(1)(呈现2a的图, 利用图通过师生互动导出hear ...doing.) T: Look at the picture. Who is that girl? Ss: She is Mary. T: What is she doing? Ss: She is playing the piano. T: Right. She is playing the piano when Michael knocks at the door. Do you know why he comes to knock at Mary’s door? Ss: He thinks it’s too loud. T: What did Mary answer? Ss: I’m really sorry about that. (2)(让学生听2a的录音, 跟读对话.) T: Please listen to the tape and repeat. T: What does Michael hear? S1: He hears Mary playing the piano. T: What does he think of it? S2: He thinks the music is very beautiful, but it’s too loud. T: Is it right to make too much noise? S3: No, it isn’t. T: Yes, it is not right to trouble others. We must think of others anytime and anywhere. 查看更多

 

题目列表(包括答案和解析)

明同学利用A、B两物体、砝码、泡沫等器材探究“压力的作用效果与什么因素有关”的实验.如图

(1)实验中,小明是通过观察   ▲   来比较压力作用效果的.
(2)比较甲、乙两图所示实验,能够得到的结论是:       ▲     
(3)若要探究“压力的作用效果与受力面积大小的关系”,应通过比较图   ▲  
所示实验.
(4)小华同学实验时将物体B沿竖直方向切成大小不同的两块,如图丁所示.他发现
它们对泡沫的压力作用效果相同,由此他得出的结论是:压力作用效果与受力面积无关.你认为他在探究过程中存在的问题是:          ▲            .

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如图所示,甲是探究“动能的大小与什么因素有关”的实验装置,实验中让同一钢球从斜面上不同的高度由静止滚下,碰到同一木块上.乙是探究“阻力对物体运动的影响”的实验装置,实验中让同一小车从斜面上相同的高度由静止滑下,在粗糙程度不同的水平面上运动.请回答下列问题:

  (1)甲实验的目的是探究钢球动能的大小与             的关系;实验时,它是通过观察            ,从而判断钢球动能的大小。
  (2)进行乙实验时,每一次都让同一小车从斜面上相同的高度由静止滑下,其目的是使小车在水平面运动的起始             相同;通过观察小车在粗糙程度不同的水平面上运动            来判断小车在不同的水平面受到            的大小.从而可以推理:如果运动的物体不受力,它将                

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Liu Yong 有一个笔友,他叫Mike。Mike将要到Liu Yong家做客。但他不认识去Liu Yong家的路。Liu Yong通过e-mail的形式给Mike发了一张地图。请就以下的图描述一下地图的内容。
【小题1】                                                                        
【小题2】                                                                     
【小题3】                                                                        
【小题4】                                                                        
【小题5】                                                                        

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Liu Yong 有一个笔友,他叫Mike。Mike将要到Liu Yong家做客。但他不认识去Liu Yong家的路。Liu Yong通过e-mail的形式给Mike发了一张地图。请就以下的图描述一下地图的内容。
【小题1】                                                                        
【小题2】                                                                     
【小题3】                                                                        
【小题4】                                                                        
【小题5】                                                                        

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Liu Yong 有一个笔友,他叫Mike。Mike将要到Liu Yong家做客。但他不认识去Liu Yong家的路。Liu Yong通过e-mail的形式给Mike发了一张地图。请就以下的图描述一下地图的内容。

1.                                                                        

2.                                                                      

3.                                                                        

4.                                                                        

5.                                                                        

 

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