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
37
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/2889000.html
相关试题推荐
[originaltext]Anewstudyhasfoundapositivecorrelationbetweenhowmuch
[originaltext]M:Hi,there!I’vecometoseetheflat.MynameisMarkAdams.W
[originaltext]M:WelcometoMoneyMatters,aweeklyprogramthathelpsyoumana
[originaltext]M:WelcometoMoneyMatters,aweeklyprogramthathelpsyoumana
[originaltext]Hello,everybody.Thelastdecadehasproventobevolatilea
[originaltext]Hello,everybody.Thelastdecadehasproventobevolatilea
[originaltext]Goodmorning.Haveyoueverboughtashirtordressonlineon
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
随机试题
CarbonCaptureHasclimatechangemadeith
Butwiththreeofhispreferredstartersinjured,andafourthhurtduringtheg
[originaltext]TodayIfoundoutthatSeattledoesn’treallygetthatmuchra
依据《城市公共设施规划规范》,下列城市分类类别中何者是准确且全面的?( )A.
材料供货商(材料供应部门)对施工生产用料单位实行()。A.项目经理责任制 B
公司债券上市交易后,发行人发生()等重大事项,且未及时披露的,深圳证券交易所可以
一般投资机会研究是一种全方位的搜索过程,需要进行广泛的调查,收集大量的数据,可分
治疗绝经前后诸证时,属脾肾阳虚者,宜选用的方剂是A.调肝汤 B.一贯煎 C.
政府对部分食品实施最低限价政策会造成的现象是()。A.刺激消费 B.出现市场
水准测量采用高差法,待定点的高程是通过()。A.调整水准仪调试得出 B.计算
最新回复
(
0
)