大学英语第三册unit2试题.docx

Part 1 Word Dictation(每小题：1 分)Directions: Listen and write down the words you hear. You are going to listen to the recording twice. During the first time, write the word that you hear. Check your answers as you listen the second time...9.10.Part 2 Understanding Short Conversations(每小题：1 分)Directions: In this section youll hear some short conversations. Listen carefully and choose the best answer to the questions you hear.1.A. He started a new program.B. He stopped exercising.C. He feels very tired.D. He was ill last month.2.A. Bill took drugs.B. Bill exercised a lot.C. Bill grew new muscles.D. Bill had a new coach.3.A. Healthy vegetables are very expensive for some people.B. The woman doesnt have a good excuse not to exercise.C. Running outside is the best way for a person to exercise.D. Healthy living isnt something to make excuses for.4.A. 60%.B. 30%.C. 70%.D. 50%.5.A. Mother and son.B. Brother and sister.C. Father and daughter.D. Husband and wife.Part 3 Understanding Long Conversations(每小题：1 分)Directions: In this section youll hear a long conversation or conversations. Listen carefully and choose the best answer to the questions you hear.Questions 1 to 5 are based on the same passage or dialog.1.A. Boyfriend and girlfriend.B. Husband and wife.C. Father and daughter.D. Mother and son.2.A. Find girlfriends easily.B. Talk to the woman quite often.C. Exercise according to a program.D. Sing the songAll You Need is Love.3.A. Hes always feeling sorry for himself.B. Hes too fat to be attractive for girls.C. Hes always too busy exercising.D. He wont go anywhere with a girlfriend.4.A. Finding love.B. Losing weight.C. Exercising.D. Working.5.A. Finding love is not as important as losing weight.B. Feeling sorry for yourself will not help you find love.C. Being thin and exercising are important in finding love.D. Getting a girlfriend is impossible for fat people.Part 4 Cloze (with four choices provided)(每小题：1 分)Directions: Read the following passage carefully and choose the best answer from the four choices given for each blank.Questions 1 to 20 are based on the following passage.Tai chi movements are slow and smooth, designed for stretching, breathing, and thinking. Exercises are in a set routine of1.movements. Attention is paid per space between the body parts. These movements3.and balance your internal energy. Those who4.Tai chi have their own ideas about health. They believe that your internal energy is5.for the healthy functioning of your body.6., daily practice of Tai chi has other benefits. It7.your body both mentally and physically. It also8.you in your bodys natural healing.These exercises may not be as9.to watch as basketball. It may not even be as much fun as baseball, one Tai chi instructor10. No one is going to be too impressed when you tell them its11.you several years to learn a simple arm movement. There is nothing interesting to see,12.thats because most of what goes on is inside of the body. The muscles are13.and the blood is pumping.If Tai chi has a14.it is knee problems. Physicians in the United States15.according to their studies that knee problems are common. They say that over 40% of Americans who practice Tai blems with their knees.17.this only happens in the United States. The American lifestyle might be the cause. American life does not include a18.amount of walking. Chinese doctors say this could be the source of blem. Knee problems20.practicing Tai chi are almost unheard of in China, where people walk a great deal.Part 5 Skimming and Scanning (Multiple Choice + Blank Filling)(每小题：2 分)Directions: Read the following passage and then answer the questions. For questions 1-7, choose the best answer from the four choices marked A, B, C and D. For questions 8-10, complete the sentences with the information given in the passage.Questions 1 to 10 are based on the same passage or dialog.Engineers of the WoodsIn the forests of North America, where the winters are often long and cold, small lakes can be found along the streams. Sometimes these lakes are natural, sometimes they are man-made, and sometimes they are the constructions of beavers (海狸). You can tell a beaver lake by its dam. To make the dams, the beavers lay sticks and branches on top of each other to form an effective barrier against the water of the stream. Near the dam the beavers lay sticks and branches. Usually this barrier is similar to a small island in a lake. This is the house where a beaver family spends the winter, protecting themselves from enemies and from the cold. The beavers are able to keep dry in the center of the house, which is above water level.The beavers work hard to make their house.They cut down trees, gather branches and put them together with mud. Most of the summer is spent on this kind of work, but in winter the beavers work pays off. Their house protects them from bears as well as the cold.The beaver is related to animals such as rats and mice.The beaver, however, is much bigger than his relatives. An adult beaver may weigh more than 50 pounds, and his body may be about three feet long. His tail will add ten to twelve more inches to his length. His back feet are webbed, which help him swim rapidly. His front feet are similar to a pair of strong hands. With them he can carry wood and stones. His eyes, nose and ears are small, but he has two huge front teeth. These teeth are always growing, and he must keep them sharp by constant use. The teeth of an adult beaver are yellow from the bark of trees that he bites.Men attach great value to the beaver because beavers can be sold to make expensive clothing.Beavers have almost disappeared from Europe because trappers (设阱捕兽者) have killed so many of them. Beavers might easily have become extinct in America, too, but laws were passed to protect them before they were all killed.The beaver likes family life, and lives with the same mate all his life.Several youngusually two to fiveare born every year. The little beavers stay with their parents for two years before mating and setting out on their own. They share the work of building dams, constructing homes and raising the young.When there are too many beavers in one place, some of them will group together in another place. They usually choose a spot near some fairly deep lake or river, where there are trees. The bark of trees is eaten as food. Then the wood is used for building.Sometimes the lodges are built on the bank of the water, but usually they are built on an island in the water.If there is no island already there, the beavers make one by piling sticks and mud on the bed of the river until the top is a few inches above the level of the water. The top is carpeted with small pieces of wood leaves. A roof of sticks and lots of mud is then built over this floor. Food for the winter is taken to the lodge before the weather gets too cold. Some of itthe larger piecesis stored on the bottom of the lake or river, near the entrance to a tunnel leading up to the lodge. There are sometimes several such entrances, under the surface of the water. Wood that is kept under water may be stuck in the mud, or weighted down with stones.Beavers prefer to work at night.One beaver, on a single night, can cut down a tree that is eight inches around. After cutting down the tree, the beaver cuts the trunk into pieces that can be carried. He uses these as the base for the dam. A small dam may be enlarged after several years, in order to flood a large surface and provide living space for more beavers. Under favorable conditions, a dam may last for a hundred years or more. Naturally, other animals use these dams as bridges, forcing the beavers to keep the dams in good repair. The dams must be strong enough to hold up against the pressure of ice in spring and sometimes, holes are made by the beavers, after heavy rains, to allow excess water to run off.Another type of work beavers do is canal digging.When they have used up the good trees near their home, they must bring more wood from farther away. To accomplish this, they may dig a canal (运河) to float the trees to the place where they are needed.Beaver dams help people because they prevent floods and bring water to farms. It is fortunate that these animals have not been allowed to disappear completely.1.The stick and branch dams made by beavers are similar to _.A. houses where people spend the winterB. small islands in a lakeC. barriers against the water of the streamD. dams that are man-made2.Beavers spend most of the summer _.A. hiding from bearsB. making their houseC. keeping coldD. looking for mice and rats3.To help it swim quickly, a beaver has _.A. small earsB. strong front feetC. a long tailD. webbed back feet4._ have (has) protected beavers from becoming extinct.A. Family lifeB. EuropeC. LawsD. Trappers5.Beavers usually choose to live _.A. in one placeB. near some deep lakes or rivers with foodC. near some deep lakes or rivers with treesD. near the dams of rivers6.On the bottom of the lake or river, beavers store _.A. large pieces of foodB. small pieces of wood leavesC. wood and stonesD. sticks and lots of mud7.In only one night, a beaver can _.A. build a small damB. cut down a treeC. repair a damD. make more living space8.After heavy rains, beavers make holes in the dam to let excess water.9.Beavers dig canals tofrom the places farther away to the places where they are needed.10.Preventing floods and bringing water to farms are two ways that beaver dams.Part 6 Reading Comprehension (Multiple Choice)(每小题：2 分)Directions: Read the following passages carefully and choose the best answer from the four choices marked A, B, C and D.Questions 1 to 5 are based on the same passage or dialog.Summer is the ideal time of year for one of my favorite outdoor activities, hiking (徒步旅行). It is much more than just a great workout. You get to be outside of the confines of a gym and be together with nature. You breathe in the fresh, clean air while the city life you endured all week just fades away. You are suddenly transported somewhere else. You are suddenly in a place where you can appreciate the untouched, simplistic beauty of nature. The trees are green, the wild flowers are growing and the woods are filled with activity. Once you experience it, youre hooked.Whether hiking in the deserts of Arizona or the mountains of Alberta, you suddenly realize you are not alone and there is something much bigger at work. There is a realization that life is precious and you think deeply about your life.Another wonderful part of hiking is that you can participate at any level and it is, for the most part, free. It is a great way to escape the rat race, even during the week. If you have any problems you need to solve, hiking is really good for clearing your head and removing stress.If hiking sounds intimidating to you, it is essentially walking on a whole new level. Experts have spoken about the benefits of walking for years. Walking doesnt stress your legs as much as running and countless studies agree walking leads to weight loss and better health. It is good for your heart, reduces illness and has even been shown to enhance your thinking. So why wouldnt you want to do it?1.What makes hiking different from other forms of exercise?A. It is a great workout.B. It is a summertime activity.C. It is an activity that slows breathing.D. It is an exercise that is done outside.2.What disappears for someone who is hiking?A. Green trees.B. Beautiful nature.C. City life.D. Precious things.3.Once you take up hiking in nature as something you do, you _.A. feel much bigger than beforeB. love it and want to do it oftenC. wish you lived outside of the cityD. look for new hiking places, like Arizona4.How do you feel after youve begun hiking?A. Intimidated.B. Thoughtful.C. Lonely.D. Free from stress.5.How is running different than walking?A. Running is harder on the legs.B. Running is better for weight loss.C. Running is good for a persons heart.D. Running is a cause for improved thinking.Questions 6 to 10 are based on the same passage or dialog.Another example of the dangers of a restricted diet may be seen in the disease known as beri-beri (脚气病), which used to affect large numbers of Eastern peoples who lived mainly on rice. In the early years of the 20th century, a Dutch scientist named Eijkman was trying to discover the cause of beri-beri. At first he thought it was transmitted (传送) by a germ (细菌). He was working in a Japanese hospital, where the patients were fed on rice which had had the external husk (壳) removed from the grain, called white rice. It was thought this would be easier for weak, sick people to digest.Eijkman thought his germ theory was confirmed when he noticed the chickens in the hospital yard, which were fed on scraps (碎片) from the patients plates, were also showing signs of the disease. He then tried to isolate the germ he thought was causing the disease, but his experiments were interrupted by a hospital official, who ruled that the huskless polished rice was too good for chickens. The chickens should be fed cheap rice with the external covering still on the grain, called brown rice.Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating brown rice somehow prevented or cured beri-berieven that a lack of some ingredient in the husk might be the cause of the disease. Indeed this was the case. The element needed to prevent beri-beri was shortly afterwards isolated from rice husks and is now known as Vitamin B. The white rice, though more expensive, was keeping alive the disease the hospital was trying to cure.6.From the context, what do you think the author mentions in the paragraph that is just before this first paragraph?A. One example of the importance of vitamins.B. One example of the benefits of eating healthy foods.C. One example of the dangers of a restricted diet.D. One example of the benefits of various vitamins.7.The disease beri-beri _.A. kills large numbers of Western peoplesB. is a vitamin deficiency diseaseC. is transmitted by diseased riceD. can be caught from diseased chickens8.The chickens Eijkman noticed in the hospital yard _.A. couldnt digest the huskless riceB. proved beri-beri is transmitted by germsC. were later cooked for the patients foodD. were suffering from vitamin deficiency9.Huskless, white rice _.A. was cheaper than brown riceB. was less beneficial to the body than brown riceC. was more beneficial to the body than brown riceD. cured beri-beri10.The ingredient missing from white rice _.A. was Vitamin BB. did not affect the chickensC. was named the Eijkman vitaminD. has never been accurately identifiedQuestions 11 to 15 are based on the same passage or dialog.A strict vegetarian is a person who never in his life eats anything derived from animals. The main objection to vegetarianism (素食主义) on a long-term basis is the difficulty of getting enough proteinthe body-building element in food. If you have ever been without meat or other animal foods for some days or weeks (say, for religious reasons) you will have noticed that you tend to get rather weak physically. You are glad when the fast (禁食) is over and you get your reward of a delicious meat meal.Proteins are built up from about twenty food elements called amino acids (氨基酸), which are found in greater amounts in animal protein than in vegetable protein. This means you have to eat a great deal more vegetable than animal food in order to get enough of these amino acids. A great deal of the vegetable food goes to waste in this process and from the physiological (生理学的) point of view there is not much to be said in favor of life-long vegetarianism.The economic side of the question, though, must be considered. Vegetable food is much cheaper than animal food. However, since only a small proportion of the vegetable protein is useful for body-building purposes, a consistent vegetarian, if he is to gain the necessary 70 grams (克) of protein a day, has to consume a greater bulk of food than his digestive organs can comfortably deal with. In fairness, though, it must be pointed out that vegetarians claim they need far less than 70 grams of protein a day.11.A strict vegetarian _.A. rarely eats animal productsB. sometimes eats eggsC. never eats any animal productsD. never eats protein12.We feel weak when we go without meat and other animal products _.A. because we are reducing our food amountB. because we do not get enough proteinC. because vegetables do not contain proteinD. unless we take plenty of exercise13.Proteins are built up from _.A. about twenty different foodsB. about twenty different vegetablesC. various fats and sugarsD. about twenty different amino acids14.