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
33
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
being/also
解析
转载请注明原文地址:https://kaotiyun.com/show/6CTd777K
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
Ofthereptilegroups,thesnakegroupwasthefinalonetoappear.
SpaceResearchDoeswalkingonthemoonmakelifebetterforpeopleonearth?【51】alltheproblemsofourownworld,whyshou
ACountry’sStandardofLivingThe“standardofliving”ofanycountrymeanstheaverageperson’sshareofthegoodsandservic
FoodandHealthThefoodweeatseemstohaveprofoundeffectsonourhealth.Althoughsciencehasmadeenormousstepsinma
Howdoesthedormousedefenditselfagainstcoldinwinter?Whatkeepsanimalsaliveduringhibernation?
CoveringtheCostAllbyHimselfUniversitylifeisinnowaycheapinCanada.ItcostsPeterKemp,acomputersciencemajor
SaveEnergyatHomeOntheaverage,Americanswasteasmuchenergyastwo-thirdsoftheworld’spopulationconsumes.That’s(1)
SaveEnergyatHomeOntheaverage,Americanswasteasmuchenergyastwo-thirdsoftheworld’spopulationconsumes.That’s(1)
Wheredidclassicalmusicoriginate?
Wheredidriceoriginate?
随机试题
A.腰背肌肌膜炎B.类风湿关节炎C.强直性脊柱炎D.骨质疏松症E.腰椎间盘突出身长缩短,腰背疼痛可能为
患者,男,45岁。缺失,余留牙正常如果做铸造支架可摘局部义齿,用RPI卡环,牙体预备时应备出
一日仅服1次的长效抗高血压药的最佳服用时间是
为了保证变压器的主保护与配出回路的选择性配合,变压器低压侧主保护断路器()设置瞬时过电流脱扣器。
下列关于仲裁协议效力的表述中,符合仲裁法律制度规定的有()。
我国目前所见到的最古老的曲谱,是由南北朝梁代丘明传谱的_________。
根据琼斯的对应推论理论,在下列哪种情况中,人们可以更好地确定小强的行为是与他本身的人格、态度等品质相对应的?()。
Whatisthebesttitleofthispassage?______Accordingtothepassage,improvisationwasmostpopular______
数据结构包括数据的逻辑结构、数据的【】以及对数据的操作运算。
TheSecrettoRaisingSmartKidsA)Ifirstbegantoinvestigatethebasisofhumanmotivation—andhowpeoplepersevereafterset
最新回复
(
0
)