C 11.A 12.A 13.B 14.C 查看更多

 

题目列表(包括答案和解析)

如图A“观察水的沸腾”的实验探究的是:水沸腾时的现象和水沸腾的温度.图B是实验过程某一时刻的温度,此时水温是
85
85
℃.图甲、乙、丙是三位同学作出的水沸腾的图象,其中正确的是
图.

小刚同学按实验步骤进行了正确的操作,他得出的实验数据如下表所示:
时间/min 9 10 11 12 13 14 15
水温/°C 95 96 97 98 98 98 98
(1)从记录数据可得出结论是:此时水沸腾的温度是
98
98
℃.
(2)小刚发现从开始加热到沸腾的这段时间过长,造成这种现象的原因可能是(给出一种原因即可),解决的办法是
加大酒精灯火焰(或减少烧杯中水的质量)
加大酒精灯火焰(或减少烧杯中水的质量)

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There was a boy who was sent by his parents to a boarding school (寄宿学校).   36   being sent away, this boy was the   37   student in his class. He was at the top in every   38   always with high marks.
But the boy changed after   39   home and attending the boarding school. His grades started   40  . He hated being in a   41  . He was lonely all the time. And there were especially dark times when he   42   committing suicide (自杀). All of this was because he felt   43   and no one loved him.
His parents started   44   about the boy. But they even did not know what was   45   with him. So his dad decided to travel to the boarding school and   46   him.
They sat on the bank of the lake near the school. The father started asking him some casual questions about his classes, teachers and   47  . After some time his dad said, “Do you know, son, why I am here today?”
The boy answered back, “To   48   my grades?”
“No, no,” his dad replied. “I am here to tell you that you are the most   49   person for me. I want to see you   50  . I don’t care about grades. I care about you. I care about your happiness. YOU ARE MY LIFE.”
These words   51   the boy’s eyes to be filled with tears. He   52   his dad. They didn’t say anything to each other for a long time.
Now the boy had   53   he wanted. He knew there was someone on this earth who cared for him deeply. He   54   the world to someone. And today this young man is in college at the top of his class and no one has ever seen him   55  !
【小题1】
A.AfterB.BeforeC.WhenD.While
【小题2】
A.hardestB.naughtiestC.brightestD.dullest
【小题3】
A.examB.activityC.gameD.class
【小题4】
A.comingB.returningC.leavingD.reaching
【小题5】
A.risingB.increasingC.reducingD.dropping
【小题6】
A.groupB.termC.company D.party
【小题7】
A.led toB.felt likeC.thought backD.looked for
【小题8】
A.worthless B.carelessC.concernedD.annoyed
【小题9】
A.caringB.turningC.worryingD.speaking
【小题10】
A.crazyB.trueC.possibleD.wrong
【小题11】
A.talk withB.listen toC.tell toD.care about
【小题12】
A.familyB.friendsC.studyD.grades
【小题13】
A.realizeB.analyzeC.checkD.test
【小题14】
A.outstandingB.importantC.famousD.familiar
【小题15】
A.happyB.excellentC.interestedD.satisfied
【小题16】
A.causedB.wantedC.encouragedD.forced
【小题17】
A.answeredB.ignoredC.hatedD.hugged
【小题18】
A.nothingB.somethingC.everythingD.anything
【小题19】
A.showedB.meant C.intendedD.expressed
【小题20】
A.sadB.angryC.pleasantD.joyful

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如图A“观察水的沸腾”的实验探究的是:水沸腾时的现象和水沸腾的温度.图B是实验过程某一时刻的温度,此时水温是______℃.图甲、乙、丙是三位同学作出的水沸腾的图象,其中正确的是______图.

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小刚同学按实验步骤进行了正确的操作,他得出的实验数据如下表所示:
时间/min 9 10 11 12 13 14 15
水温/°C 95 96 97 98 98 98 98
(1)从记录数据可得出结论是:此时水沸腾的温度是______℃.
(2)小刚发现从开始加热到沸腾的这段时间过长,造成这种现象的原因可能是(给出一种原因即可),解决的办法是______.

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质量相同的甲、乙两个实心球,密度分别是6×103kg/m3和12×103kg/m3.现把两球分别挂在两个相同的弹簧秤的挂钩上,然后将两球浸没在水中.这时它们所受的浮力分别为F和F;两个弹簧秤示数分别是T和T.下列各式中正确的是

[  ]

A.F∶F=2∶1
B.F∶F=1∶2
C.T∶T=10∶11
D.T∶T=13∶14

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质量相同的甲、乙两个实心球,密度分别是6×103千克/米3和12×103千克/米3.现把两个球分别挂在两个相同的弹簧秤的挂钩上,然后将两个球浸没在水中,这时它们所受的浮力分别是FF,两个弹簧秤的示数分别为TT,则下列说法正确的是(   )

     A.F:F=2:1            B.F:F=1:2

     C.T:T=10:11          D.T:T=13:14

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