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
3
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、The heart pumps blood in two directions.
B、The blood is circulated round the body in one direction only by the pumping action of the heart.
C、The blood moved with a backward and forward motion.
D、The heart pumps blood in all directions.
答案
B
解析
What did William Harvey find out in 1628?
转载请注明原文地址:https://tihaiku.com/zcyy/3505260.html
相关试题推荐
Formuchofthepastdecade,AmericanandBritishscientistshavebeenannoy
Formuchofthepastdecade,AmericanandBritishscientistshavebeenannoy
Formuchofthepastdecade,AmericanandBritishscientistshavebeenannoy
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
[originaltext]Goodmorning,class.Mytopictodayishowtofeedahungryw
[originaltext]Emotionsareanessentialandinseparablepartofourconscio
[originaltext]WhileithaslongbeenapracticeinAsiancountries,manype
[originaltext]WhileithaslongbeenapracticeinAsiancountries,manype
随机试题
Whichcompanyismentionedasasponsorofthemovie?[originaltext]M:Hi,W,I
Hermotherwouldbecominginsoon,andwouldexpecttofind______(土豆去了皮,饭桌摆好了
实施科教兴国战略,是要把加速科技进步放在经济社会发展的关键地位,使经济建设真正转
甲公司2019年的每股收益为6元,股利支付率为40%,预计从2020年开始将保持
下列不是PowerPoint视图方式的是( )A.大纲视图 B.页面视图
关于药物功效的叙述不妥的是( ) A.紫河车为气血阴阳并补之品 B.鹿茸专
根据《期货市场客户开户管理规定》的规定,期货公司应当向()提交客户交易编码申请
北京市海淀区的甲公司向北京市朝阳区的乙公司开具了一张100万元的汇票以支付货款
名址系统、电子化支局系统、商函投递系统属于邮政综合计算机网应用系统中的()。A:
发生索赔事项,索赔费用的计算方法有()等。A.综合费用法 B.实际费用法
最新回复
(
0
)