首页
登录
职称英语
Chemistry did not emerge as a science until after the scientific revolution
Chemistry did not emerge as a science until after the scientific revolution
游客
2023-08-21
10
管理
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】______. [br] 【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://tihaiku.com/zcyy/2945810.html
相关试题推荐
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
中国是率先拥有医药文化的几个国家之一。与西医相比,中医的治疗方法完全不同。经过5000年的发展,中医已经对医药学(medicalscience)、理论
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
AccordingtoapapertobepublishedinPsychologicalSciencethishasanin
随机试题
Itiscommonlyheldthatdrinkingmoderateamountsofalcoholcanreducethe
对于35KV的线路感应过电压,描述正确的是()。A.会使线路产生闪络 B.对线
已知一正方体,各边长为a,沿对角线BH作用一个力F,则该力在x1轴上投影的大小是
目前,我国商业银行资产支持证券的发行和交易场所是()。A.全国银行间债券市场
患者,男,32岁,低热、乏力、消瘦半月余。查体:心脏(-),右下侧胸部饱满,呼吸
具有逐瘀泻热功用的方剂是B.桃核承气汤 C.生化汤 D.复元活血汤 E.血
对某一类标准化对象制定的覆盖面较大的共性标准,可作为制定专用标准依据的是城乡规划
男性45岁,综合征患者,实验室检查如下:基础水平尿17-羟、17-酮水平均明显升
根据《建设工程监理规范》,项目监理机构处理施工合同争议时应进行的工作有( )。A
卫生陶瓷分为瓷质卫生陶瓷和炻陶质卫生陶瓷,其中瓷质卫生陶瓷的吸水率()。A.E
最新回复
(
0
)