14.It has become a certain belief among the public----drink at least eight glasses of water a day to improve health and wellbeing.Bottled water companies often repeal it to increase their sales but it is actually a silly idea.There is no evidence to prove the advantages of drinking eight glasses of water a day,scientists say.
The misunderstanding is caused from the suggestion that adults should drink 2.5 liters of water daily,which was stressed by the British Medical Journal in December.The important part of the suggestion that most of this quantity of water is contained in prepared foods,however,is usually ignored.
US researchers who reviewed the evidence concluded that most people do not need to worry about the amount of water they drink every.day.Besides drinking water,they will be getting plenty of liquid(液體)in other ways.Caffeinated drinks such as tea,coffee and cola and alcohol(酒)can help reach the daily total if they don't drink too much,though these drinks help the production of urine (尿).Less well known arc the dangers of drinking too much water,causing water poisoning,low salt levels and even death.
The review of research by Dan Negoianu,from the University of Pennsylvania,found that not a single study included the suggestion of drinking eight glasses of water a day.Although one small study suggested that drinking water could result in fewer headaches,the results were not very important.However,the benefits of drinking some water to prevent a pain in head after drinking too much alcohol are,separately,proved to be true.
No studies showed any advantages to the color of the skin because of the increased water taken into bodies.Dehydration(脫水)can make skin less pleasant,but there was no clear evidence to support the idea that water helps people keep a youthful appearance.The researchers also found no evidence that drinking lots of water does some good to the body's organs(器官).
28.From the passage,we know that the suggestion about drinking eight glasses of water a dayC.
A.causes some serious diseases
B.has enough scientific evidence to support it
C.is misunderstood by people in fact
D.was published by the British Medical Journal
29.From the passage we learn that many people don't know thatD.
A.the production of urine can cause water to lose
B.health can be improved by drinking plenty of'water
C.better skin can result from intake of much water
D.caffeinated drinks can provide the water people need
30.What can be proved about drinking a lot of water according to the passage?A
A.Reducing the bad influence of drinking alcohol.
B.Helping to keep youthful looks.
C.Making the body's organs stronger.
D.Causing bad headaches.
31.The writer's main purpose of writing this passage is toB.
A.persuade people to drink different kinds of water
B.tell people drinking much water is not as healthy as is considered
C.warn people of the danger of drinking much water
D.help people realize the importance of drinking enough water every day.
分析 文章主要以研究結(jié)果來告訴人們"每天喝八杯水來保持健康"是一種誤導(dǎo)性的認(rèn)識,沒有證據(jù)表明"每天喝八杯水"有什么好處,相反飲水過多會帶來水中毒、低鹽甚至是死亡的危險.
解答 28-31.CDAB
28題答案:C 考查細(xì)節(jié)推理,根據(jù)文章第一段最后一句的"There is no evidence to prove the advantages of drinking eight glasses of water a day,scientists say."(科學(xué)家說沒有證據(jù)來證明每天喝八杯水的好處)可知本題答案為C選項.
29題答案:D 考查細(xì)節(jié)推理,根據(jù)文章第三段的"…most people do not need to worry about the amount of water they drink every.day.Besides drinking water,they will be getting plenty of liquid(液體)in other ways.Caffeinated drinks such as tea,coffee and cola and alcohol(酒)can help reach the daily total if they don't drink too much…"(…大多數(shù)人沒必要擔(dān)心他們每天喝水的量.除了喝水,他們還能用其它方式得到大量的液體.諸如茶、咖啡、可樂及酒這樣的含咖啡因飲料能幫助人們達到日常所需的總量--前提是不要過度飲用)可知本題答案為D選項.
30題答案:A 考查細(xì)節(jié)推理,根據(jù)文章倒數(shù)第二段的"However,the benefits of drinking some water to prevent a pain in head after drinking too much alcohol are,separately,proved to be true."(然而飲酒過多之后喝一些水來防止頭疼卻例外地被證明是真的)可知本題答案為A選項.
31題答案:B 考查文章大意,文章主要以研究結(jié)果來告訴人們"每天喝八杯水來保持健康"是一種誤導(dǎo)性的認(rèn)識,沒有證據(jù)表明"每天喝八杯水"有什么好處,相反飲水過多會帶來水中毒、低鹽甚至是死亡的危險,故本題答案為B選項"告訴人們多喝水并沒有它被認(rèn)為的那樣健康".
點評 本文是一篇科教類閱讀,題目涉及多道細(xì)節(jié)理解題,做題時結(jié)合原文和題目有針對 性找出相關(guān)語句進行仔細(xì)分析,結(jié)合選項選出正確答案.推理判斷也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確的答案.