单选题4. —Who did you spend the holiday with? —______.

单选题 You ______ the truth

单选题1. The door was ______ and I could see who she was talking to.

单选题. I am not sure that I can draw an exact line between wit and humor (perhaps the distinction is so subtle that only those persons ean decide who have long white beards), but even an ignorant person may express an opinion in this matter. I am quite positive that humor is the more comfortable and livable quality. Humorous persons, if their gift is genuine and not a mere shine upon the surface, are always agreeable companions. They have pleasant mouths turned up at the corners, to which the great master of Marionettes has fixed the strings and he holds them in his nimblest fingers to twitch them at the slightest jest (笑话). But the mouth of a merely witty man is hard and sour until the moment of its discharge. Nor is the flash from a witty man always comforting, but a humorous man radiates a general pleasure. I admire wit, but I have no real liking for it; it has been too often employed against me, whereas humor is always an ally; it never points an impertinent (不礼貌的) finger into my defects. A wit's tongue, however, is as sharp as a donkey's stick—I may gallop the faster for its prodding (刺戳), but the touch behind is too persuasive for any comfort. Wit is a lean creature with a sharp inquiring nose, whereas humor has a kindly eye and a comfortable girth. Wit has a better voice in a solo, but humor comes into the chorus best. Wit keeps the season's fashions and is precise in the phrases and judgments of the day, but humor is concerned with homely eternal things.1. The author's attitude toward wit can most accurately be described as ______.

单选题 In the big cities

单选题. Researchers have found that REM (rapid eye movement) sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a person's sleep becomes, the longer the periods of rapid eye movement. There are physical charges in the body to show that a person has changed from NREM (non-rapid eye movement) to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.1. According to the passage, how often does REM sleep occur in one night? ______

单选题 Mr. Smith was a wealthy industrialist

单选题. A unique laboratory at the University of Chicago is busy only at night. It is a dream laboratory where researchers are 1 work studying dreamers. Their findings have 2 that everyone dreams from three to seven times a night, although in 3 life a person may remember 4 or only one of his dreams. While the subjects—usually students—sleep, special machines 5 their brain waves and eye movements 6 the body movements that 7 the end of a dream. Surprisingly, all subjects sleep 8 . Observers report that a person usually 9 before a dream. 10 the dream has started, his body 11 and his eye became more 12 , as if the curtain has 13 on a show. As soon as the machine 14 that the dream is over, a buzzer 15 the sleeper. He sits up, records his dream, and goes back to sleep—perhaps to dream some 16 . Researchers have found that 17 the dreamer is wakened immediately after his dream, he can usually 18 the entire dream. If he is 19 to sleep even five more minutes, his 20 of the dream will have faded.1.

单选题. A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains: the range of news from local crime to international politics, from sports to business to fashion to science, and the range of comment and special features (特写) as well, from editorial page to feature article and interviews to criticism of books, art, theater, and music. A newspaper is even more remarkable for the way one reads it: never completely, never straight through, but always by jumping from here to there, in and out, glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next. A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What bring this variety together in one place is its topicality (时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient (短暂的) value. For all these reasons, no two people really read the same paper: what each person does is to put together out of the pages of that day's paper, his own selection and sequence, his own newspaper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.1. A modern paper is remarkable for all the following except its ______.

单选题 The humorous story may be told to great length

单选题4. Our company is very ______ for the worker for they can get to the subway in five minutes.

单选题3.

单选题 For years

单选题. Archimedes was a famous Greek mathematician and scientist. He was born around 287 B. C. and he died in the year 212 B. C.. Archimedes is most well-known for one specific idea that he came up with. "Archimedes's Principle" states that a solid object which is immersed in a liquid is pushed up by a force which is equal to the weight of the water that the object moves. For example, if you put a piece of wood and a piece of gold the same size in water, only the wood will float. Both the wood and gold move the same amount of water, but the wood weighs less than this water, while the gold weighs more. It is believed that Archimedes discovered this principle when the king of Syracuse asked him to solve a problem. The king wanted to know if his crown was pure gold or a mixture of gold and silver. The king, of course, did not melt his crown to find out. The idea came to Archimedes as he lowered himself into his bath. He noticed how the water spilled out of the tub. He decided to use the same idea for the crown. He knew that a gold crown immersed in water would weigh more than one made of silver. The experiment was done and the goldsmith was proved guilty of trying to cheat the king.1. A good title for the selection is ______.

单选题 It seems that beauty and women are twins

单选题11. To achieve success, ______ I need is your help.

单选题 ______ my daughter reaches the age of eighteen

单选题5.

单选题. Suppose we built a robot (机器人) to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No. The robot would be using up energy at a time when it was not receiving any. So we would probably program it to cease its activity at night and to wake up at dawn the next morning. According to the evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into ; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent. The evolutionary theory accounts well for differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.1. The author uses the example of the robot in space exploration to tell us ______.

单选题5.