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
Multidisciplinary science is all the rage these days. Even (31), the overlap between archaeology and pharmacology is not, at fir
Multidisciplinary science is all the rage these days. Even (31), the overlap between archaeology and pharmacology is not, at fir
admin
2009-06-24
56
问题
Multidisciplinary science is all the rage these days. Even (31), the overlap between archaeology and pharmacology is not, at first (32), obvious. But there is a connection. An analytical technique developed for the (33), used to work out how old things are, is now (34) used in the latter, to see if promising drugs are likely to fail (35) expensive clinical trials are undertaken.
At the (36), a third of drug candidates do not pass such trials. This may be (37) they fail to reach the part of the body where they are (38) to work—many molecules, for (39), cannot cross from the bloodstream into the brain. Or it may be that the body breaks down the active ingredients before the drug has time to act. Identifying (40) problems early in the testing process would be a boon. Trials on (41) can help, but how other species react is not always a good indication of how people will. What is needed is a way of testing potential drugs on people, (42) in a way that cannot possibly cause any harm. That is (43) the archaeologists come in.
(44) decades, archaeologists have used a technique called carbon dating to work (45) how old their finds are. Some of the carbon dioxide absorbed by plants during photosynthesis is (46). That is because it contains carbon atoms which are (47) than run-of-the-mill carbon, and are unstable. The radioactive carbon atoms weigh 14 atomic units, (48) nm-of-the-mill ones weigh 12 units. Food grains, scraps of cloth and so on can thus be dated by finding out how (49) radioactive carbon is left in them: the less there is, the (50) they are. (278 words)
选项
答案
because/that
解析
转载请注明原文地址:https://kaotiyun.com/show/bCTd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
Inabullfight,itisthemovement,notthecolor,ofobjectsthatarousesthebull.
Shehasbeenthesubjectofmassivemediacoverage.
SpaceResearchDoeswalkingonthemoonmakelifebetterforpeopleonearth?【51】alltheproblemsofourownworld,whyshou
SpaceResearchDoeswalkingonthemoonmakelifebetterforpeopleonearth?【51】alltheproblemsofourownworld,whyshou
ACountry’sStandardofLivingThe“standardofliving”ofanycountrymeanstheaverageperson’sshareofthegoodsandservic
ACountry’sStandardofLivingThe“standardofliving”ofanycountrymeanstheaverageperson’sshareofthegoodsandservic
Newbornbabiescandiscriminatebetweenaman’sandawoman’svoice.
TheImportanceofAgricultureinChinaThedevelopmentofagricultureandthebalancebetweenfoodandpopulationareChina’
Itislaiddownintheregulationsthatallmembersmustcarrytheirmembershipcardsatalltimes,
Wheredidclassicalmusicoriginate?
随机试题
FULLTIMEDRIVERSWANTEDCleandrivinglicence.Mustbeofsmartappearance.Agedover25.Applyto:CapesTaxis,17
不是丙肝的流行病学特征的是
频数表不能用于
A.无痔核脱出B.便时痔核能脱出肛外,便后能自行还纳C.便时痔核经常脱出肛外,不能自行还纳D.痔核即脱出肛外,手托亦常不能复位E.痔核经常位于肛外,易感染属于I期内痔特点的是
A、蒸发B、辐射C、传导D、对流E、辐射、传导和对流气温高于皮肤温度时散热方式是
初产妇,产后第2天,会阴侧切伤口水肿明显,局部无分泌物和压痛。护理措施不正确的是
有法谚云:“法律为未来作规定,法官为过去作判决”。关于该法谚,下列哪一说法是正确的?
施工技术交底内容编制完成后,须由项目技术负责人审核或批准的是()。
会计职业道德是会计法律制度正常运行的社会和思想基础。()
根据以下资料,回答81-85题2009年全年全国房地产开发投资36232亿元,比上年增长16.1%。其中,商品住宅投资25619亿元,增长14.2%;办公楼投资1378亿元,增长18.1%;商业营业用房投资4172亿元,增长24.4%。以下说法错
最新回复
(
0
)