1、大学英语六级模拟试卷 77 及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are allowed 30 minutes to write a composition on the topic What Are College Students Doing on the Internet? You should write at least 150 words according to the outline given below in Chinese: 1据统计，在网上聊天交友、玩网络游戏是目前我国大学生上网的主要活动内
2、容 2专家认为，那些沉迷于聊天和游戏的大学生，不仅耗费了金钱、时间和精力，还影响了正常的学业和人际交往 3我们应当如何看待大学生上网的问题 What Are College Students Doing on the Internet? 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 questions atta
3、ched to the passage. For questions 1-4, 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. 2 Headaches Explained A headac
4、he is a symptom, not a disease. A headache is rarely the symptom of a serious illness, but severe or frequent headaches can be exhausting and can affect daily life. There are three basic types of headaches: vascular headache, muscle contraction headache, and inflammatory headache. Vascular headaches
5、 The vascular headache occurs when blood vessels in the head enlarge and press on nerves, causing pain. The most common vascular headache is the migraine(偏头痛 ). One theory about migraine headaches is that they occur when the blood vessels in the head expand and press on the nerves, causing pain. Ano
6、ther theory is that they result from the blood vessels constricting and thus blocking blood flow to parts of the brain; this may cause the visual suffering that often accompany or precede a migraine headache. The blood vessels then become full of blood and press on surrounding nerves, causing pain.
7、Women are more easy to suffer migraines than are men, and a certain personality type compulsive, perfectionist, and very success oriented seems to be more likely to be affected with migraine headaches. Causes A number of physical and emotional factors may contribute to migraine headaches. Migraines
8、may be triggered by a sharp reduction in caffeine intake or by allergies to certain foods. Emotional stress can also cause migraine headaches, as can drinking alcohol, smoking, or an interruption in routine eating and sleeping habits (all of which may be responsible for “weekend“ headaches suffered
9、by some patients). Cyclical, seasonal, or emotional factors may also be associated with the tendency to develop migraine headaches. A tendency to develop this type of headache may be inherited. Symptoms The predominant symptom of a migraine headache is a sharp pain on one or both sides of the head.
10、Paleness, sweating, and sensitivity to light may accompany the pain. A warning sensation may indicate an approaching migraine headache. Before the pain begins, some individuals may see flashing lights or “shooting stars“, hear noises, or have an uncomfortable feeling in the arms or legs. Diagnosis V
11、ascular headaches are diagnosed by a careful review of the circumstances surrounding the headaches as well as by a physical examination to rule out any other disorder that might be causing the symptoms. Elimination tests may be done to identify the exact cause of migraines suffered by people who see
12、m to react to certain foods or changes in eating and sleeping habits. In an elimination test, all the substances that are suspected of causing the trouble are eliminated and then reintroduced one at a time to identify the specific cause of the migraine headaches. Treatment Treatment of a migraine al
13、ready in progress usually consists of a drug therapy program chosen from a variety of painkillers, tranquilizers, and special prescribed medications. Prevention Prevention of migraines is possible with several types of medication. Antidepressant drugs and beta-blockers have been shown to prevent mig
14、raines in some patients. These drugs work in the body to block what are called the beta effects, one of which is expansion of the blood vessels. While it is not yet known exactly how these drugs provide relief research suggests that they act by preventing the initial constriction of blood vessels th
15、at causes migraine. Muscle Contraction Headaches A muscle contraction headache occurs when muscles of the face, neck, or scalp remain tightened for long periods of time. These muscles are then said to be in spasm(痉挛 ). A tension headache is an example of a muscle contraction headache. Causes A muscl
16、e contraction headache usually occurs after a specific event that has caused the muscles to tense. The tension is then translated into physical discomfort in the form of a clenched jaw, aching neck, and tightened muscles of the face and head. Muscle contraction headaches can also be brought about by
17、 abnormalities in the eyes, neck, teeth, or jaws or by poor posture-especially by holding the head at an awkward angle while reading, driving, or watching television. Symptoms The major symptom of these headaches is a tight, squeezing pain in the forehead or jaws or around the back of the head or ne
18、ck. This constant, dull pain usually occurs on both sides of the head. Diagnosis Diagnostic evaluation involves a review of the events that usually precede the headaches, as well as a physical examination to rule out any other disorder that might he causing them. A psychological examination may also
19、 be conducted to detect any emotional problems that may be contributing to the headaches. Treatment Treatment usually begins with eliminating the tension or correcting the physical problem that is causing the headaches. Painkillers, muscle relaxants, and-tranquilizers may occasionally be used to tre
20、at muscle contraction headaches. Also, antidepressant drugs may be effective in preventing the headaches in those individuals who suffer from them regularly. Inflammatory Headaches An inflammatory headache is caused by pressure within the head, due to any of a variety of disorders. Causes Clogged si
21、nuses(窦 ) and sinus infections are probably the chief cause of this type of headache. The sinuses are the cavities within the facial bones. When mucus(粘液 ), which normally flows freely through the sinuses and drains down the nasopharynx(鼻咽 ) or out the nose, cannot drain properly, it collects in the
22、 sinuses and causes excess pressure un the surrounding tissues, leading to headache. Other causes of inflammatory headaches include a brain tumor. Brain tumors are usually associated with swelling in the surrounding tissues, which may cause increased pressure within the skull and, as a result, a dul
23、l, constant painful headache. Anyone who experiences the abrupt onset of a severe headache or “the worst headache of my life“ should seek medical evaluation immediately. High blood pressure, which causes blood to rush through the vessels with too great a force; infectious, which inflame sensitive ti
24、ssue; and fever, which may enlarge the blood vessels, can also cause headache due to excess pressure within the skull. Symptoms The symptoms of an inflammatory headache are a dull, aching pain, often occurring early in the day, accompanied by a feeling of pressure in the head. The pain is heightened
25、 by sneezing, coughing, bending over, or doing anything that increases the amount of blood in the head. Diagnosis This type of headache is diagnosed by determining first whether sinus problems are causing it. If not,the doctor may order an electroencephalogram(EEG), which is a visual record of elect
26、rical activity in the brain; X-ray studies; a computed tomographic(CT) scan, which provides a cross-sectional picture of the brain; or a magnetic resonance imaging(MRI) study, which yields images comparable to those obtained with CT but without the use of X-rays. These tests can detect the presence
27、of a tumor, or other abnormality in: the brain that may be responsible for causing the headache. Treatment Inflammatory headaches are treated according to their causes those triggered by a sinus infection can be treated with painkillers, antibiotics to fight the infection. Headaches resulting from m
28、ore serious disorders, such as a brain tumor, will almost certainly require further evaluation and treatment. Prevention Prevention of these headaches is sometimes possible if the cause is as simple as a sinus infection. For example, if you suffer from frequent sinus headaches, you should stop smoki
29、ng. Smokers seem particularly prone to sinus infections. The inflammatory headache is some whit different from the migraine and muscle contraction types, but all three obviously have this in common: They can be extremely painful. 2 Because a headache is not a disease, it will not cause serious influ
30、ence on our daily life. （ A） Y （ B） N （ C） NG 3 Both the expansion and constriction of blood vessels are the possible cause of a vascular headache. （ A） Y （ B） N （ C） NG 4 Taking enough caffeine can help to relieve the pain when you are suffering a migraine headache. （ A） Y （ B） N （ C） NG 5 Some peo
31、ple suffer headaches on weekends because their usual eating and sleeping habits formed during the week are suddenly broken. （ A） Y （ B） N （ C） NG 6 The drugs used to prevent migraines can block the_ effects, which may cause the blood vessels to expand. 7 You may suffer a muscle contraction headache
32、if you read for a long time with _. 8 In order to cure muscle contraction headaches, firstly doctors will get rid of the _ of the patient which is the cause of the suffering. 9 Inflammatory headaches will occur when mucus cannot flow freely through the sinuses and causes too much stress on _. 10 Sne
33、ezing will intensify the symptom of inflammatory headaches because it will enlarge _. 11 Smokers are easy to suffer from inflammatory headaches because smoking can cause _. Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each convers
34、ation, one or more questions will be asked about what was said. Both the 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） The man had be
35、tter stop taking the cough medicine. （ B） The man will take another medicine instead of this. （ C） The man should have patience to cure his cough. （ D） The man should take the medicine for a long time. （ A） She cannot finish her work. （ B） She will date her friend on the evening of 28th April. （ C）
36、She wants to avoid the crowd in the Huangshan resort. （ D） She will have an important visitor. （ A） They are boiling a cup of water. （ B） They are stirring a cup of mud. （ C） They are cooking sweet and sour rice. （ D） They are writing down the recipe. （ A） She has half finished filling out the form.
37、 （ B） She doesnt remember to fill out the form. （ C） She is glad that the man might help her. （ D） She feels frustrated about filling out the form. （ A） He went mountain climbing last year. （ B） He hasnt traveled around the world yet. （ C） Hes always wanted to climb that mountain. （ D） He definitely
38、 does not want to go. （ A） They had better finish the project as soon as possible. （ B） They had better try their luck to finish the project, （ C） They are so lucky to have the project being put off. （ D） They had better have a risk to extend the project. （ A） The woman is examining some old houses.
39、 （ B） The woman is going to rent the house. （ C） The woman is discussing the house condition with her colleagues. （ D） The woman is telling the man to change the wiring. （ A） She thinks her pay for the job is too tow. （ B） She believes she should be promoted as a manager. （ C） She thinks her job can
40、not make full use of her abilities. （ D） She thinks what her learned is useless. （ A） The woman asked the man to help her apply for a job. （ B） The woman asked the man to read her graduate school application. （ C） The women asked the man to help her with her homework. （ D） The women asked the man to
41、 prepare a presentation for her. （ A） Geology. （ B） Music. （ C） Medical. （ D） Mathematics. （ A） Divide the information into separate paragraphs. （ B） Expand the ideas and make it fancy. （ C） Add all of the womans personal information. （ D） Pay attention to the presentation formats. （ A） Eliminating
42、the original vegetation from the building site. （ B） Making the houses in an area similar to one another. （ C） Deciding where a house will be built. （ D） Surrounding a building with wildflowers and plants. （ A） They are changed to make the site more interesting. （ B） They are expanded to limit the a
43、mount of construction. （ C） They are integrated into the design of the building. （ D） They are removed for construction. （ A） Because many architects studied with Wright. （ B） Because Wright started the practice of landscape integrating. （ C） Because Wright used elements of envelope building. （ D） B
44、ecause most of the houses Wright built were made of stone. （ A） Architects should scrap or clean the original landscape elements. （ B） Architects should incorporate the features of the original landscape. （ C） Architects may refer to many architecture books. （ D） Architects have to learn more techni
45、ques. 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 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. （
46、 A） Gender roles and specialization. （ B） Social status and age. （ C） Where and when the meal is provided. （ D） The kinds of meals. （ A） Females and the younger. （ B） Elders and females. （ C） Males and the younger. （ D） Elders and males. （ A） Nowadays families dont often eat formal meals together. （
47、 B） Most people dont like to eat out. （ C） People eat out because females nowadays dont cook. （ D） Proper etiquette is not needed on formal occasions. （ A） In some European countries. （ B） In some African countries. （ C） In some Asian countries. （ D） In some American counties. （ A） Because he is thi
48、rsty. （ B） Because he loves drinking. （ C） Because it is good manners. （ D） Because he has not had enough. （ A） Being kind and helping others. （ B） Taking off your shoes before entering a house. （ C） Never finishing a drink. （ D） Pushing to the front of the queue in the post office. （ A） A public sp
49、eech. （ B） A test at school. （ C） A persuasive speech. （ D） A conversation to a stranger. （ A） Watching the advertisement of the company on TV. （ B） Consulting people who work in the company. （ C） Asking their friends to find out the information. （ D） Looking them up in reference books and periodicals. （ A） The way the interviewee speaks. （ B） The interviewees appearance. （ C） The color of dress the interviewee is in. （ D） The interviewees hairstyle. （ A） You should have long hair. （ B） You should be in casua
