1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1.下列事例中不是利用惯性的是 ( ) A 小轿车行驶时驾驶员和前排的乘客要系安全带 B 洗衣机的甩干桶高速转动时可以把湿衣服甩干 C 跳远运动员起跳前要助跑一段距离 D 锤柄的一端在地上撞击几下就可以套紧锤头 查看更多

 

题目列表(包括答案和解析)

(1)只要认真测量,按步骤进行操作,就可避免误差.
×
×

(2)施力物体同时也是受力物体.

(3)重力总是垂直于接触面作用的.
×
×

(4)光的反射只有当光射到两种不同物质的分界面上时才能发生.

(5)任何反射镜都能成像.

(6)凸镜和凹镜都可以使反射光会聚.
×
×

(7)在空中飞行的子弹受到向前的推力作用.
×
×

(8)同一物体在任何地区的重力都是不变的.
×
×

(9)只要两个力的大小相等,方向相反,同时作用在一条直线上就是平衡力.
×
×

(10)体积相等的实心球体,密度大的质量一定大.

(11)在匀速直线运动中,通过的路程长的物体,运动的速度一定大.
×
×

(12)力是改变物体运动状态的原因,同时也是维持物体运动的原因.
×
×

(13)物体放出热量,温度一定下降.
×
×

(14)物体只有在温度升高时,才从外界吸收热量.
×
×

(15)在物态变化过程中,必须存在物体间的热传递.
×
×

(16)在物体的放热过程中,温度一定下降.
×
×

(17)把酒精涂在皮肤上,感到凉,是由于酒精的蒸发造成的.

(18)凸面镜所成的像是虚像,它可以增大视角.
×
×

(19)平面镜中可以看到像,它一定是由光线会聚产生的.
×
×

(20)摩擦力总是阻力.
×
×

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(1)只要认真测量,按步骤进行操作,就可避免误差.______.
(2)施力物体同时也是受力物体.______.
(3)重力总是垂直于接触面作用的.______.
(4)光的反射只有当光射到两种不同物质的分界面上时才能发生.______.
(5)任何反射镜都能成像.______.
(6)凸镜和凹镜都可以使反射光会聚.______.
(7)在空中飞行的子弹受到向前的推力作用.______.
(8)同一物体在任何地区的重力都是不变的.______.
(9)只要两个力的大小相等,方向相反,同时作用在一条直线上就是平衡力.______.
(10)体积相等的实心球体,密度大的质量一定大.______.
(11)在匀速直线运动中,通过的路程长的物体,运动的速度一定大.______.
(12)力是改变物体运动状态的原因,同时也是维持物体运动的原因.______.
(13)物体放出热量,温度一定下降.______.
(14)物体只有在温度升高时,才从外界吸收热量.______.
(15)在物态变化过程中,必须存在物体间的热传递.______.
(16)在物体的放热过程中,温度一定下降.______.
(17)把酒精涂在皮肤上,感到凉,是由于酒精的蒸发造成的.______.
(18)凸面镜所成的像是虚像,它可以增大视角.______.
(19)平面镜中可以看到像,它一定是由光线会聚产生的.______.
(20)摩擦力总是阻力.______.

查看答案和解析>>

(1)只要认真测量,按步骤进行操作,就可避免误差.______.
(2)施力物体同时也是受力物体.______.
(3)重力总是垂直于接触面作用的.______.
(4)光的反射只有当光射到两种不同物质的分界面上时才能发生.______.
(5)任何反射镜都能成像.______.
(6)凸镜和凹镜都可以使反射光会聚.______.
(7)在空中飞行的子弹受到向前的推力作用.______.
(8)同一物体在任何地区的重力都是不变的.______.
(9)只要两个力的大小相等,方向相反,同时作用在一条直线上就是平衡力.______.
(10)体积相等的实心球体,密度大的质量一定大.______.
(11)在匀速直线运动中,通过的路程长的物体,运动的速度一定大.______.
(12)力是改变物体运动状态的原因,同时也是维持物体运动的原因.______.
(13)物体放出热量,温度一定下降.______.
(14)物体只有在温度升高时,才从外界吸收热量.______.
(15)在物态变化过程中,必须存在物体间的热传递.______.
(16)在物体的放热过程中,温度一定下降.______.
(17)把酒精涂在皮肤上,感到凉,是由于酒精的蒸发造成的.______.
(18)凸面镜所成的像是虚像,它可以增大视角.______.
(19)平面镜中可以看到像,它一定是由光线会聚产生的.______.
(20)摩擦力总是阻力.______.

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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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参考答案及评分说明二

一.选择题(共30分,每小题2分)

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答案

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