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
37
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】______.
【B10】
选项
答案
livelihood
解析
空格位于物主代词their之后,可知此处应填入名词,livelihood意为“生计,谋生”。
转载请注明原文地址:https://jikaoti.com/ti/Bm6FFFFM
0
大学英语六级
相关试题推荐
Ourbodiesexperienceanebbandflowofenergythroughouttheday.Thisiscalledacircadianrhythm,andithasbeenstudied【C
A、Theyfoundthemother.B、Someonewantedtoadoptthebaby.C、Thebabywashealthy.D、Theyknewthenameofthebaby.C原文提及“但他们
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
InancienttimestheChinesefarmedforaliving,andalwayslivedontheland【B1】______theirancestorsandnevermovedwithout
A、Justholdoutone’shands.B、Putone’sthumbupwards.C、Haveasignwithbiglettersonit.D、Bringfewerluggagesandbealon
StatesExperimentwithOut-of-ClassroomLearning[A]AttheendofAugust,mostofOhio’steenagerswillshakeofftheirsummerti
Playistheprinciplebusinessofchildhood,andmoreandmoreinrecentyears’researchhasshownthegreatimportanceofplay
Childrencanspendhoursadaylookingatcomputerscreensandotherdigitaldevices.Someeyecareprofessionalssayallthats
随机试题
索引非顺序文件是指()
(2007年第22题)下列关于睾丸生理功能的叙述,正确的是
A.氨溴索B.乙酰半胱氨酸C.可待因D.苯丙哌林E.右美沙芬代谢产物有吗啡的是()。
张某在市区内开办了一家餐馆和一个副食加工店,均为个人独资。2014年初,自行核算餐馆2013年度销售收入为400000元,支出合计360000元;副食加工店2013年度销售收入为800000元,支出合计650000元。后经聘请的会计师事务所审计,餐
甲企业于2016年1月1日向银行借入一笔生产经营用短期借款,共计600000元,期限为9个月,年利率为5%。根据与银行签署的借款协议,该项借款的本金到期后一次归还;利息分月预提,按季支付。要求:编制甲企业1月末计提利息的会计分录。
导游带领游客到高原旅游的第一个晚上应劝导游客早休息,多睡眠。()
一位教师刚走进教室时,刚刚推开门,忽然黑板擦掉了下来,刚好砸到教师的脸上,全班同学一片哗然,这分明是某个学生搞的恶作剧。下列老师的处理方式中最恰当的一项是()。
二十世纪对于世界和中国而言,都是历史上变动最剧烈的时代,建立在农业文明基础上的传统社会已经消失,整个人类都在大跨步地迈进现代社会,时代变动超出任何预言家的预测和理论家的设计,使我们常有________之感。填入画横线部分最恰当的一项是:
Womenworeuncomfortablebathingclothesbecause______.Asuitabletitleforthispassagewouldbe______.
Smokingisverypopularwithpeople.【C1】______ofthesmokersbelievethatsmokingcan【C2】______theirnerveshardenedwithsoci
最新回复
(
0
)