C 11. C 12.D 13. D 14. B 15. C 查看更多

 

题目列表(包括答案和解析)

如图1是“观察水的沸腾”的实验装置图.
(1)安装该实验装置时,应该先固定A、B两铁圈中的
B
B
铁圈,用酒精灯的
焰加热.
(2)在实验过程中气泡的大小也是变化的,其中图2中的图
b
b
是水沸腾前的情况.
(3)小明同学在利用如图1所示的装置做实验时,发现从开始给水加热到水开始沸腾所用的时间过长,请你帮助他找出可能存在的原因(只要写一种即可).
减小水的质量
减小水的质量

(4)在“观察水的沸腾”的实验中,第5实验小组记录了如下的实验数据:
时间/min 6 7 8 9 10 11 12 13 14 15
温度/℃ 95 96 97 98 98 98 95 98 98 98
(a)从记录数据看出,某一次观察记录中明显错误的是第
12
12
min时的数据;
(b)此时水沸腾的温度为
98
98
℃;此时外界气压
不是
不是
(选填“是”或“不是”)
标准大气压.
(c)在水沸腾过程中要
吸热
吸热
(选填“吸热”或“放热”).
(d)如图3是小组同学作出的水的沸腾图象,其中正确的是
D
D

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一根弹簧长10厘米,在它下端挂100克的钩码时弹簧长为11厘米,如果再挂200克的钩码(在弹簧的弹性限度内),此时弹簧的长度是

[  ]

A.12厘米

B.13厘米

C.14厘米

D.15厘米

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在“观察水的沸腾”的实验中,某个实验小组得到下列的实验记录表格:
时间(分) ---6 7 8 9 10 11 12 13 14 15
温度(℃) ---95 96 97 98 98 95 98 98 98 98
(1)从记录数据看,在某一观察记录中有明显错误的是
C
C

A.第6分钟时记录的温度偏低   B.第15分钟时记录的温度偏高
C.第11分钟时记录的温度偏低  D.第12分钟时记录的温度偏高
(2)从记录的数据可得出的实验结论是:此时此地水的沸点为
98
98
℃.
(3)停止加热后,水将
不能
不能
(选填”能”或”不能”)继续沸腾.

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完形填空 (共20小题;每小题1分,满分20分)
请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
Certainly dustmen prefer to be known as "Reuse Collection and Disposal Officers". You may think that this is rather    36 , and it is better to call a spade a spade. But dustmen can be as    37  as people of any other occupation, though we must     38   that their job is not a    39    one in the world. We often take dustmen for granted. Perhaps because they usually come very early in the morning, before most people are     40   .We are likely to forget their     41   .Our dustbins are    42   regularly, but we    43    stop to think about the men who do this. However, it is one of the most important jobs in the world, and when there are no dustmen to    44   the rubbish, the general    45   soon becomes aware that something is wrong. Recently, the dustmen of England went on strike for higher wages.
During the first few days it was regarded as a    46  .But when the first two weeks had passed, and the dustbins were overflowing in nearly every backyard in the country, the joke did not seem so    47   any more.    48   the strike continued, people could not    49   the hills of rubbish around their dustbins, and they looked for other places in which to    50  it. Even Leicester Square, in the heart of West End of London, was    51   high with plastic bags full of smelly rubbish. This was a(n)    52   attraction that the people of London were not at all     53   to see. Even when the strike was over, it took several weeks for the country to get cleaned up completely. Perhaps now the English people appreciate the work of    54  dustmen rather more    55   and won't take them for granted any more.
【小题1】
A.cleverB.sillyC.interestingD.reasonable
【小题2】
A.sensitiveB.carelessC.hopefulD.shy
【小题3】
A.realizeB.believeC.knowD.admit
【小题4】
A.necessaryB.difficultC.romanticD.heavy
【小题5】
A.awayB.upC.downD.in
【小题6】.
A.existenceB.presenceC.absenceD.performance
【小题7】
A.cleanedB.filledC.emptiedD.burned
【小题8】
A.generallyB.frequentlyC.sometimesD.seldom
【小题9】
A.take awayB.take offC.take upD.take on
【小题10】
A.societyB.citizenC.publicD.community
【小题11】
A.trickB.jokeC.troubleD.show
【小题12】
A.pleasingB.excitedC.stupidD.funny
【小题13】
A.WhenB.WhileC.AsD.Because
【小题14】
A.bearB.containC.manageD.control
【小题15】
A.keep offB.give upC.take care ofD.get rid of
【小题16】
A.crowdedB.piledC.fixedD.put
【小题17】
A.businessB.industrialC.touristD.agricultural
【小题18】.
A.disappointedB.seriousC.nervousD.happy
【小题19】
A.itsB.herC.hisD.their
【小题20】
A.highlyB.eagerlyC.lowlyD.entirely

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三个实验小组同时分别探究“蜡熔化时温度的变化规律”、“海波熔化时温度的变化规律”与“水的沸腾”,记录数据如下表:
时间/min 10 11 12 13 14 15 16 17
甲的温度/℃ 97.0 97.5 98.0 98.0 98.0 98.0 98.0 98.0
乙的温度/℃ 35.0 40.0 45.0 49.5 54.0 58.3 62.5 66.6
丙的温度/℃ 46.0 47.0 48.0 48.0 48.0 48.0 48.8 49.8
根据记录表,请你判断下列说法正确的是(  )

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