首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
To live forever was the dream of many emperors in ancient China. People was ordered to call them Wansui, which means 10 000 year
To live forever was the dream of many emperors in ancient China. People was ordered to call them Wansui, which means 10 000 year
admin
2013-01-28
21
问题
To live forever was the dream of many emperors in ancient China. People was ordered to call them Wansui, which means 10 000 years, but no human could live that long. How long can humans really live? According to the latest scientific discovery, humans are able to live up to the age of 120 or perhaps even longer.
Several recent studies showed that our life span can be extended far beyond normal limits. Cynthia Kenyon, a professor at the University of California in San Francisco, doubled the life of a worm from two weeks to a month. By changing the function of a single gene, known as daf-2, the scientist not only added extra days to the worm’s life but also kept it as healthy as worms which were half its age.
There are two similar genes in the bodies of mammals. By changing the function of one gene, scientists extended the life of a mouse by 18 per cent (or 4. 5 months). Another gene is called IGF-1. Researchers still don’t know how it affects our body. But by reducing its functions, the life of a mouse increases by 33 per cent (or 8. 6 months). The average life span of a mouse is 26 months.
In the experiment of extending life,
an ancient saying
, ’’you are what you eat," also seems to be true. Vegetables contain fewer calories than meat, and help to prolong life, scientists say. Research has found that taking in fewer calories affects our lives in a similar way to reducing IGF-1.
US biologist John Phelan suggests low calorie diets could increase human life span, but there is no proof yet.
Researchers are still waiting for the results of a study started in 1987. Monkeys are fed with low calorie food to see what happens. A monkey’s typical life span is 40 years, so there is a little while to wait.
In China, average life expectancy has now reached 70, double that of 1949. Increasing the length of our lives may bring us closer to the dreams of our ancient emperors. But it may also cause social problems such as housing and employment, social scientists have warned. (360 words)
Which of the following is false?
选项
A、It’s advisable that we eat vegetarian foods always.
B、Different living creatures have diverse genes concerning life expectancy.
C、Nowadays people can live twice longer than the people before 1949.
D、There is still a long way to go before humans can find the solution to human life span.
答案
C
解析
由于C项“如今的人寿命比1949年那个年代的人寿命长一倍”,没有限定中国人,而文章中有in China,故选C。
转载请注明原文地址:https://kaotiyun.com/show/kk1O777K
0
考博英语
相关试题推荐
Itwillbesafertowalkthestreetsbecausepeoplewillnotneedtocarrylargeamountsofcash.Virtuallyallfinancial_______
Inrecentyearsmanycountriesoftheworldhavebeenfacedwiththeproblemofhowtomaketheirworkersmoreproductive.Some
Whenthestrangerwalkedtowardshim,hefled,thedoor_____behindhim.
However,growthinthefabricatedmetalsindustrywasableto______someofthedeclineintheironandsteelindustry.
(66)Highunemploymentrates,especialamongyoungworkers,haveledtoprotestsincountriesasvariedasLatvia,Chile,Greece
WhenwethinkofHollywood--atermIuselooselytodescribeAmericanmovieproductioningeneral,notsimplyfilmsmadeinLos
Forscientistswhostudyhumanevolution,fossilremainsprovidetheonlydirectevidenceofourancientancestors.Accesstoth
Placingahumanbeingbehindthewheelofanautomobileoftenhasthesamecuriouseffectascuttingcertainfibresinthebrain
Itwas3:45inthemorningwhenthevotewasfinallytaken.Aftersixmonthsofarguingandafinal16hoursofhotparliamentar
In1998consumerscouldpurchasevirtuallyanythingovertheInternetBooks,compactdiscs,andevenstockswereavailablefrom
随机试题
收益递减规律对于一宗土地来说,表现在对该宗土地的()超过一定限度后,收益开始下降。
下列影响焊接工艺因素中,《承压设备焊接工艺评定》NB/T、47014规定不属于各种焊接方法的重要影响因素有()。
创建新账套,输入账套基本信息。账套号:101账套名称:南昌电机有限公司账套路径:默认账套启用日期:2014年1月1日单位简称:上海电机企业类型:工业行业性质:小企业会计制度(按行业性质预置科目)账套主管:张兰
()是指并购公司采取直接向目标公司的股东增加发行本公司的股票,以新发行的股票交换目标公司的股票。
【2017下】下列教师课堂行为中,体现教师正确运用无意注意规律的是()。
1.“我和烤肉之间,只差一撮孜然。”这是网友对今夏高温的一句调侃。热!全国进入“烧烤模式”!这大概是今夏给我们的最深切感受了。上海刷新140年纪录,杭州刷新60年记录,40℃气温,70℃地表温度,多地民众酷热难耐。湖南、浙江、北京、湖北、重庆、江苏高温覆盖
有一次,苏格拉底淌水过河,脚一划,落水了。他拼命挣扎,大喊救命,不远处有个钓鱼者不但不救他,反而转身就走。最后是他的学生救了他。后来那个钓鱼者淌水过河,也落水了,苏格拉底和他的学生正巧在河边散步,便用竹竿把他救了上来。当学生们知道救上来的就是那个钓鱼者时,
以公司特有的各种动产或有价证券作为抵押品而发行的公司债券,称为()。
Onceyouarehiredasacompany(11),youwillprobablyhavebusinesscards.Abusinesscardisprintedwithyourname,title,
A、Thepolicewantpeopletousethemtoreportcrimes.B、Theyareveryhandyanduseful.C、Theyaremuchcheaperthanthoseyear
最新回复
(
0
)