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
Anyone who has ridden on a railroad train knows how rapidly another train【C1】______by when it is travelling in the【C2】______dire
Anyone who has ridden on a railroad train knows how rapidly another train【C1】______by when it is travelling in the【C2】______dire
admin
2016-11-13
36
问题
Anyone who has ridden on a railroad train knows how rapidly another train【C1】______by when it is travelling in the【C2】______direction and conversely how it may look almost【C3】______when it is moving in the same direction.【C4】______a train at a station starts to move forward【C5】______gently that passengers feels no backward movement【C6】______. Then if they happened to【C7】______the window and see another train slide past on the next track, they have no way of knowing【C8】______train is in motion and which is at rest;【C9】______can they tell how fast either one is moving or in which direction. The only way they can judge their【C10】______is by looking out the other side of the car for some fixed body of reference【C11】______the station platform or a single light. Newton was【C12】______these tricks of motion, only he thought in terms of ships. He knew that on a calm day at sea a sailor can shave himself or drink soup as【C13】______as when his ship is lying motionless in harbor. The water in his basin, the soup in his bowl, will remain【C14】______whether the ship is making five knots, fifteen knots or twety-five knots. So【C15】______he looks hard at the sea it will be【C16】______for him to know how fast his ship is moving or indeed if it is moving at all. Of course, if the sea should get rough or the ship changes course suddenly, 【C17】______he will sense his state of motion. But even supposing that we have the idealized conditions of a glass calm sea and a silent ship, nothing that happens below decks, no amount of observation or mechanical experiment, performed inside the ship, will reveal its velocity through the sea. The physical【C18】______based on these facts was formulated by Newton in 1687. "The motions of bodies included in a given space, " he wrote, "are the same【C19】______themselves, whether that space is at rest or moves uniformly【C20】______in a straight line. "
【C15】
选项
A、when
B、while
C、unless
D、since
答案
C
解析
根据句子的意思,可知此处需要表示条件的连词unless,意为“如果不”,“除非”。
转载请注明原文地址:https://jikaoti.com/ti/CPSGFFFM
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Anyonewhohasriddenonarailroadtrainknowshowrapidlyanothertrain【C1】______bywhenitistravellinginthe【C2】______dire
Anyonewhohasriddenonarailroadtrainknowshowrapidlyanothertrain【C1】______bywhenitistravellinginthe【C2】______dire
Sixteenyearsago,EileenDoyle’shusband,anengineer,tookhisfourchildrenupforanearlymorningcupoftea,packedasmal
Theageofgildedyouthisover.Today’sunderthirtiesarethefirstgenerationforacenturywhocanexpectalowerlivingsta
Honeybeescannotlivealone.Theirbodystructureandinstinctsequipthemforlifeinacolony(群居)orcommunity,wheretheyhave
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwichtheycana
Livingisrisky.Crossingtheroad,drivingacar,flying,swallowinganaspirintabletoreatingachickensandwichtheycana
Farmersareallowedtogrowsmallgardensoftheirownandtheyselltheirvegetables______theblackmarket.
Heisastudentofgreatintelligenceanddiligence.______,heisatopstudentintheclass.
Whatshouldyoudo,forexample,ifyoufindoutthatunderthefertilefieldsofafarmingcommunitythereisathickbedofco
随机试题
患者女,52岁。踝关节骨折,石膏外固定10周,X线显示骨折线模糊,有连续性骨痂通过骨折线。影响骨折愈合的因素不包括
在蜡疗中,下列哪种情况不需降低温度,避免过热
在某市区拟建一大型公共建筑。投资主管部门委托某咨询单位对可能引发群体性社会事件的风险因素进行评估论证。咨询单位的项目经理决定采用个人访谈方式收集相关资料,并就此对参与资料收集工作的项目组成员提出下列要求:(1)个人访谈必须按照既定问题访谈,对特定人群调查
下列各项中,不属于资源税纳税人的是()。
法人的民事权利能力和民事行为能力,从法人()时产生。
宋太祖创立的刑罚是()
NetworkInformationSafetyinSchoolUniversityletterstostudentsandalumniareusuallycheerful.ButtheUniversityofC
•YouwillhearpartofaninterviewbetweenheadofLeoBurnettEntertainmentandaninterviewer.•Foreachquestion23—30,mark
Lookatthenotesbelow.Youwillhearamancallinghiscompany’slegaldepartmentaboutemploymentcontracts.
Completethenotesbelow.WriteONEWORDAND/ORANUMBERforeachanswer.ThingstodobeforewegoExam
最新回复
(
0
)