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
Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slow
Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slow
admin
2015-06-07
61
问题
Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slowly and laboriously. But chemical knowledge is as old as history,
being almost entirely【B1】______the practical arts of living.Cooking is【B2】______a chemical process; so is the melting of metals and the administration of drugs and poisons. This basic chemical knowledge, which was applied in most cases as a rule of thumb,was nevertheless【B3】______previous experiment.It also served to【B4】______a fundamental curiosity about the processes themselves. New information was always being gained as artisans (工匠) improved techniques to gain better results. The develop ment of a scientific approach to chemistry was, however,【B5】______by several fac tors.The most serious problem was the vast range of material available and the【B6】______difficulty of organizing it into some system. In addition, there were social and intellectual difficulties: chemistry is nothing if not practical; those who practice it must use their hands, they must have a certain practical talent. Yet in many ancient【B7】______,practical tasks were primarily the province of a slave population. The thinker or philosopher【B8】______ this earthly world, where the practical arts appeared to lack any intellec tual content or interest. The final problem for early chemical science was the element of secrecy.Experts in【B9】______trades had developed their own techniques and guarded their knowledge to prevent others from stealing their【B10】______.
【B3】
选项
答案
dependent on
解析
dependent on意为“依靠的”,本句意为“这些基本化学知识在大多数情况下只是粗糙地运用,然而这些基本知识依靠的是前人的实验”。
转载请注明原文地址:https://www.kaotiyun.com/show/tFQ7777K
0
大学英语六级
相关试题推荐
Thatalackofwealthalltoooftentranslatesintopoorhealthmayseempainfullyobvious.Butnowareviewofhealthinequalit
Thatalackofwealthalltoooftentranslatesintopoorhealthmayseempainfullyobvious.Butnowareviewofhealthinequalit
Thatalackofwealthalltoooftentranslatesintopoorhealthmayseempainfullyobvious.Butnowareviewofhealthinequalit
Ourbodiesexperienceanebbandflowofenergythroughouttheday.Thisiscalledacircadianrhythm,andithasbeenstudied【C
Ourbodiesexperienceanebbandflowofenergythroughouttheday.Thisiscalledacircadianrhythm,andithasbeenstudied【C
A、Itwasmisleading.B、Itwasratherboring.C、Itwasenjoyable.D、Itwasjustso-so.C女士说她以前从未听过如此有趣的演讲,男士说Yes,wasn’titmarvel
InancienttimestheChinesefarmedforaliving,andalwayslivedontheland【B1】______theirancestorsandnevermovedwithout
BoththeSenateandHousehealthcarebillsproposeincentivestoboostcorporatewellnessprogramsthataimtohelpemployeess
Inthethrillingprogressiveyearsoftheearly20thcentury,fewthingsweremoreattractivethanthepromiseofscientifickno
Childrencanspendhoursadaylookingatcomputerscreensandotherdigitaldevices.Someeyecareprofessionalssayallthats
随机试题
整体式滑动轴承修理,一般采用金属喷镀法,对大型或贵重材料的轴泵采用更新的方法。()
设f(x)=∫0x[∫0tln(1+u2)du]dt,求fˊˊ(1).
患者,男,35岁。2小时前不慎由2米高的桥上跌下,左小腿肿胀明显,皮肤无开放性裂伤,X线片示左胫骨中下1/3横行骨折。处理方案中较为正确的是
下列物质不能作混悬剂助悬剂的是
因果分析图法又称()。
根据《中华人民共和国会计法》的规定,从事会计工作的人员应当具备的资格证书是()。
唐太宗时期,政治清明,经济繁荣,国力强盛,史称()。
旅游意外保险的受益人包括()。
知识就等同于智力。
阅读下列材料,回答问题。我在单位工作很有成就感,因此,在日常的生活和工作中,我不怕见父母,不怕见邻居,不怕见同事和领导。但是就怕见我孩子的四年级老师。都怪我的儿子不争气,也使我总是挨这位老师的训。我儿子爱说爱动,在课堂上时常有“违反”纪律的现象,
最新回复
(
0
)