首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The heart pumps blood in two directions. B、Time blood is circulated round the body in one direction only by the pumping action
A、The heart pumps blood in two directions. B、Time blood is circulated round the body in one direction only by the pumping action
admin
2010-01-26
97
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 coloured 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、Time 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
文中可以听到:He found out that the blood is circulated round the body in one direction only by the pumping action of the heart.由此可选定B。
转载请注明原文地址:https://www.kaotiyun.com/show/ZAdK777K
0
大学英语六级
相关试题推荐
Accordingtotherecent"Plansfor2004"survey,mostpeopleareunhappywiththeircurrentjobs.MaryLynMillerherselfwaso
A、TheShoppingmallhasbeendesertedrecently.B、Shopperscanonlyfindgoodstoresinthemall.C、Lotsofpeoplemovedoutof
Whatisthepassagemainlyabout?Howdoesindoorheatingaffectourlife?
Thispassagegivesageneraldescriptionofwhyrecessionsoccurandhowtheymakeacountry’seconomyworse.Whenthedemandf
A、Theweaknessofthepricesystem.B、Thecomplexitiesofthepricesystem.C、Credittermsintransactions.D、Resourceallocatio
A、On16thFebruary.B、On15thFebruary.C、On17thFebruary.D、On14thFebruary.DAssumethatnextChineseNewYear’sDayison1
Allthelocalgovernmentbodiesaresimilarintheirlackofrightsto______.Whichofthefollowingistrueaboutthelocalg
Technically,anysubstanceotherthanfoodthataltersourbodilyormentalfunctioningisadrug.Manypeoplemistakenbelieve
Theideaof______mightworsentheproblemofglobalwarmingisdifferenttothetraditionalideathatplantingtreescanslow
A、£6.B、£16.C、£60.D、£66.B本题考数字。对话中提到sixmonths时的一句话是“Acardforsixmonthsissixteenpounds.”所以B为正确答案。
随机试题
社会服务机构通常是指由政府、社会团体或个人兴办的,通过(),为特定的服务对象提供服务的非营利组织。
“宋人或得玉,獻諸子罕”句中“或”的词性和意义是()
越鞠丸的证治要点是枳实薤白桂枝汤的证治要点是
施工企业从银行借款30万元用作工程的预付款担保,该借款产生的利息属于()。
年薪制模型的构成包括()。
下列是经营管理部主要职责的是()。
新闻媒体应对不同类别的突发事件,分类报道,下列关于对突发事件报道的说法错误的是()。
下列选项中关于经济基础和上层建筑的相互关系,正确的有()
e-xsinnxdx=__________。
下列叙述中错误的是()。
最新回复
(
0
)