health.docx

1、healthDirections: Read the following passage, and then answer the questions by choosing the best answer from the four choices marked ABCD.Become Healthier with Green TeaThe green tea is one of the most popular beverages around the world. It is adored in Asian countries and it started to take western

2、 tea lovers several years ago. How can it be healthy for you? Or should you avoid it? Each of us is unique, but a green tea has a lot of advantages that might be useful for you. Dont miss a chance to live healthier.Chinese people even have a proverb about treating powers of the green tea, saying tha

3、t its better to have a cup of green tea than to take a medicine. Why? Its because of healthy components hiding in this drink.Green tea contains antioxidants ( 抗氧化剂) that can improve your health in several ways. First of all, they can slower aging process because they fight free radicals that are pro

4、duced by human body all the time. Free radicals damage cells and might cause some illness. Its a natural process and it cant be stopped, but it can be slowed.Green tea increases bodys immune system by fighting certain bacteria. When brewed, it can neutralize chloramines (氯胺) in water. Some doctors r

5、ecommend green tea as a treatment for diarrhea. Adding green tea to your diet might help you to improve circulation of the blood and reduce a risk of heart diseases. Drinking green tea regularly helps to lower blood sugar. Catechins found in green tea makes great influence to chemicals that causes h

6、igh blood pressure.Scientists learned that cancer diseases were much rarer in those Japanese regions that consume much more green tea comparing to other regions. This connection is under investigations, but some of the preventing features have already been proven. Medics agree that green tea extract

7、 can facilitate state for patients of chronic lymphocytic leukaemia (淋巴细胞性白血病).Green tea contains caffeine that refreshes and awakes one. Caffeine amount in a green tea is not as significant as in black tea or coffee, but because of other green tea ingredients, caffeine is absorbed slowly and has di

8、fferent effect. Furthermore, green tea is healthier than coffee, because coffee makes body to dehydrated.Scientists confirmed that green tea significantly increases fat burning. If you are on a plan to lose some weight, its recommended to drink green tea daily to accelerate the process and keep you

9、brisk.However, green tea is not a cure for all diseases and even can cause some health disorders, especially when consumed too often. How to take all the advantages of green tea? The secret is in proper brewing. Do not brew green tea with boiled water but wait till its a bit colder. Vitamins and oth

10、er useful materials can be damaged in high temperatures. Remove tea leaves or tea bag 2-5 minutes after brewing for the best taste. The water takes all the useful materials from tea leaves in this period; it can turn bitter if you dont filter tea off five minutes after brewing.1. The green tea is on

11、e of .A. the most popular beverages in Asian countriesB. the most popular drinks in the worldC. the most popular drinking water in western countriesD. the most popular tea in China2. How many advantages of green tea does the writer present in this passage?A. Three B. Four C. Five D. Six3. Which of t

12、he following is not mentioned as one of the benefits of green tea? A. Lower total cholesterol levels B. Increase bodys immune system C. Improve circulation of the blood D. Slower aging process4. Green tea contains antioxidants that can slower aging process because . A. they fight certain bacteriaB.

13、they fight free radicalsC. they help to lower blood sugarD. they facilitate state for patients of chronic lymphocytic leukaemia5. According to this passage, caffeine in green tea . A. can make one too excited to sleep B. can make one feel inspired and have a fresh mind C. can make one different from

14、 what he used to be D. can keep one awake at a fixed time6. Why is green tea healthier than coffee? A. Coffee contains less caffeine than green tea.B. Caffeine in green tea cannot be absorbed.C. Coffee makes body lose too much water.D. Caffeine in green tea is more important than in coffee in keepin

15、g healthy.7. According to the author, green tea . A. can cause people to avoid some health disorders when consumed too oftenB. is not a cure for all diseases except insomnia C. can be consumed at willD. may have some side effects in some cases8. The effective way to take all the advantages of green

16、tea is . A. to brew green tea in an appropriate wayB. to choose the best green teaC. to cook green tea with cold waterD. to remove tea leaves or tea bag immediately after brewingDirections: Read the following passage, and then complete the sentences with the information given in the passage. Stay in

17、 Bed That Extra Hour: It Aids ThinkingPsychologists at the University of Rome pulled together more than 100 studies of the effects of sleep on cognitive tasks and found that staying out of bed for too long can have serious effects on the ability to remember and learn new information. For students, t

18、hey found that a bad nights sleep could even result in worse grades.“Recent studies in molecular genetics, neurophysiology and cognitive and behavioral neuroscience have strengthened the idea that sleep may play an important role in learning and memory, although the extent of this role remains hotly

19、 debated,” wrote Giuseppe Curcioa, Michele Ferrara and Luigi De Gennaroa in the journal Sleep Medicine Reviews. “There is still poor understanding as regards which aspects of memory function are affected by sleep and which processes underlie memory consolidation.”In one study, researchers compared h

20、ealth, behavior, sleep complaints and school performance of normal and poor sleepers. “Twenty-one per cent of poor sleepers failed one or more years at school, while similar problems were observed in just 11% of normal sleepers. Moreover, school achievement difficulties resulted more frequently in p

21、oor than in normal sleepers. One of the best predictors for this low school achievement has been identified in childrens fatigue,” said Professor Curcioa.A study of 3,000 high school students in 1998 showed that students with higher grades reported more total sleep, earlier bedtime on school nights

22、and less irregular sleep patterns at weekends than students with lower grades.Another study investigated the effects of total sleep deprivation on students in a laboratory. After 18 hours movement and response times slowed; at 34 hours endurance dropped; at 42 hours agility, balance and power were s

23、ignificantly weakened; at 50 hours speed was affected.The researchers concluded what teenagers have probably known unconsciously for years. “Sleep loss is frequently associated with poor declarative and procedural learning in students. Studies in which sleep was actively restricted or optimized（使最优化

24、）showed, respectively, a worsening or an improvement in neurocognitive and academic performance. These results may have been related to the specific involvement of the prefrontal cortex (PFC)（前额皮层）in vulnerability to sleep loss.” The PFC is the brain region that plans complex cognitive actions, expr

25、esses personality and makes sure a person behaves appropriately in social situations.Prof. Curcioa said the decrease in neurocognitive functioning could be reverted by adopting healthy sleep schedules.The advice from the experts, then, is simple. Stay in bed for that extra hour.1. Having studied the

26、 effects of sleep on cognitive tasks, psychologists at the University of Rome discovered that inadequate sleep can influence strongly the ability to .2. Psychologists found that for students a poor nights sleep could even lead to .3. Recent studies in some special fields have shown that sleep may in

27、 learning and memory. 4. According to some professors, people have about which aspects of memory function are affected by sleep and which processes underlie memory consolidation.5. Professor Curcioa said that 21% of failed in their exams, while only 11% of normal sleepers had similar problems.6. Com

28、pared with students with lower grades, students with higher grades have more sleep, earlier bedtime on school nights and at weekends.7. is often connected with bad declarative and procedural learning in students.8. According to Prof. Curcioa, healthy sleep schedules contribute to the recovery of .1.

29、 remember and learn new information 2. worse grades. 3. play an important role 4. poor understanding 5. poor sleepers 6. less irregular sleep patterns 7. Sleep loss 8. the decrease in neurocognitive functioningDirections: Read the following passage, and then answer the questions by choosing the best

30、 answer from the four choices marked ABCD. For questions 8-10, complete the sentences with the information given in the passage. New Advice: Dont Sit Up StraightThe longstanding advice to “sit up straight” has been turned on its head by a new study that suggests leaning back is a much better posture

31、.Researchers analyzed different postures and concluded that the strain of sitting upright for long hours is a criminal of chronic back problems.Using a new form of magnetic resonance imaging (MRI) (磁共振成像), researchers studied volunteers with no back pain history. The subjects assumed three different

32、 positions: slouching; sitting up straight at 90 degrees; and sitting back with a 135-degree postureall while their spines were scanned.“A 135-degree body-thigh sitting posture was demonstrated to be the best biomechanical sitting position, as opposed to a 90-degree posture, which most people consider normal,” said study author, Waseem Amir Bashir, a researcher at the University of Alberta Hospital in Canada. “Sitting in a sound anatomic position is essential, since the strain put on the spine and its associated