题目内容
5.Something in chocolate could be used to stop coughs and lead to more effective medicines,say UK researchers.Their study found that theobromine,found in cocoa,was nearly a third more effective in stopping coughs than codeine,which was considered the best cough medicine at present.
The Imperial College London researchers who published their results online said the discovery could lead to more effective cough treatment."While coughing is not necessarily harmful(有害的) it can have a major effect on the quality of life,and this discovery could be a huge step forward in treating this problem,"said Professor Peter Barnes.
Ten healthy volunteers(志愿者) were given theobromine,codeine or placebo,a pill that contains no medicine,during the experiment.Neither the volunteers nor the researchers knew who received which pill.The researchers then measured levels of capsaicin,which is used in research to cause coughing and as a sign of how well the medicine are stopping coughs.
The team found that,when the volunteers were given theobromine,the capsaicin need to produce a cough was around a third higher than in the placebo group.When they were given codeine they need only slightly higher levers of capsaicin to cause a cough compared with the placebo.
The researchers said that theobromine worked by keeping down a verve activity(神经活动),which cause coughing.They also found that unlike some standard cough treatments,theobromine caused no side effects such as sleepiness.
48.According to Professor Barnes,theobromineD.
A.cannot be as effective as codeine
B.can be harmful to people's health
C.cannot be separated from chocolate
D.can be a more effective cure for coughs
49.What was used in the experiment to cause coughing?C.
A.Theobromine.
B.Codeine.
C.Capsaicin.
D.Placebo.
50.Which of the following would be the best title for the text?B.
A.Codeine:A New Medicine
B.Chocolate May Cure Coughs
C.Cough Treatment:A Hard Case
D.Theobromine Can Cause Coughs.
分析 这是一篇科普性读物,选材于医药学的某一方面的研究-对巧克力中的可可碱独特的治疗咳嗽的功效的对比研究,证明可可碱是未来有效的治疗咳嗽的良药.
解答 48.D 推理判断题.从第二段的"Their study found that theobromine,found in cocoa,was nearly a third more effective in stopping coughs than codeine,which was considered the best cough medicine at present."可看出theobromine比codeine更为有效,另外第一段提到可可碱是由巧克力中提取出来的,因此可知正确选项D.
49.C细节理解题.A、B、D三项中的物品是用来做实验的物品,在文中第四段最后一句"The researchers then measured levels of capsaicin (辣椒素),which is used in research to cause coughing and as a sign of how well the medicine is stopping coughs."可知辣椒素用来引起咳嗽和作为这些药物如何止咳的依据.结合选项,故选C
50.B归纳主旨题.本文主要介绍巧克力中含有一种成分theobromine能很好的止咳效果,由此可知正确答案为B.
点评 本文是科教类阅读理解.做这类题材阅读理解时要求考生对文章通读一遍,做题时结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案.推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案,切忌胡乱猜测,一定要做到有理有据
A. | question | B. | advantage | C. | opinion | D. | possibility |
My husband Jeff and I moved into our new home in Scottsbluff last year just before Christmas.I did not have the (41)C or energy to carry out my traditional Christmas decorating and baking activities.What was the point,anyway?It was going to be a (42)A Christmas after all.
(43)B,the neighborly nature of west Nebraska residents started to trickle (陆续来临) in.
There was a (44)Bon the door one evening.It was Jeff's new colleague,John Smith,and his wife,Phyllis.The Smiths had stopped by to (45)Bus with a loaf of homemade bread.They pointed out a (46)Don the porch (门廊).Apparently the doorbell wasn't working in the cold snowy weather and we had (47)Ba visit from the Browns,our across-the-street neighbors,who brought us a Christmas card and more Christmas cookies.
The (48)Afeelings brought by these thoughtful gestures lasted longer than the food.
As Jeff and I were (49)Bpre-Christmas snow from our driveway,Ernie Guzman came over from next door to (50)Cus to dig out.
Then,we received an invitation to (51)Ba Christmas Eve meal with our neighbors,Ernie and Nancy Sommer,and their (52)A-a 90-year-old lady,who also had no family in the immediate area with whom to spend the holiday.
Our Christmas Eve was quite merry,thanks to our(53)C.Our Christmas morning(54)Dwas special,thanks to the Smiths'gift of bread.I was so (55)Cfor these gestures of welcome,especially during the holidays.
This year,we were again unable to be with our families for Christmas.The (56)Cand work schedules just made things too difficult.(57)Athat sense of Christmas isolation (孤立) all too well,we decided to try to round up some other folks who were (58)Cin the holidays.
Lonely people are all around us,but most of us (59)Dnotice them.Just take a look around you.Sometimes,the smallest (60)Bgesture can make a world of difference.
41.A.chance | B.anxiety | C.time | D.ability |
42.A.lonely | B.free | C.merry | D.usual |
43.A.Therefore | B.However | C.Somehow | D.Meanwhile |
44.A.sign | B.knock | C.card | D.note |
45.A.invite | B.welcome | C.drive | D.send |
46.A.tree | B.flower | C.mail | D.package |
47.A.forgot | B.missed | C.arranged | D.received |
48.A.warm | B.deep | C.true | D.mixed |
49.A.buying | B.clearing | C.preparing | D.giving |
50.A.teach | B.urge | C.help | D.forbid |
51.A.prepare | B.share | C.taste | D.exchange |
52.A.guest | B.aunt | C.maid | D.partner |
53.A.folks | B.relatives | C.neighbors | D.colleagues |
54.A.call | B.greeting | C.meeting | D.breakfast |
55.A.sorry | B.eager | C.grateful | D.ready |
56.A.season | B.expense | C.distance | D.situation |
57.A.Knowing | B.Showing | C.Studying | D.Discovering |
58.A.happy | B.busy | C.alone | D.active |
59.A.always | B.usually | C.finally | D.seldom |
60.A.careful | B.kind | C.pretty | D.patient |
A. | What; because | B. | What; that | C. | That; what | D. | That; because |