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
When researchers come up with a new treatment that makes us feel or work better, it’s usually not just the truly sick who end up
When researchers come up with a new treatment that makes us feel or work better, it’s usually not just the truly sick who end up
admin
2013-06-02
46
问题
When researchers come up with a new treatment that makes us feel or work better, it’s usually not just the truly sick who end up going in for an upgrade. The progress in developing treatments for illnesses that ravage memory and thought raises an important question: might the same tools be used to improve the functioning of minds that by most standards are already running fairly smoothly? We may well be approaching an era of designer brains, in which those of us feeling a little foggy or dull can have our IQ, fast recall, and self-confidence inflated up via the prescription pad. "Some brain-related conditions we think of as ordinary, "says one researcher, "may eventually become disorders, too"—including perhaps less-than-razor-sharp thinking.
The notion of a prescription IQ lift is hardly new. According to polls, about one in 20 college students, and higher percentages of professors, already illicitly pop some form of Ritalin or Modafinil—legitimately prescribed for attention-deficit disorder and narcolepsy (嗜睡症), respectively—to augment alertness, concentration, and memory. But these drugs have proved only mildly effective on normal minds, and carry potentially severe side effects ranging from addiction to overstimulation.
Scientists had originally hoped that the decoding of the human genome would lead quickly to small groups of genes that control major mental disorders and traits, be they Alzheimer’s disease (老年痴呆症), intelligence, or personality. That hasn’t been the case; individual genes turn out in most cases to only weakly affect the brain, with most illnesses emerging from the interaction of large, complex networks of hundreds of genes.
That challenge hasn’t kept researchers from tracking down many of the genes in these networks to chip away at the genetic roots of mental disorders—and to come up with possible treatments based on some of those findings. The result is that medicine may allow us to challenge our genetic inheritance and repair environmental insults to the brain, whether as Alzheimer’s sufferers or just moody, forgetful people and hazy thinkers. Techniques undergoing testing now include altering genes within brain cells, or even pushing genes into creating altogether new brain cells. Neurologix in Fort Lee, New Jersey, for example, is developing brain-related gene therapies, which involve injecting harmless viruses that insert custom-built genes into cells. Though other experimental gene therapies have in the past often caused severe and even fatal side effects, Neurologix hopes to avoid them by targeting the viruses only at those cells that need repairing.
In Fact, We won’t necessarily have to turn to these more radical therapies to sharpen our thinking. The genetic and other new scientific insights into the brain are also helping to point the way to new drugs targeted at brain disorders— drugs that may also end up being taken as smart drugs by many of us without serious disorders.
What can we learn from the Paragraph 3?
选项
A、The genes of Alzheimer’s disease have been decoded after the decoding of human genome.
B、Brain diseases usually are the outcome of interaction of complicated groups of genes.
C、The scientists’ findings on genes have quickly lead to understanding of mental diseases.
D、the complexity had stopped the researchers from come up with treatment to mental diseases.
答案
B
解析
根据题干关键词the third paragraph定位到原文第三段第二句:... most illnesses emerging from the interaction of large,complex networks of hundreds of genes.可知大多数精神和大脑疾病是有几百组大型复杂的基因群相互作用引起的,故B项符合原文。
转载请注明原文地址:https://kaotiyun.com/show/brB7777K
0
大学英语六级
相关试题推荐
______(无论你在讨论多么有趣的事情).gossipingintheofficeeasilycausesyoutoendworklife.
Twentyyearsagothisweek,theBritishinventorTimBerners-Leecreatedtheworldsfirstwebpage.Itisworth【B1】______theex
Olderpeoplewhoholdtemporaryorpart-timejobsafterretirementenjoybetterphysicalandmentalhealththanthosewhostopw
WeShouldBalanceOurLove1.现在有很多人关心下一代超过关心上一代2.这一现象带来什么问题3.你认为应该怎么做
Allthelocalgovernmentbodiesaresimilarintheirlackofrightsto______.WhatisthemostlikelyreasonfortheBritishsy
Localgovernmentispoliticaladministrationofthesmallestsubdivisionsofacountry’sterritoryandpopulation.Althoughther
OnehundredandthirteenmillionAmericanshaveatleastonebank(36)______creditcard.Theygivetheirowners(37)______cred
A、Halfayear.B、Fourorfiveyears.C、Threeyears.D、Oneyear.B数字判断题文章的最后提到了几个不同的数字,其中,学生们要完成学业需要4—5年的时间。
A、Learnfromhersinceshetooktheclass.B、Concentrateonthesectiononprostaglandin.C、Studytheexampapers.D、Workharder
Whethertheeyesare"thewindowsofthesoul"isdebatable;thattheyareintenselyimportantin(36)______communicationisa
随机试题
以下关于原发性甲状腺功能亢进的叙述不正确的是
A、单纯部分性发作B、癫痫大发作C、复杂部分性发作D、癫痫持续状态E、失神性发作首选乙琥胺的是
既能治疗肝气郁滞、胁肋疼痛、疝气疼痛,又可治疗食积不化的药物是
《生活垃圾填埋场污染控制标准》(GB16889—2008)规定,生活垃圾填埋场应建设渗滤液导排系统,该导排系统应确保在填埋场的运行期内防渗衬层上的渗滤液深度不大于()。
根据《担保法》的司法解释规定,本案中以依法获准尚未建造的建筑物设定抵押的行为属于()。原告起诉投资公司()。
中国居民企业股东能够提供资料证明其控制的外国企业满足以下()条件的,可免予将外国企业不作分配或减少分配的利润视同股息分配额,计入中国居民企业股东的当期所得。
选择性旅游按照旅游产品形态又称为()。
红茶属于半发酵茶。()
2019年,广东规模以上工业企业用水量39.54亿立方米,分水种看,自来水用水量最大,达35.67亿立方米,占全部用水量的90.2%;地表淡水用水量2.52亿立方米,地下淡水0.03亿立方米,其他水1.32亿立方米。分地区看,珠三角
下列有关类成员的叙述中,正确的是()。
最新回复
(
0
)