your report yet?--No, I' ll finish it in ______ ten minutes.

单选题It was ______ I met Mr Smith in London.

单选题Almost every family buys at least one copy of a newspaper every day. Some people subscribe (订阅) to as many as two or three newspapers. But why do people read newspapers? Five hundred years ago, news of important happenings—battles lost and won, kings or rulers overthrown (推翻) or killed—took months and even years to travel from one country to another. The news passed by word of mouth and was never accurate. Today we can read in our newspapers of important events that occur in far away countries on the same day they happen. Apart from supplying news from all over the world, newspapers give us a lot of other useful information. There are weather reports, radios, television and film guides, book reviews, stories and, of course, advertisements. The bigger ones are put in by large companies to bring attention to their products. They pay the newspapers thousands of dollars for the advertising space, but it is worth the money, for news of their products goes into almost every home in the country. For those who produce newspapers, advertisements are also very important. Money earned from advertisements makes it possible for them to sell their newspapers at a low price and still make a profit. Newspapers often have information on gardening, cooking and fashion as well as a small but very popular section on jokes and cartoons (漫画).

单选题Only after being asked several times ______ us the story of his strange life.[A] he could tell[B] then he told[C] did he tell[D] he began to tell