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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.
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| A.existence | B.presence | C.absence | D.performance |
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| A.disappointed | B.serious | C.nervous | D.happy |
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| 时间(分) | … | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 温度(℃) | … | 80 | 84 | 88 | 92 | 96 | 98 | 98 | 96 | 98 | 98 |
(2)从记录的数据看出:①在第
(3)小丽观察到沸腾前和沸腾时水中气泡上升过程中的两种情况,如图19(a)、(b)所示,其中图
(4)根据表格中的数据作出图(C)中水的沸腾图象.
(5)在这次实验中,发现从开始加热到沸腾的这段时间过长.请写出造成这种现象的其中一个原因
2.如图是探究平面镜成像的实验装置,关于这个实验:
(1)应选择
(2)观察像时,会发现两个几乎重叠的像,这是
(3)如果在像A′的位置放一个光屏,在光屏上
(4)当蜡烛向靠近镜面的方向移动时像的大小将
(5)如图是小军本人,他在进行实验时,从镜中也观察到了自己的像.那么他在镜中看到自己的像应是图中的
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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某小组同学通过实验研究圆柱体浸入液体的过程中测力计示数的变化情况。如图14所示,他们将高H位0.10米的圆柱体A挂在测力计下,逐步改变其下表面到液面的距离h,读出相应的测力计示数F,将h和F记录在表一中。然后,他们变换液体重复实验,将数据记录在表二中。为进一步研究F和h的关系,他们计算了相邻两次实验中h及F的变化量 表一(液体密度为
表二(液体密度为
① 实验序号2和13所空缺的数据分别为 (10) 、 (11) 。 ② 分析比较实验序号4、5、6、7与8或14、15、16、17与18等数据中F与h的关系及相关条件,可得出的初步结论是:在圆柱体浸入同种液体的过程中, (12) 。 ③ 请进一步综合分析表一、表二的相关数据,并归纳得出结论。 (a)分析比较实验序号3~8或13~18中 (b)分析比较实验序号3~8和13~18中 ④ 他们继续分析实验序号9和10或19和20的数据及相关条件,发现圆柱体浸入液体后,当h满足一定条件时,F不再随h而变化。 表三
为进 (15) (选填“甲”、“乙”或“丙”)。 器材:圆柱体甲 高H=0.10米; 圆柱体乙 高H=0.20米; 圆柱体丙 高H=0.10米。 请在表三的第二列填入拟进行实验的数据,以达到研究h所满足条件的目的。
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