首页
登录
职称英语
[originaltext] As is known to all, scientists and philosophers had studied t
[originaltext] As is known to all, scientists and philosophers had studied t
游客
2023-08-01
46
管理
问题
As is known to all, scientists and philosophers had studied the human body and its functions from very early times. Unfortunately, many of the ideas and theories, correct and incorrect, were accepted without question for a great number of years. But by the 16th century, knowledge gained through chemical experiments was beginning to make some people think more deeply about how the human body works.
A most important medical discovery was made by William Harvey in 1628. He found out that the blood is circulated round the body in one direction only by the pumping action of the heart. It had previously been incorrectly thought that the blood moved with a backward and forward motion.
Early in the 17th century a new instrument came into use that was to open up a whole new area in the study of medical and scientific matters. This was the microscope.
The first instruments were not very efficient. They were able to magnify only a very small part of the object and this was always surrounded by rings of colored light. Nevertheless a great step forward had been taken which was of vital importance for future research and development.
选项
A、Artificial hearts.
B、Telescopes.
C、Microscopes.
D、Radio telescopes.
答案
C
解析
What instrument gave a great help to the study of medical and scientific matters?
转载请注明原文地址:https://tihaiku.com/zcyy/2889001.html
相关试题推荐
[originaltext]Hello,everyone.Wewilltalkaboutthetechnologytoday.You
[originaltext]Hello,everyone.Wewilltalkaboutthetechnologytoday.You
[originaltext]Goodmorning,everyone.I’mgoingtotalkabouttheenvironme
[originaltext]Moderator:Goodevening,ladiesandgentlemen.It’smygr
[originaltext]Aswithsomanyotherthingsinlife,exercisemayworkbest
[originaltext]Aswithsomanyotherthingsinlife,exercisemayworkbest
[originaltext]Aswithsomanyotherthingsinlife,exercisemayworkbest
[originaltext]Anewsystemhasbeendevelopedtomeasurethehealthofthe
[originaltext]W:Hi,Jim.Whatareyoudoing?M:Oh,hi,Linda.I’mworkingon
[originaltext]W:Hi,Jim.Whatareyoudoing?M:Oh,hi,Linda.I’mworkingon
随机试题
Hisrequest______uscompletelybysurprise.A、shookB、madeC、tookD、leftC固定搭配题
A.xy B.2xy C.xy+1/8 D.xy+1
综合布线系统中,()是连接用户终端设备到信息插座之间的子系统,(请作答此空)是用
内部审计师在以下哪种情况下有责任向管理高层和审计委员会报告舞弊情况?A.在合理程
下列各种类型药物中哪一种具有降血脂作用A.强心苷类 B.血管紧张素转化酶抑制剂
社会工作者小王计划对失学儿童群体进行研究并决定采取定性研究方法。此研究方法应侧重
大陆架,简单地说,是在靠近大陆的浅海地区,大陆向海洋的延伸部分,深度一般不超过(
下列关于风险的说法中,错误的是()。A.风险既可能带来收益,也可能造成损失 B
信托的定义体现了()。A.信托财产的独立性 B.权利主体与利益主体相分离 C
下列关于实物资产清查的表述中,正确的有( )。A.要从数量上和质量上进行严格的清
最新回复
(
0
)