[外语类试卷]大学英语六级模拟试卷671及答案与解析.doc
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1、大学英语六级模拟试卷 671 及答案与解析 一、 Part I Writing (30 minutes) 1 Directions: For this part, you are allowed 30 minutes to write a letter to apply for a position. You should write at least 150 words following the instructions given below: 假如你叫方小宇,你在北京青年报看到以下招聘广 告,请就此写一封求职信: 公司诚聘文秘一员,要求如下: 本科以上学历;有良好的沟通和协调能力;精通
2、英语和计算机者优先。 应聘者请将简历寄至:北京市中关村北路 108号紫光大厦人力资源部,邮编100081 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 attached to the passage. For questions 1-4, mark: Y (for YES) if the s
3、tatement 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 headache is a symptom, not a disease. A headache is rarely the symptom o
4、f 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 The vascular headache occurs when blood vessels in the head enlar
5、ge 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. Another theory is that they result from the blood vessels constrictin
6、g 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. Women are more easy to suffer migraines than are men, and a certai
7、n 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 may be triggered by a sharp reduction in caffeine intake or by all
8、ergies 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 by some patients). Cyclical, seasonal, or emotional factors may al
9、so 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. Paleness, sweating, and sensitivity to light may accompany the pai
10、n. 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 Vascular headaches are diagnosed by a careful review of the circums
11、tances 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 seem to react to certain foods or changes in eating and sleeping habi
12、ts. 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 already in progress usually consists of a drug therapy program chose
13、n 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 migraines in some patients. These drugs work in the body to block wha
14、t 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 that causes migraine. Muscle Contraction Headaches A muscle contract
15、ion 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 muscle contraction headache usually occurs after a specific event that
16、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 abnormalities in the eyes, neck, teeth, or jaws or by poor postur
17、e-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 neck. This constant, dull pain usually occurs on both sides of the h
18、ead. 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 be conducted to detect any emotional problems that may be contrib
19、uting 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 treat muscle contraction headaches. Also, antidepressant drugs may be
20、 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 sinuses(窦 ) and sinus infections are probably the chief cause of thi
21、s 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 sinuses and causes excess pressure un the surrounding tissues, le
22、ading 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 dull, constant painful headache. Anyone who experiences the abrupt on
23、set 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 tissue; and fever, which may enlarge the blood vessels, can also cau
24、se 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 by sneezing, coughing, bending over, or doing anything that incre
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- 外语类 试卷 大学 英语六级 模拟 671 答案 解析 DOC
