1、大学英语四级模拟试卷 747及答案与解析 一、 Part I Writing (30 minutes) 1 1. 目前，垃圾短信给人们的生活带来了许多的麻烦与困扰； 2. 这种现象产生的原因； 3. 如何解决这个问题。 My View on Spam Message 二、 Part II Reading Comprehension (Skimming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the
2、 questions attached to the passage. For questions 1-7, mark： Y (for YES) if the statement agrees with the information given in the passage; N (for NO) if the statement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 1 Weight Contro
3、l: The Power of Healthy Choices What Is a Healthy Weight for Me? This is a tough question to answer. Even though many people talk about weight, what really matters is how much of your body weight is fat. The body mass index (BMI) is an approximate measure of body fat. It is based on your height and
4、weight. A BMI between 19 and 25 is considered a normal amount of body fat. If someones BMI is 25 to 29.9, that person is said to be overweight. A person is said to be obese (过度肥胖的 ) if his or her BMI is 30 or higher. The higher your BMI is, the greater your risk for diseases such as diabetes, heart
5、disease, arthritis, and certain cancers is. Some Causes That Can Lead to Being Overweight Having weight problems in your family. Eating when youre lonely, sad, bored or stressed. Eating because you feel pressured by friends or family to eat. Using food for recreation, or eating just because food is
6、available. Taking medicine that makes you feel hungry. Having hormone problems that slow your metabolism (how fast your body burns calories). How Can I Lower My BMI? The best way to lower your BMI is to reduce the total number of calories you take in and to be more physically active.Long-term succes
7、s is not about finding the “right“ diet. Its about identifying your behaviours that have contributed to taking in more calories than your body needs. It is also about making a plan to develop healthier eating and physical activity habits. For example, you may eat when youre under stress rather than
8、when youre hungry. Choosing another activity to do when you feel stressed, such as taking a walk, may help you break the habit of eating at those times. Youre more likely to make changes in your habits if you set a specific goal for yourself. For example, instead of saying “Im going to lose 20 pound
9、s“, decide that youll be more active every other day of the week. Be specific about what kind of activity youll do and which days youll do it. Your new goal might be: “During my lunch hour on Mondays, Wednesdays and Fridays, Im going to walk for half an hour in the park.“ Once your new healthy behav
10、iour becomes a habit, you can move on to another goal. Why Is Physical Activity a Big Deal? Physical activity builds muscles, so even if you dont lose pounds, you will look and feel better when you are more active. Being active also reduces your risk of chronic diseases like heart disease and diabet
11、es, even if you are overweight. What Is the Best Kind of Activity? First, ask your family doctor if there is any kind of physical activity that you should not do. Being more physically active doesnt mean you need to have a formal or complicated exercise program. Remember that the best kind of activi
12、ty is the kind that youll keep doing. Whatever activity you choose, try to do it for at least 30 minutes per day on most days of the week. Aerobic exercises, such as swimming, walking or jogging, raise your heart rate and help burn calories. The longer you exercise, the more fat your body will burn.
13、 Walking can be very helpful even if you dont walk fast. Light weight training also has many health benefits. It helps add muscle mass to your body. Muscle burns calories faster than fat does. How Can I Change My Eating Habits? Change them one at a time. For example, start by training yourself to ea
14、t without doing anything else at the same time.Focus on enjoying the taste and smell of your food by eating more slowly. Dont watch TV, talk on the phone or drive a car while you eat. Healthy Habits Eat breakfast. Eat your biggest meal of the day at lunchtime. Begin meals with a low-fat salad, soup,
15、 broth or a glass of water. Eat more vegetables and whole grains at each meal. Drink fewer sugar-sweetened beverages (such as regular soda and fruit juice). If you drink more than one regular soda per day, replace one of them with a diet soda, water or skim milk. Limit your alcohol intake. Know what
16、 one serving looks like and stick to it. Eat slowly so your body has time to know when you are full. Be more active in your daily life. Replace some of the sugar in your diet with non-caloric sweeteners. Get support from family and friends. Support is very important for long-term success in adopting
17、 healthy habits. What Is So Bad About Foods That Are High in Fat and Added Sugar? Foods that are high in fat and added sugar have lots of calories. Fat has almost twice the calories of carbohydrates (碳水化合物 ) and proteins. Also, compared with calories that come from carbohydrates or proteins, calorie
18、s that come from fat are more easily used by your body to make body fat. The following are foods high in calories from fat and/or added sugar. Pastries, doughnuts, cakes, cookies, sweet rolls, pies Most crackers and chips Cheeses Cooking oils, margarine, butter, lard Cream, ice cream Hot dogs and lu
19、ncheon meats Regular soda and fruit-flavoured juices Why Is Skipping Meals Not Helpful? Though skipping meals may work for a while, it backfires in the long run. When you skip a meal, you are likely to get too hungry, and then you may eat too much at once. What Can I Do When My Friends or Family Mem
20、bers Pressure Me to Eat? Sometimes a direct explanation and a request for support are enough to get people to understand that youre trying to improve your health habits. If that doesnt work, telling them its your “doctors orders“ may do the trick. If not, you may have to avoid those people until you
21、 feel comfortable enough with your new habits to handle the pressure. Will Diet Drugs Help Me Lower My BMI? Used with a doctors supervision, certain medicines can help some people lower their BMI. However, they are not the secret to long-term weight loss. Eating a more healthy diet and being more ph
22、ysically active are the way to lose weight and keep it off. 2 Peoples BMI might be different because of the dissimilarity in height and weight. （ A） Y （ B） N （ C） NG 3 If ones parents have weight problem, he or she is likely to have weight problem, too. （ A） Y （ B） N （ C） NG 4 The only way to lower
23、ones BMI is to reduce the amount of food taken in. （ A） Y （ B） N （ C） NG 5 Since life is full of changes, the more general your goal is, the more good it will do to you. （ A） Y （ B） N （ C） NG 6 People are suggested climbing mountains to keep healthy. （ A） Y （ B） N （ C） NG 7 Whole wheat bread and fru
24、it-flavoured juice are considered as healthy food. （ A） Y （ B） N （ C） NG 8 This passage gives reasons for weight problems and suggestions to lower BMI. （ A） Y （ B） N （ C） NG 9 The calories that fat has are twice as much as those of _. 10 A direct explanation and _ may be helpful to get your goal und
25、erstood by your friends. 11 You can lose weight and keep it off by eating a more healthy diet and _. Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the
26、 conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. （ A） He cant explain some concepts of engineering. （ B） He regularly gives talks to high sc
27、hool students. （ C） He doesnt want the woman to postpone the talk. （ D） He hasnt finished preparing for his presentation. （ A） To be an architect. （ B） To go into the business. （ C） To be more interesting. （ D） To become an artist. （ A） Photocopy the book at Sands store. （ B） Go back to the school b
28、ookstore and look near the side. （ C） Go to the bookstore near the school. （ D） Go to the bookstore near the Sams. （ A） She rarely makes mistakes. （ B） Her boss is hard to work with. （ C） She always tells others what she thinks. （ D） She regretted having replaced the secretary. （ A） He is always lat
29、e on Friday. （ B） He is most forgetful on Friday. （ C） He is always behind on his work on Friday. （ D） He prefers Friday mornings to Monday mornings. （ A） Mary forgot about the seminar. （ B） Mary has been ill for several weeks. （ C） Mary wasnt able to attend the seminar. （ D） Mary hadnt planned to a
30、ttend the seminar. （ A） Dave will never listen. （ B） She doesnt know Dave. （ C） She thinks Dave is insane. （ D） She thinks Dave will listen one day. （ A） She may not be able to help the man. （ B） She will talk to Judy about the problem. （ C） She isnt sure if Judy can solve the problem. （ D） The man
31、should solve the problem by himself. （ A） He is looking for a job. （ B） He is looking for a house. （ C） He is looking for a roommate. （ D） He is looking for an agent. （ A） A roommate who does not snore. （ B） A roommate who does not smoke. （ C） A roommate who is very tidy. （ D） A roommate who loves s
32、tudying. （ A） Help do housework. （ B） Bargain with the landlord. （ C） Agree to share with others. （ D） Sign an agreement. （ A） Steak. （ B） Chicken. （ C） Fish. （ D） Seafood. （ A） He got a promotion. （ B） He got engaged. （ C） He got married. （ D） He cooked dinner. （ A） At the office. （ B） At school. （
33、 C） At university. （ D） In the park. （ A） If he can cook her dinner. （ B） For a promotion. （ C） To marry him. （ D） For some more money. Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions
34、will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. （ A） Most children do not really study at the age of five when they enter kindergarten. （ B） Most Americans do not start to school at the age of five when they enter kinde
35、rgarten. （ C） Most Americans attend at kindergarten at the age of five for the whole day except weekends. （ D） Most Americans go to elementary school at the age of five. （ A） Six years. （ B） Eight years. （ C） Twelve years. （ D） Four years. （ A） A computer specialist. （ B） A scientist. （ C） A televis
36、ion announcer. （ D） A teacher. （ A） Pleased. （ B） Surprised. （ C） Satisfied. （ D） Worried. （ A） A sparkling party. （ B） Host mastery. （ C） A successful host. （ D） Rules to remember. （ A） Keeping the same seats with familiar faces will be fun for everyone. （ B） Careful attention to details is the who
37、le of the recipe to be a successful host. （ C） Newcomers at the party are often engaging and stimulating. （ D） Bringing in new faces to the party offers your guests the chance of discovery. （ A） Either men or women are always introduced to the newcomer. （ B） Girls over eighteen are introduced to old
38、er people. （ C） A man is introduced to a woman if she is over eighteen. （ D） The young are introduced to the old if they are of different sexes. （ A） Age. （ B） Interests. （ C） Personality. （ D） Conversational abilities. Section C Directions: In this section, you will hear a passage three times. When
39、 the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill
40、in the missing information. For these blanks, you can either use the exact words you have just heard or write down the 34 Recent studies have identified four major global environmental risks:【 B1】_rain, ozone depletion,【 B2】 _ and the greenhouse effect. On the whole, thanks to technological changes,
41、 people now【 B3】 _to move toward warmer regions in North America and Europe. Climate warming will probably be a【 B4】_to Alaska, which is Americas【 B5】 _ productive state in Gross National Product (GNP) per square mile. Studies of the【 B6】 _of global warming on the United States and other developed r
42、egions find that the most vulnerable areas are those【 B7】 _on undamaged ecosystems - on naturally【 B8】 _rainfall, run-off and temperatures, and the extreme of these variables. Agriculture, forestry and coastal activities fall into this category. 【 B9】 _. Intensive-care units pf hospitals, communicat
43、ions, heavy manufacturing and microelectronics are among the sectors likely to be unaffected by climate change. In selecting whether to set up in, say , Hong Kong or in Warsaw, few businesses will consider temperature a weighty factor. 【 B10】 _ About 3% of American GNP originates in climate-sensitiv
44、e sectors such as farming and forestry. Another 10% comes from sectors only modestly sensitive - energy, water systems, property and construction.【 B11】 _. 35 【 B1】 36 【 B2】 37 【 B3】 38 【 B4】 39 【 B5】 40 【 B6】 41 【 B7】 42 【 B8】 43 【 B9】 44 【 B10】 45 【 B11】 Section A Directions: In this section, ther
45、e is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter
46、 for each item with a single line through the center. You may not use any of the words in the bank more than once. 45 Each USDA beef grade is a measure of a distinct level of quality. Because beef can vary so much in 【 S1】 _ , it takes eight grades to span the range. The three lowest grades are seld
47、om sold as retail cuts since they go 【 S2】 _ into ground beef or into processed meat items such as hot dogs. The grade most widely sold is USDA Choice. It is 【 S3】 _ in great volume and retailers have found that this level of quality pleases most of their customers. Some stores, however, offer two g
48、rades so that their 【 S4】 _ may have a choice of quality and price. Standard grade beef has a high 【 S5】 _ of lean meat and very little fat. Because it comes from young 【 S6】 _ , beef of this grade is fairly tender; but because it lacks marbling, it is mild in flavor and is dry unless prepared with
49、moist heat. Commercial grade beef is produced only from mature animals; the top four grades are restricted to young animals. It has abundant marbling and has the rich, full flavor characteristic of mature beef. 【 S7】 _ Commercial grade beef requires long, slow cooking with moist heat to make it 【 S8】 _ . When prepared in this manner, it can provide delicious and economical meat dishes. Regardless of their quality
