单选题It was no ______ that his car was seen near the bank at the time of the robbery.

单选题Friend A: Just call me dad! My wife and I had our first baby. Friend B:______.

单选题______ I love you, I cannot lend you any more money.

单选题The human body is composed of organs, each ______ a definite job to do.

单选题I sent him the package yesterday. He __ it by now.

单选题The Aleuts, residing on several islands of the Aleutian Chain, the Pribilof islands, and the Alaskan Peninsula, have possessed a written language since 1825, when the Russian missionary Ivan Veniaminov selected appropriate characters of the Cyrillic alphabet to represent Aleut speech sounds, recorded the main body of Aleut vocabulary, and formulated grammatical rules. The Czarist Russian conquest of the proud, independent sea hunters was so devastatingly thorough that tribal traditions, even tribal memories, were almost obliterated. The slaughter of the majority of an adult generation was sufficient to destroy the continuity of tribal knowledge, which was dependent upon oral transmission. As a consequence, the Aleuts developed a fanatical devotion to their language as their only cultural heritage. The Russian occupation placed a heavy linguistic burden on the Aleuts. Not only were they compelled to learn Russian to converse with their overseers and governors, but they had to learn Old Slavonic to take an active part in church services as well as to master the skill of reading and writing their own tongue. In 1867, when the United States purchased Alaska, the Aleuts were unable to break sharply with their immediate past and substitute English for any one of their three languages. To communicants of the Russian Orthodox Church a knowledge of Slavonic remained vital, as did Russian, the language in which one conversed with the clergy. The Aleuts came to regard English education as a device to wean them from their religious faith. The introduction of compulsory English schooling caused a minor renascence of Russian culture as the Aleut parents sought to counteract the influence of the schoolroom. The harsh life of the Russian colonial rule began to appear more happy and beautiful in retrospect. Regulations forbidding instruction in any language other than English increased its unpopularity, The superficial alphabetical resemblance of Russian and Aleut linked the two tongues so closely that every restriction against teaching Russian was interpreted as an attempt to eradicate the Aleut tongue. From the wording of many regulations, it appears that American administrators often had not the slightest idea that the Aleuts were clandestinely reading and writhing their own tongue or even had a written language of their own. To too many officials, anything in Cyrillic letters was Russian and something to be stamped out. Bitterness bred by abuses and the exploitations the Aleuts suffered from predatory American traders and adventurers kept alive the Aleut resentment against the language spoken by Americans. Gradually, despite the failure to emancipate the Aleuts from a sterile past by relating the Aleut and English languages more closely, the passage of years has assuaged the bitter misunderstandings and caused an orientation away from Russian toward English as their second language, but Aleut continues to be the language that molds their thought and expression.

单选题I managed to talk down the price and bought the coat ______ the discount of 20 percent. A. for B. with C. on D. at

单选题The news item about the air crash is followed by a detailed report made ______.

单选题(For) the grounds that fiction is not (objectively) true, there (are) those who (object) to it.

单选题Interviewer: Hi, Christopher, what do you do in your free time? ______ ? Christopher: Well, I have a lot of hobbies. I like to read, and I like to work on computers.

单选题 If this technique should be extended to other crop plants, the rate of production ______ in this area.

单选题In order to help the students get a better understanding of the new conception, the professor ______ it with many examples.

单选题Billy, a hard-working student, is fourteen years old and in the ninth grade. He has a part-time job that (21) him up every morning at five o' clock, when most people are still (22) asleep. He is a newspaper boy. Each morning, Billy leaves the house at 5:15 to go to the (23) where the newspapers always are. The newspapers were (24) to the comer by truck at midnight. He always takes a wagon to (25) them. In the winter it is still dark (26) he gets up every day, but during the rest of the year it is (27) . Billy' must send the newspapers to the houses of people on his (28) in all kinds of weather. He tries to put each paper on the po ch(门廊)where it will be (29) from wind and rain or snow. Sometimes his customers give him tips, (30) him very excited. Billy earns about$70 per month through hard (31) , and he is saving some of the money to go to (32) , where he has always been longing to go. Besides that, he (33) the rest of the earnings on records and clothes. Once a month, he has to collect the (34) at night since many of them work during the day. That is when he is (35) so that he is full of excitement. Luckily, he gets greatly supported by his family. Billy has seventy customers now, but he doesn' t feel happy about the number. He dreams that he will get as many customers as possible some day. If that, he might win a prize for being an outstanding newspaper boy. He wants to win a trip to Europe, but he will be happy if he wins a new bicycle.

单选题How many significant demographic changes ever occurred in the past one million years?

单选题Only (within) the past 200 years (scientists have) found (out what) fire (is).

单选题Tom: Shall we try Pizza Hut tonight?Rachel: Sure. ______

单选题 Man still has a lot to learn about the most powerful and complex part of his body—the brain. In ancient times men did not think that the brain was the center of mental activity. Aristotle, the philosopher of ancient Greece, thought that the mind was based in the heart. It was not until the 18th century that man realized that the whole of the brain was involved in the workings of the mind. During the 19th century scientists found that when certain parts of the brain were damaged, men lost the ability to do certain things. And so, people thought that each part of the brain controlled a different activity. But modern research has found that this is not so. It is not easy to say exactly what each part of the brain does. In the past 50 years there has been a great increase in the amount of research being done on the brain. Chemists and biologists have found that the way the brain works is far more complicated than they had thought. In fact many people believe that we are only now really starting to learn the truth about how the human brain works. The more scientists find out, the more questions they are unable to answer. For instance, chemists have found that over 100,000 chemical reactions take place in the brain every second. Mathematicians who have tried to use computers to copy the way the brain works have found that even using the latest electronic equipment they would have to build a computer which weighed over 10,000 kilos. Some recent research also suggests that we remember everything that happens to us. We may not be able to recall this information, but it is all stored in our brains. Scientists hope that if we can discover how the brain works, the better use we will be able to put it to. For example, how do we learn language? Some children learn to speak, read and write when they are very young compared to average children. But scientists are not sure why this happens. They are trying to find out whether there is something about the way we teach language to children which in fact prevents children from learning sooner.