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
2024-03-04
4
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://www.tihaiku.com/zcyy/3505261.html
相关试题推荐
[originaltext]Duringa1995roofcollapse,afirefighternamedDonaldHerbe
[originaltext]Duringa1995roofcollapse,afirefighternamedDonaldHerbe
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]AlmostallstatesinAmericahaveastatefair.Theylastfor
[originaltext]Manypeoplecatchacoldinthespringtimeorfall.Itmakes
[originaltext]W:Hey,Bob,guesswhat?I’mgoingtovisitQuebecnextsummer.[
[originaltext]W:Hey,Bob,guesswhat?I’mgoingtovisitQuebecnextsummer.[
[originaltext]Ifyouvisitabigcityanywhereintheworld,youwillproba
[originaltext]Ifyouvisitabigcityanywhereintheworld,youwillproba
随机试题
A:Let’sgetthekidssomething.B:OK,butIvetoI-C-E-C-R-E-A-M-S.B’sanswer
[originaltext]AsIamsureyouareaware,historyisfullofpeoplewhower
关于锅炉房的耐火等级,下列哪一条是正确的?()A.不论何种燃料的锅炉,其锅炉
混流水轮机主要过水部件有()。A.蜗壳 B.导水叶 C.转轮
患者,女性,40岁。体检时发现甲状腺右叶一直径1.2cm大小孤立结节,无任何自觉
干呕呃逆,胃脘嘈杂,口干咽燥,舌红少苔。其证候是A.食滞胃脘 B.胃阴虚
关于商品房预售许可的办理程序,下列说法中正确的是()。A:经审查,开发企业的申请
已知作用于岩质边坡锚杆的水平拉力H1k=1140kN,锚杆倾角α=15°,锚固体
新股发行公司关于进行网上直播推介活动的公告应与其招股说明书概要(或招股意向书)同
根据有关规定,工程监理的依据包括()A、工程监理合同B、法律、法规C、有关的
最新回复
(
0
)