(浙江专版)2019版高考英语一轮复习 精选提分专练 第四周 星期六 阅读理解(科普知识类)完形填空(夹叙夹议文)+应用文写作.doc
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1、【 精品教育资源文库 】 阅读理解(科普知识类) 完形填空(夹叙夹议文) +应用文写作 . 阅读理解 (2018 甘肃通渭二中期中 ) If you want to slow aging, you might want to eat less.This finding is good news if you were a mouse.The researchers studied mice, not people. John Price and other researchers studied two groups of mice.One group was able to eat as
2、much as it wanted.The researchers limited what the mice in the other group ate.Their diet had 35 percent fewer calories than the first group of mice. Price says the mice with the diet restrictions were “more energetic and suffer ed fewer diseases”.They were not just living longer but seemed to stay
3、younger for a longer period of time. The researchers found that fewer calories slow down a natural mechanism in cells called ribosomes.Price explains that ribosomes are responsible for making important proteins in the cells.But with fewer calories, they slow down.This gives the cells more time to re
4、pair themselves. The researchers say ribosomes use from 10 to 20 percent of the cells energy to make those proteins.Price wrote that “because of this, it is impractical to destroy an entire ribosome” when it starts to break down.However , “repairing individual parts of the ribosome on a regular basi
5、s enables ribosomes to continue producing high quality proteins for longer than they would otherwise.This top quality production,in turn, keeps cells and the entire body functioning well.” Price said, “Ribosome is a very complex machine , like a car.” They need “maintenance to replace the parts that
6、 wear out the fastest.When tires wear out , ” he explained, “yo u dont throw the whole car away and buy a new one.It costs less to replace the old tires.” “Food , ” he said , “isnt just material to be burned its a signal that tells our body and cells how to respond.” Price said the findings help to
7、explain how exactly our bodies age.And this may “help us make more educated decisions about what we eat”. 1.What can we know about the mice with limited calories from the study? A.They can keep healthy easily. 【 精品教育资源文库 】 B.They need more energy to be active. C.They can look younger than they are.
8、 D.They will live a longer life like humans. 2.What will happen to ribosomes if there are fewer calories? A.They will completely break down. B.They make proteins in the cells slowly. C.They will produce high quality proteins more. D.They may need more time to repair themselves. 3.Price explained the
9、 ribosomes role of repairing themselves by . A.telling a story B.listing basic data C.making comparisons D.experimenting on mice 4.What does the text mainly deal with? A.Food decides how long you live. B.Can you slow down your aging process? C.Eating less may help you live longer. D.Should your diet
10、 be reduced for your health? . 完形填空 (2017 河北衡水中学联考 ) That was my first ballet performance and I was the lead role.A huge black curtain 5 me from the crowd.My heart raced so rapidly that it would 6 out of my chest.A rush of 7 shot through my body when the music began and I took my 8 at the center of
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