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
functions
functions
admin
2010-06-30
46
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 or 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
答案
functions
解析
转载请注明原文地址:https://kaotiyun.com/show/OFJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
ForRichardLeakey,headoftheKenyaWildlifeService(KWS),conservationoftenseemstobeacontinuationofwarbyothermeans
Carmakershavelongusedsextoselltheirproducts.Recently,however,bothBMWandRenaulthavebasedtheirlatestEuropeanm
Manypeoplethinkthatnowadayspeoplearebeingsubjectedtomoreandmorepressureintheirwork,andthusarehavinglessan
theUnitedStates
Whydopeoplealwaysspendmoremoneythanplannedinsupermarkets?
Themostobviouspurposeofadvertisingistoinformtheconsumerofavailableproductsorservices.Thesecond【C1】______istos
Youhavereadanarticleinamagazinewhichstates,"TheInternethasnowbecomeanimportantlearningtoolforchildren,expo
Inrecentyears,therehasbeenanincreasingawarenessoftheinadequaciesofthejudicialsystemintheUnitedStates.Costsa
"Themoregadgetsthereare,the【C1】______thingsseemtoget."saidHonoreErvin,co-authorofTheEtiquetteGirls:ThingsYouN
A=HallucinogensB=CocaineC=AlcoholWhichdrug...mayslowdownbodyfunctions?【P1】______canleadtothedrivers’dis
随机试题
下列属于原始凭证的是()
期货交易所有( )行为之一的,责令改正,给予警告,没收违法所得,直接负责的主管人员和其它直接责任人员给予纪律处分,可以并处1万元以上10万元以下的罚款。
综合绩效评价是综合分析的一种,一般是站在()的角度进行的。
汉代著名辞赋家、成都人司马相如的代表作是()。
化学反应:是指一种或多种物质改变化学组成、性质和特征成为与原来不相同的另一种或多种物质的变化。根据上述定义,下列变化不属于化学反应的是()。
下列名言中体现“天下兴亡,匹夫有责”的优良传统的是()
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
在某页式存储管理系统中,页面大小为1KB,物理内存为256MB,进程地址空间为512MB,只考虑一级页表,则页表长度(页表项个数)为()。
开卷有益,是古人奖励读书的一句成语。从前读到一册坏书,读后每觉得为古人所欺;现在多了一点智识,反过来又觉得古人的不欺我了。总之,好书读了,原有所得,就是可以知道它的好处在哪里。可是坏书读了,而知道它的坏的原因与地方,岂不也是一得?从前孔子说的“三人行,必有
Asadevelopingcountry,wemustkeep______withtherapiddevelopmentoftheworldeconomy.
最新回复
(
0
)