Question

8．Humans aren't the only ones getting a buzz from coffee．Caffeine can improve memory among honeybees and lead to better pollination（授粉）．According to a recent study published in the journal Science．
The study was conducted by a team of researchers at Newcastle University in the United Kingdom．They found that the nectar（花蜜） of some flowers，such as those from grapefruit and lemon plants，as well as certain coffee flowers，contains low doses of caffeine．To get bees to feed on these flowers，the team trained the insects to associate food with the smell of the flowers．They also trained another group of bees to feed on nectar from flowers that were sweetened with a sugar，but did not contain caffeine．After 24 hours，the bees trained on caffeinated flowers returned to these plants three times as often as those trained on the sweetened flowers returned to the uncaffeinated plants．
Professor Geraldine Wright led the researchers．"Remembering floral traits （花部特征） is difficult for bees to perform at a fast pace as they fly from flower to flower and we found that caffeine helps the bee remember where the flowers are，"Wright said in a statement．
Improved memory led to the better pollination．That's because once bees sip the caffeine nectar，they continue to look for more coffee plants to pollinate．This also suggests that caffeine plays a role in improving the bees'ability to search for food．
Researchers found that caffeine's effect on the bee brain is similar to its effect on mammals．"The change is similar to that produced by caffeine in neurons （神經(jīng)元）"associated with learning and memory in the rat brain，"Wright said．
Bee populations have declining since 2007．The dramatic drop in the insects'numbers has serious effects for ecosystems and the farming industry．Bees are needed in the reproduction of crops and spreading wild flower species．Understanding what keeps bees buzzing could help to make sure that the insects are able to remember and pollinate their favorite flowers．

56．Which of the following is mentioned in the passage？C
A．Caffeine has no effect on the rat brain．
B．Bee population has been increasing．
C．The nectar of lemon plants contains caffeine．
D．Bees dislike nectar from sweetened flowers．
57．After reading the passage，John，who works in the farming industry，will probably feelD．
A．a(chǎn)nnoyed          
B．a(chǎn)ngry               
C．nervous         
D．excited
58．Which of the following relationship is correct according to the passage？B
A．improved memory-caffeine nectar-better pollination
B．caffeine nectar-improved memory-better pollination
C．improved memory-better pollination-caffeine nectar
D．caffeine nectar-better pollination-improved memory
59．We can know from the passage thatA．
A．the rat is a mammal                      
B．caffeine has nothing to do with memory
C．bees are good at remembering floral traits      
D．Geraldine Wright did the research on his own
60．What section of a newspaper may this passage be taken from？A
A．Science              
B．Education           
C．Culture         
D．Sports．

Answer 1

分析 本文是一篇科教類閱讀，文章主要介紹了發(fā)表在科學(xué)雜志上最近的一項研究．研究發(fā)現(xiàn)，不僅咖啡中含有咖啡因，一些花的花蜜，比如來自檸檬等的花蜜，也會含有低劑量的咖啡因．

解答 56．C細(xì)節(jié)理解題．根據(jù)第二段They found that the nectar（花蜜）of some flowers，such as those from grapefruit and lemon plants，as well as certain coffee flowers，contains low doses of caffeine．可知他們發(fā)現(xiàn)一些花的花蜜，比如來自檸檬等的花蜜，含有低劑量的咖啡因．故選C．
57．D推理判斷題．根據(jù)最后一段的內(nèi)容可知，蜜蜂對生態(tài)和農(nóng)業(yè)生產(chǎn)有比較大的影響，所以當(dāng)Jonh讀完這篇文章后，當(dāng)然是興奮的，認(rèn)為生活有希望了．故選D．
58．B細(xì)節(jié)排序題．根據(jù)第三段caffeine helps the bee remember where the flowers are，"Wright said in a statement．和第四段Improved memory led to the better pollination．可知咖啡因有助于蜜蜂記得花在哪，而記憶力的提高促使更好的授粉．則正確順序為"caffeine nectar-improved memory-better pollination"．故選B．
59．A細(xì)節(jié)理解題．根據(jù)倒數(shù)第二段的內(nèi)容可知，研究人員發(fā)現(xiàn)，咖啡因?qū)γ鄯浯竽X的影響和對哺乳動物的影響相似．比如，在大鼠腦中產(chǎn)生的咖啡因與學(xué)習(xí)和記憶有關(guān)． 由此可知，大鼠是哺乳動物．故選A．
60．A推理判斷題．根據(jù)第一段According to a recent study published in the journal Science．可知最近的一項研究發(fā)表在科學(xué)雜志上．故選A．

點(diǎn)評 本文考察學(xué)生的理解推斷能力以及細(xì)心程度，只要抓住文章的關(guān)鍵詞，采用尋讀的方法查找細(xì)節(jié)，就能找到正確答案．