问题 选择题

下图为测定反应速度开始和结束时手的位置。据此推算,你的反应速度约为(  )

A.1 cm

B.3 cm

C.4 cm

D.5 cm

答案

答案:C

题目分析:在《测定反应速度》探究活动中,某小组的具体做法如图,尺子上刻度值为“0”的一端朝下,然后被测同学拇指和食指准备夹住,不能接触,放手看被测同学抓住的距离就可以了,刻度值越大,反应速度越慢,刻度值越小,反应速度越快,这样刻度值的大小就可以反应被测同学的反应速度,图中开始时大拇指在0刻度的上方,因此结束时应该从大拇指的下方读数,故尺子上能够反映反应速度的刻度值4cm。

点评:此题较新颖,难度中等,解答此类题目的关键是熟记反应速度可以用刻度值表示,要注意图中大拇指的位置,开始时大拇指在0刻度的上方,因此结束时应该从大拇指的下方读数,反之应从下方度数。

选择题
完形填空
I am a social worker. I wanted to tell everyone about my very dear friend who passed away a few months ago.
I met him many years ago while doing my internship (实习)in the county prison. He was   __    a program he had designed to help prisoners with drug and alcohol problems. He was always        new ways to bring hope and help to these men and their       .
One of his favorite        was the Toy Drive he would run every Christmas for the children of the prisoners. He did this for twenty years        his sudden death. As last Christmas       , I decided that this tradition had to be       , for the children as well as the        of my friend.
But the file where he kept the names of the people who had helped him over the years had gone       . I had to start anew(重新)and with very little       ! I started making phones calls, explaining about the project and my       . I prayed every night that the event would,       , be worthy of my friend.
To my great       , individuals, churches and businesses began to come on board and,  __   , I had enough toys to give to all the children of the prisoners with some left over for the local community       !
When Christmas Eve finally arrived, I felt very happy, thinking I had done all I could do and reflecting on what a(n)      it had been for me. I was bagging up the remaining toys        if there was anyone left who might like them. Then my phone rang.
It was my daughter. She        to explain about a woman she knew in Kentucky who had five children, one seriously ill, no husband, no heating in the home, no toys!
Ohh--how could we not?
My daughter and I drove all night, from New York to Kentucky, and those children woke up in a nice warm house with plenty of       !
My friend’s        of kindness lived on that year, reaching all the way to Kentucky!
小题1:
A.recordingB.directingC.attendingD.improving
小题2:
A.coming up withB.catching up withC.keeping up withD.putting up with
小题3:
A.companyB.familyC.groupD.club
小题4:
A.hobbiesB.sportsC.eventsD.games
小题5:
A.untilB.afterC.becauseD.since
小题6:
A.finishedB.arrivedC.followedD.approached
小题7:
A.lived onB.lived outC.carried onD.carried out
小题8:
A.pleasureB.memoryC.benefitD.favor
小题9:
A.extraB.hidingC.activeD.missing
小题10:
A.energyB.timeC.pressureD.confidence
小题11:
A.difficultiesB.impressionC.atmosphereD.importance
小题12:
A.howeverB.thoughC.otherwiseD.somehow
小题13:
A.disappointmentB.curiosityC.thoughtD.relief
小题14:
A.absolutelyB.eventuallyC.generallyD.occasionally
小题15:
A.as wellB.at firstC.in particularD.once more
小题16:
A.pityB.honorC.burdenD.discovery
小题17:
A.wonderingB.realizingC.predictingD.evaluating
小题18:
A.cameB.droveC.calledD.returned
小题19:
A.candiesB.flowersC.chocolatesD.toys
小题20:
A.courageB.spiritC.positionD.attention