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、A round piece of stone. B、A heavy log. C、Two slices of log connected at their centers by a strong stick. D、A piece of metal. C
A、A round piece of stone. B、A heavy log. C、Two slices of log connected at their centers by a strong stick. D、A piece of metal. C
admin
2013-03-09
95
问题
Man’s first real invention, and one of the most important inventions in history, was the wheel. All transportation and every machine in the world depend on it. The wheel is the simplest yet perhaps the most remarkable of all inventions. Because there are no wheels in nature, no living things was ever created with wheels. How, then, did man come to invent the wheel?
Perhaps some early hunters found that they could roll the body of a heavy animal through the forest on logs mole easily than they could carry it. However, the logs themselves weighed a lot. It must have taken a great prehistoric thinker to imagine two thin slices of log connected at their centers by a strong stick. This would roll along just as the logs did, yet be much lighter and easier to handle. Thus the wheel and axle came into being, and with them the first carts.
选项
A、A round piece of stone.
B、A heavy log.
C、Two slices of log connected at their centers by a strong stick.
D、A piece of metal.
答案
C
解析
According to this passage,what might be the first wheel?
转载请注明原文地址:https://www.kaotiyun.com/show/1wI7777K
0
大学英语六级
相关试题推荐
TheEndoftheCashEraInthespringAdamSmithwillreplaceSirEdwardElgarasthefaceonBritain’s£20note.Thefirst
A、MoreandmorepeopleareusedtotheInternet.B、PostcardsareinthedangerofextinctioninBritain.C、Cellphonesarebecom
Inthepast,oneofthebiggestdisadvantagesofmachineshasbeentheirinabilitytoworkonamicro-scale.Forexample,doctor
Panicattackvictimsshowthefollowingsymptoms:theyoftenbecomeeasilyfrightenedorfeeluneasyinsituationswherepeoplen
Thewordscienceisheardsoofteninmoderntimesthatalmosteverybodyhassomenotionofitsmeaning.Ontheotherhand,its
Thewordscienceisheardsoofteninmoderntimesthatalmosteverybodyhassomenotionofitsmeaning.Ontheotherhand,its
A、Toshowhowdependentmenareonaparticularfood.B、Toshowhowprimitivethedietofsomepeopleis.C、Toshowwhatdiffere
A、Askhisprofessortowritearecommendationletter.B、Providetheschoolhisscores.C、Buildstrongself-confidence.D、Takea
Formillionsofyears,thechangesinEarth’sclimatehavebeendrivenbyforcesofnature.Butforthelastcenturyandahalf,
Formillionsofyears,thechangesinEarth’sclimatehavebeendrivenbyforcesofnature.Butforthelastcenturyandahalf,
随机试题
下列句子中,属于兼语句的有()。
A.摘除白内障后在眼内植入物B.采用高度正球面镜片进行矫正C.可改变角膜前表面的屈折力,使其接近正视D.摘除白内障,但保留晶状体后囊膜E.将包括囊膜在内的晶状体完整摘除人工晶状体
急性乳腺炎的主要病因是
过氧乙酸消毒是将过氧乙酸稀释成0.5%~1.0%水溶液,加热蒸发,在__________相对湿度,室温下,过氧乙酸用量按1g/m3计算,熏蒸时间2h
患者抑郁、厌世,以至自杀的状况属于角色行为
下列关于高强度螺栓连接要求的说法中,错误的是()。
以下是2017年全国资金流量表实物交易部分:请根据以上资料回答下列问题。按照上述资金流量表提供的信息,2017年我国生产法GDP与支出法GDP差值为()亿元。
传统理论认为,()将缩小市场范围,加大金融中介的规模。
Writeanoteofabout50—60wordsbasedonthefollowingsituation:Emerson’spaperranksonthetopandearnsfameforthe
Oneresearchhasshownthatpublicschoolteachersreceivesalariesalmostthesameasprivatesectorworkerswhoscorethesame
最新回复
(
0
)