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
考研
Although Consumers Union concedes that " no confirmed cases of harm to humans from manufactured nanoparticles have been reported
Although Consumers Union concedes that " no confirmed cases of harm to humans from manufactured nanoparticles have been reported
admin
2015-09-30
72
问题
Although Consumers Union concedes that " no confirmed cases of harm to humans from manufactured nanoparticles have been reported", it adds that "there is cause for concern based on several worrisome findings from the limited laboratory and animal research so far. " It worries that particles that are nontoxic at normal sizes may become toxic when nanosized; that these nanoparticles, which are already present in cosmetics and food, can more easily "enter the body and its vital organs, including the brain", than normal particles; and that nanomaterials will linger longer in the environment. All of this really comes down to pointing out that some particles are smaller than others. Size is not a reliable indicator of potential harm to human beings, and nature itself is filled with nanoparticles. But the default assumption of danger from the new is palpable.
Anti-nanotech sentiment has not been restricted to Consumers Union ’ s relatively short list of concerns. In France, groups of hundreds of protesters have rallied against even such benign manifestations of the technology as the carbon nanotubules that allow Parkinson’s sufferers to stop tremors by directing medicine to their own brains. In England members of a group called THRONG(The Heavenly Righteous Opposed to Nanotech Greed)have disrupted nanotech business conferences dressed as angels. In 2005 naked protesters appeared in front of an Eddie Bauer store in Chicago to condemn one of the more visible uses of nanotech: stain-resistant pants.
These nanopants employ billions of tiny whiskers to create a layer of air above the rest of the fabric, causing liquids to roll off easily. It’s not quite what Kurzweil and Crichton had in mind, nor is it "little robots in your pants", as CNN put it. But nanotechnology arguably embraces any item that incorporates engineering at the molecular level, including mundane products like this one.
Just as the nano label can be broadly applied to products for branding and attention-grabbing purposes, so too can critics use the label to condemn barely related developments by linking them to the(still hypothetical)problems of nanopollution and gray goo. But there’s a danger in thinking of nanotech only in god-or-goo terms. People at both extremes of the controversy fail to appreciate the humble, incremental, yet encouraging progress that nanotech researchers are making. And focusing on dramatic visions of nanotech heaven or hell may foster restrictions that delay or block innovations that can extend and improve our lives.
The example of carbon nanotubules is cited to show that ______.
选项
A、anti-nanotech sentiment predominates in France
B、nanotech relieves the pain of Parkinson’s sufferers
C、even potential benefit of nanotech may cause worry
D、Consumers Union’s worry about nanotech is negligible
答案
C
解析
根据第二段第二句“…protesters have rallied against even such benign manifestations of thetechnology as the carbon nanotubules…”,C应为答案。
转载请注明原文地址:https://kaotiyun.com/show/ZPzZ777K
0
考研英语一
相关试题推荐
Accordingtothepassage,theAmericanhealth-caresystem______.Itisimpliedinthelastparagraphthatifahospitalusesit
ControlanUniversityLogisticNumber,BoycottSchoolFeesRiseOverthelasttwodecades,collegesanduniversitiesdoubled
Allanimalsmustrest,butdotheyreallysleepasweknowit?Theanswertothisquestionseemsobvious.Ifananimalregularly
Gettingotherpeopletodowhatyouwantthemtodoisanartandasciencethatyoumustmasterifyouwanttosucceedinthis
Itisallverywelltoblametrafficjams,thecostofpetrolandthequickpaceofmodernlife,butmannersontheroadsarebe
Itistheworld’sfourth-most-importantfoodcrop,aftermaize,wheatandrice.Itprovidesmorecalories,morequickly,usingl
Advertisingisaformofselling.Forthousandsofyearstherehavebeenindividualswhohavetriedto(1)_____otherstobuyth
Advertisingisaformofselling.Forthousandsofyearstherehavebeenindividualswhohavetriedto(1)_____otherstobuyth
Advertisingisaformofselling.Forthousandsofyearstherehavebeenindividualswhohavetriedto(1)_____otherstobuyth
ThemostthoroughlystudiedintellectualsinthehistoryoftheNewWorldaretheministersandpoliticalleadersofseventeenth
随机试题
保护会阴最主要的要点是()
男性,22岁,飞机起飞前因座位上方行李滑下,致颅脑损伤入院2小时后,突然出现心跳、呼吸骤停,立即行人工复苏术,并实施电除颤成人首次胸外除颤的电能为()
具有补气养血,调经止带功效的中成药是
下列哪项不符合胸壁疾患所致胸痛的特点()
胜利快餐店是由王某、李某、赵某和徐某合伙出资开办的企业,开业一年来经营不佳,亏损2万元。以下几种情况中,不属于合法退伙事由的有:()
评估报告应由评估机构法人代表和至少()名注册资产评估师签名盖章。
甲公司为增值税一般纳税人,主要生产和销售洗衣机。2014年3月有关经济业务如下:(1)购进一批原材料,取得增值税专用发票上注明的税额为272000元;支付运输费,取得增值税专用发票上注明税额2750元。(2)购进低值易耗品,取得增值税普通发票上注明的税
小说:诗歌:文学
Atlasthereffortsborefruit.BurtonwasappointedtoSantos,inBrazil,whereIsabelmightalsogo.Theymadetheirfarewell
A、6milliondollars.B、25milliondollars.C、6,000dollars.D、400milliondollars.B短文说:“制造这种飞机至少要花费2500万美元。”故答案为B。
最新回复
(
0
)