City Y has installed 30 parking meters at 15-foot intervals along a straight str

游客2024-01-12 53

问题 City Y has installed 30 parking meters at 15-foot intervals along a straight street. What is the number of feet between the first meter and the last meter?

选项 A、200
B、420
C、435
D、450
E、465

答案 C

解析城市Y在某条直的街道上安装了30个停车计价器(每隔15英尺一个)，问第一个计价器与最后一个计价器之间有多少英尺?
解：本题的正确答案为(C)。考生答对该题的关键在于明白只有(n+1)个元素才能隔开n个距离。第一个计价器与最后一个计价器之间有(30-1)=29个15英尺的距离，即：29×15=435

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City Y has installed 30 parking meters at 15-foot intervals along a straight str

______tiredafterahardwork,shefellintobedandwentstraighttosleep.A、F

()tiredafterahardwork,shefellintobedandwentstraighttosleep.A、Felt

W:Ray,aren’tyougoingstraighthomeafterschooltoday?M:______A、Yes,Iwo

Onlyresidentshereenjoythe______ofusingthisparkinglot.A、privilegeB、possi

Onlyresidentshereenjoythe_________ofusingthisparkinglot.A、privilegeB、po

Parkingisabigproblem,________.A、thetrafficissoB、issothetrafficC、so

Khalildrove120kilometersinacertainamountoftime.Whatwashisaveragesp

Istheperimeterofacertainrectangulargardengreaterthan50meters?(1)The

Whenacertainstretchofhighwaywasrebuiltandstraightened，thedistancealon

Arope60meterslongiscutintothreepieces(A,B,C),IfpieceAis12meter

PASSAGETWO[br]Whatistheconclusionofthispassage?Despitealltheefforts，

Thestudentisshyandhe______questionsinclass.A、daresnotaskB、doesnotd

Anyonecanborrowbooksfromthelibrary______hekeepsthemcleanandreturnsth

Ifyou’relikemostpeople,you’rewaytoosmartforadvertising.Youskipr

对年老体弱、痰量较多且无力咳痰的慢性支气管炎患者，不宜使用的药物为（）A：标准

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患者男，69岁，因头痛、头晕就诊，平静状态下测血压165/95mmHg．其他检查

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A.-1，0 B.2，3 C.4，5 D.1，1

经核准或备案的资产评估结果使用有效期为自评估基准日起()年。A:1 B:2