2015届高考英语二轮专题检测精品练习 阅读理解（5）

1、2015届高考英语二轮专题检测精品练习：阅读理解（5）A(2014届合肥一模)Can people change their skin color without suffering like pop king Michael Jackson？Perhaps yes.Scientists have found the gene that determines skin color.The gene comes in two versions，one of which is found in 99 per cent of Europeans.The other is found in 93 to 100 per cent of Africans，researchers at the Pennsylvania State University report in the latest issue of Science.Scientists have changed the color of a darkstriped zebrafish (斑马鱼) to gold by inserting

2、 a version of the pigment (色素) gene into a young fish.As with humans，the skin color of zebrafish is determined by pigment cells，which contain melanin (黑色素)The number，size and darkness of melanin per pigment cell determine skin color.It appears that，like the golden zebrafish，lightskinned Europeans also have a mutation (变异) in the gene for melanin production.This results in less pigmented skin.However，Keith Cheng，leader of the research team，points out that the mutation is different in human and ze

3、brafish genes.Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultraviolet rays of the sun，which can cause skin cancer.But when modern humans leave Africa to live in northern latitudes，they need more sunlight on their skin to produce vitaminDSo the related gene changes，according to Cheng.Asians have the same version of the gene as Africans，so they probably acquired their light skin through the action of some other gene that affects skin color，said Cheng.The

4、new discovery could lead to medical treatments for skin cancer.It also could lead to research into ways to change skin color without damaging it like chemical treatment did on Michael Jackson.5Scientists have done an experiment on a darkstriped zebrafish in order to_.Afind the genes that are different from humansBprove the skin color of zebrafish is determined by the pigment geneCfind out the reason why Africans skin color is darkDfind out the ways to change peoples skin color6The passage mainly

5、 tells us that_.Ascientists have found out the gene that determines peoples skin color Bthe new discovery could lead to research into ways to change skin color safelyCpop king Michael Jackson often changed his skin color as he likedDpeople cannot change their skin color without any pain7The reason why Europeans are lightskinned is probably that_.Athey are born lightskinned peopleBlightskinned Europeans have mutation in the gene for melanin productionCthey have fewer activities outsideDthey pay m

6、uch attention to protecting their skin8The writers attitude towards the discovery is_. Aneutral Bnegative Cindifferent Dpositive答案：B Frank Smithson woke up and leaned over to turn off the alarm clock. Oh no! he thought to himself.Another day at that office; a boss who shouts at me all the time. As Frank went downstairs his eyes fell on a large brown envelope by the door. He was overjoyed when he opened it and read the letter inside.Bigwoods Football Polls (足球赌博公司)would like to congratulate you.

7、You have won half a million pounds. Farnk suddenly came to life. The cigarette (香烟) fell from his lips as he let out a shout that could be heard halfway down the street. At l1:30 Frank arrived at work.Please explain why youre so late, his boss said. Go and jump in the lake, replied Frank. Ive just come into a little money so this is goodbye. Find yourself someone else to shout at. That evening Frank was smoking a very expensive Havana cigar (雪茄) when a knock was heard on the door. He rushed to t

8、he door. Outside were two men,nearly dressed in grey suit.Mr Smithson, one of them said, Were from Bigwoods Pools. Im afraid theres been a terrible mistake1. What do we know about Frank?_. A.He was a lazy man. B.He was a lucky person C.We didnt make a lot of money D.He didnt get on well with his boss.2. When he heard the knock at the door, Frank probably thought_. A.someone had come to make an apology. B.someone had come to give him the money. C.his friends had come to ask about the football poo

9、ls. D.his friends had come to congratulate him on his luck.3. On hearing . theres been a terrible mistake. Frank was most likely to be_. A.disappointed B.worried C.nervous D.curiousCDear Michelle, Why cant my daughter manage her life better? She is 17 and an honor student, but she seems to be wasting her life away with a boyfriend who is holding her back. He consumes every waking minute of her precious time and smooth-talks her as well. His goal is to get her to agree to go to the college of his choice, not her choice, and because his grades are lower, his choice will be limited. I feel like I want to rescue her, but she pushes me away and

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