问题 填空题

家庭照明电路的电压是 ▲ V,不高于 ▲ V的电压对人体是安全的.平常所说的几度电的“度”,实际上是 ▲ 的单位,1 kW·h= ▲ J.

答案

考点:

专题:计算题.

分析:根据常见电源电压以及电能的单位及单位间的进率进行填空.

解答:解:我国家庭电路的电压是220V,对人体的安全电压不高于36V.电能的单位有度、kW?h、J;1kW?h=3.6×106J.

故答案为:220,36,电能,3.6×106

点评:要记住一些生活中常见的电压值以及各物理量的单位以及单位换算.

完形填空
Pete Rose was a great baseball player. Though I have never met him, he taught me something    that changed my life.
  Pete was being    in spring training the year he was about to break Ty Cobb's all-time hits record. Suddenly one reporter asked him, "Pete, you only need 78 hits to reach your nearest   . How many at-bats(击球)do you think it'll take you to get the 78 hits?" Without hesitation, Pete just   at the reporter and said,"78." The reporter yelled back, "Ah, come on, Pete, you don't think you'll get 78 hits in 78 at-bats, do you?"
  Mr. Rose calmly   his philosophy(哲理,观点) with the reporters who were   waiting for his reply to the claim. "Every time I   up to the plate(击球区),I    to get a hit!   I have it in mind,I have no right to step into the batter's(击球手)box! It is    expectation that has enabled me to get all of the hits in the first place."
  When I thought about Pete Rose's     and how it applied to everyday  ,I felt a little embarrassed. As a business person,I was hoping to increase my   . As a father,l was hoping to be a good dad. As a married man,I was hoping to be a good husband. The truth was that I was a fairly good salesperson,I was not so    a father,and I was an okay husband. I immediately decided that being okay was not   ! I wanted to be a great salesperson,a great father and a great husband. I   my attitude to a positive one,and the results were   .I was fortunate enough to win a few sales trips,I won Coach of the Year in my     baseball league,and I share a loving relationship with my wife,Karen,with whom I am     to enjoy the rest of my life!
    ,Mr. Rose!
小题1:
A.reliableB.enjoyableC.valuableD.unbelievable
小题2:
A.admiredB.interviewedC.watchedD.trained
小题3:
A.decisionB.recordC.levelD.goal
小题4:
A.staredB.shoutedC.glaredD.pointed
小题5:
A.enjoyedB.sharedC.discussedD.reviewed
小题6:
A.anxiouslyB.nervouslyC.cheerfullyD.impatiently
小题7:
A.climb     B.jumpC.driveD.step
小题8:
A.seemB.fail       C.expect     D.compete
小题9:
A.ThoughB.UnlessC.BecauseD.When
小题10:
A.suddenB.simpleC.positiveD.considerate
小题11:
A.planB.ideaC.abilityD.behaviour
小题12:
A.agendaB.exerciseC.workD.life
小题13:
A.salesB.skillsC.experiencesD.experiments
小题14:
A.wiseB.kindC.meanD.bad
小题15:
A.explicitB.helpfulC.enoughD.practical
小题16:
A.changedB.addedC.devotedD.contributed
小题17:
A.hopefulB.amazingC.funnyD.disappointing
小题18:
A.son'sB.wife'sC.friend's   D.customer's
小题19:
A.supposedB.expectedC.encouragedD.determined
小题20:
A.Good luckB.Best regardsC.ThanksD.Congratulations
单项选择题