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
2023-09-12
31
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 inching 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 bold word" it" refers to which of the following?
选项
A、Problem.
B、Material.
C、Difficulty,
D、System.
答案
B
解析
做这类题目时,首先找到该代词所在的位置,并把上下文的句子仔细研读。它们所提供的线索和提示会告诉我们这个陌生单词的意思。特别是该代词前面的名词短语或从句。一般来说,这类题目的答案都能在同一句话的主语或宾语,或者在前一句话的主语和宾语中找到。仔细阅读完前面的句子后,我们可以得知这里it指的是material。
转载请注明原文地址:https://tihaiku.com/zcyy/3006501.html
相关试题推荐
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
Itishardtopredicthowscienceisgoingtoturnout,andifitisreally
Controversyeruptedinthescientificcommunityinearly1992overtheuseo
Controversyeruptedinthescientificcommunityinearly1992overtheuseo
随机试题
Menwhoexerciseoftenarelesslikelytodiefromcancerthanthosewho【C1】
Itseemsthattheonlytimeathomedadsattracteyesisthattheyarecriticize
AvoidPlagiarism1.论文抄袭(plagiarism)现象频频出现2.由此带来的问题3.如何杜绝这种状况Plagiarismhas
试回答反光膜的色度性能测试问题。(2)采用《标准照明体和几何条件》(GB/T39
下列各项中不属于资产负债表宾栏中的机构部门是()。A.非金融企业部门 B.金融
免疫制剂应用时应注意的问题不包括A.冷链系统管理 B.预防接种记录 C.器械
每个基金单位享有的分配权相同。()
案例一(2): 求助者:谢谢您!那我跟您说说我的情况吧。 心理咨询师:好的。
根据现行规定,报关企业向海关注册登记关,必须先获得注册登记许可。申请人向所在地直
按照国际惯例,承包商可索赔的材料费包括()。A.由于承包商管理不善,造成材料损
最新回复
(
0
)