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
2023-07-25
22
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 concerned with the practical arts of living. Cooking is essentially a chemical process; so is the melting of metals and the administration of drugs and potions. This basic chemical knowledge, which was applied in most cases as a rule of thumb, was nevertheless dependent on previous experiment. It also served to stimulate a fundamental curiosity about the processes themselves. New information was always being gained as artisans improved techniques to gain better results.
The development of a scientific approach to chemistry was, however, hampered by several factors. The most serious problem was the vast range of material available and the consequent 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 flair. Yet in many ancient civilizations, practical tasks were primarily the province of a slave population. The thinker or philosopher stood apart from this mundane world, where the practical arts appeared to lack any intellectual content or interest.
The final problem for early chemical science was the element of secrecy. Experts in specific trades had developed their own techniques and guarded their knowledge to prevent others from stealing their livelihood. Another factor that contributed to secrecy was the esoteric nature of the knowledge of alchemists, who were trying to transform base metals into gold or were concerned with the hunt for the elixir that would bestow the blessing of eternal life. In one sense, the second of these was the more serious impediment because the records of the chemical processes that early alchemists had discovered were often written down in symbolic language intelligible to very few or in symbols that were purposely obscure. [br] The word “it” in Line 3 Para. 2 refers to which of the following?
选项
A、problem
B、material
C、difficulty
D、system
答案
B
解析
推理判断题。这个“it”指的是原料,“organizing it into some system”的意思是把这些原料组织成某种系统。把A问题,C困难. D系统答案带入句中显然不合逻辑。答案是B。
转载请注明原文地址:https://tihaiku.com/zcyy/2866696.html
相关试题推荐
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
Oceanographyhasbeendefinedas"theapplicationofallsciencestothestu
TheWestinghouseScienceTalentSearch,themostprestigioushighschoolsci
TheWestinghouseScienceTalentSearch,themostprestigioushighschoolsci
TheWestinghouseScienceTalentSearch,themostprestigioushighschoolsci
Manyscientistsaredeeplydedicatedtothedevelopmentofscience,andtheirwr
随机试题
Wemustactassoonaspossiblebecausetimeis________.A、comingoutB、runningo
【S1】[br]【S5】L该空格前为定冠词the,空格后为名词word,因此空格处应选名词、形容词、动词过去分词等作定语。原句意为“自12月26日海啸起,这
ThenumberofUS【B1】______overtheageof65wholivealoneis【B2】______to
[originaltext]M:Morning,Brenda.W:Goodmorning,Mr.Browning.M:Er,didyou
A.肝浊音界缩小 B.肝浊音界下移 C.肝浊音界上移 D.肝浊音界消失
关于生物学检测法哪项不正确A.刺激细胞增殖B.维持细胞生长C.保持细胞活性D.抑
温和的、稳定的通货膨胀对股价影响较小。通货膨胀降低了债券的必要收益率,从而引起债
具有蓝色荧光性质的化合物是A.芦丁B.穿心莲内酯C.7-羟基香豆素D.薄荷醇E.
急腹症最突出的表现为A:腹痛 B:败血症 C:休克 D:恶心、呕吐 E:
A. B. C. D.
最新回复
(
0
)