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
专升本
Man’s first real invention, and one of the most important inventions in history, was the wheel. All transportation and every mac
Man’s first real invention, and one of the most important inventions in history, was the wheel. All transportation and every mac
admin
2016-08-13
45
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 thing was ever created with wheels. How, then, did man come to invent the wheel? Perhaps some early hunters found that they could roll the carcass of a heavy animal through the forest on logs more 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 string 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.
The wheel is called______.
选项
A、simple
B、complicated
C、strange
D、unusual
答案
D
解析
参考文章第一段,其中说到,“轮子在自然界中是不存在的”,所以最能说明轮子的就是“unusual”。
转载请注明原文地址:https://kaotiyun.com/show/vEiC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Americaisacountryonthemove.Inunheardofnumbers,peopleofallagesareexercisingtheirwaytobetterhealth.According
Youhavestudiedhard,andthedayhas【21】comewhenyoumustwriteyourexam.Trytoarriveafewminutesbeforethe【22】starts.
Amanoncesaidhowuselessitwastoputadvertisementsinthenewspapers."Lastweek,"saidbe,"myumbrellawasstolenfroma
Doyoufindgettingupinthemorningsodifficultthatitispainful?Thismightbecalledlaziness,butDr.Kleitmanhasanew
Itwaswonderfulupthere.Ralphwantedtoreachoutand【21】astar,forthey【22】soclose.Hecouldseetheearthgettingsmaller
Aresomepeoplebornclever,andothersbornstupid?Orisintelligencedevelopedbyourenvironmentandourexperiences?Strang
ItiswellknownthatThomasEdison______theelectriclamp.
Foryears,theTobaccoInstitute1hastriedunsuccessfullytorefute(反驳)thechargebyhealthexpertsthatcigarettesmokingcan
A.We’llshowyouourphotoswhenweareback.B.Wearegoingwithourteachers.C.WearegoingtoParis.D.Whenareyouleav
Mary,alongwithherparents,______toParis.
随机试题
男性,25岁。因挤压伤后10小时急诊入院。伤后无尿,经补液,利尿无效,血BUN25mmol/L,Cr560ummol/L,CO2CP15mmol/L,血钾6.0mmol/L。
A.左心功能不全B.大量心包积液C.心房颤动D.肥厚型梗阻性心肌病E.主动脉瓣关闭不全奇脉可见于
患者,女,63岁,因头晕入院,测血压为160/100mmHg,医嘱给予硝苯地平和普萘洛尔。硝苯地平引起的上述不良反应,按照传统分类属于
图5-118所示,细长压杆两端在x-y、x-z平面内的约束条件相同,为稳定承载能力,对横截面积相等的同一种材料,合理的截面形式。正确答案是()。
社会治安综合治理的要点有()。
法律的溯及力又称法律的溯及既往的效力。 ( )
在下面关于PC机标准接口技术的叙述中,错误的是( )。
(1)将自由表rate_exchange和currency_s1添加到rate数据库中。(2)为表rate_exchange建立一个主索引,为表currency_s1建立一个普通索引(升序),两个索引的索引名和索引表达式均为“外
让控件获得焦点,使其成为活动对象的方法是
一个字长为8位的无符号二进制整数能表示的十进制数值范围是______。
最新回复
(
0
)