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C 11.A 12.A 13.B 14.C 查看更多

 

題目列表(包括答案和解析)

如圖A“觀察水的沸騰”的實驗探究的是:水沸騰時的現象和水沸騰的溫度.圖B是實驗過程某一時刻的溫度,此時水溫是
85
85
℃.圖甲、乙、丙是三位同學作出的水沸騰的圖象,其中正確的是
圖.

小剛同學按實驗步驟進行了正確的操作,他得出的實驗數據如下表所示:
時間/min 9 10 11 12 13 14 15
水溫/°C 95 96 97 98 98 98 98
(1)從記錄數據可得出結論是:此時水沸騰的溫度是
98
98
℃.
(2)小剛發現從開始加熱到沸騰的這段時間過長,造成這種現象的原因可能是(給出一種原因即可),解決的辦法是
加大酒精燈火焰(或減少燒杯中水的質量)
加大酒精燈火焰(或減少燒杯中水的質量)

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There was a boy who was sent by his parents to a boarding school (寄宿學校).   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 (自殺). 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  !
【小題1】
A.AfterB.BeforeC.WhenD.While
【小題2】
A.hardestB.naughtiestC.brightestD.dullest
【小題3】
A.examB.activityC.gameD.class
【小題4】
A.comingB.returningC.leavingD.reaching
【小題5】
A.risingB.increasingC.reducingD.dropping
【小題6】
A.groupB.termC.company D.party
【小題7】
A.led toB.felt likeC.thought backD.looked for
【小題8】
A.worthless B.carelessC.concernedD.annoyed
【小題9】
A.caringB.turningC.worryingD.speaking
【小題10】
A.crazyB.trueC.possibleD.wrong
【小題11】
A.talk withB.listen toC.tell toD.care about
【小題12】
A.familyB.friendsC.studyD.grades
【小題13】
A.realizeB.analyzeC.checkD.test
【小題14】
A.outstandingB.importantC.famousD.familiar
【小題15】
A.happyB.excellentC.interestedD.satisfied
【小題16】
A.causedB.wantedC.encouragedD.forced
【小題17】
A.answeredB.ignoredC.hatedD.hugged
【小題18】
A.nothingB.somethingC.everythingD.anything
【小題19】
A.showedB.meant C.intendedD.expressed
【小題20】
A.sadB.angryC.pleasantD.joyful

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如圖A“觀察水的沸騰”的實驗探究的是:水沸騰時的現象和水沸騰的溫度.圖B是實驗過程某一時刻的溫度,此時水溫是______℃.圖甲、乙、丙是三位同學作出的水沸騰的圖象,其中正確的是______圖.

精英家教網

小剛同學按實驗步驟進行了正確的操作,他得出的實驗數據如下表所示:
時間/min 9 10 11 12 13 14 15
水溫/°C 95 96 97 98 98 98 98
(1)從記錄數據可得出結論是:此時水沸騰的溫度是______℃.
(2)小剛發現從開始加熱到沸騰的這段時間過長,造成這種現象的原因可能是(給出一種原因即可),解決的辦法是______.

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質量相同的甲、乙兩個實心球,密度分別是6×103kg/m3和12×103kg/m3.現把兩球分別掛在兩個相同的彈簧秤的掛鉤上,然后將兩球浸沒在水中.這時它們所受的浮力分別為F和F;兩個彈簧秤示數分別是T和T.下列各式中正確的是

[  ]

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

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質量相同的甲、乙兩個實心球,密度分別是6×103千克/米3和12×103千克/米3.現把兩個球分別掛在兩個相同的彈簧秤的掛鉤上,然后將兩個球浸沒在水中,這時它們所受的浮力分別是FF,兩個彈簧秤的示數分別為TT,則下列說法正確的是(   )

     A.F:F=2:1            B.F:F=1:2

     C.T:T=10:11          D.T:T=13:14

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