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
17
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
[originaltext]M:Whattimedoyouusuallyhavebreakfast?W:Around7:00,butl
A.0A B.2.5A C.0.24A D.0.2A
下列关于单代号网络图的说法中,叙述正确的有( )。A.当网络图中有多项开始工作时
重度子痫前期的诊断标准是下列哪项A.血压较基础血压高4/2kPa(30/15mm
三合诊指下列何项A.B超、阴道、腹部检查 B.腹部、阴道、直肠联合检查 C.
我在单位工作很有成就感,因此,在日常的生活和工作中,我不怕见父母,不怕见邻居,不
A.黄酮有3-OH B.黄酮有5-OH C.黄酮有3-H D.黄酮有5-H
表面活性剂对难溶性药物增溶主要是利用了A.胶团作用 B.乳化作用 C.润滑作
微粒分散体系中微粒的动力学性质表现在A:丁铎尔现象 B:布朗运动 C:电泳
2020年1-10月,我国规模以上互联网和相关服务企业(简称互联网企业)完成业务
最新回复
(
0
)