问题 阅读理解

You probably know you should say ‘please’ and ‘thank you’ at restaurants. You probably know the rules of a library. You know you should respect and be nice to your classmates. But do you have music manners?

Keep it down! You have to notice the volume of your music. You should not play your music so loud that everyone around you can hear it. Some people might even get angry. Usually, when you play the music loud on an MP3 player, other people can’t hear the words of the song. They just hear a loud sound. Not one wants to listen to this. Very loud music can also be bad for your ears, so even if you are alone when listening to your MP3 player, you shouldn’t have it turned up too high.

Take them off! You need to know when to turn your MP3 player off and put it away. Libraries and schools don’t allow MP3 players. There are other places, like museums, that don’t have rules, but it would be rude to have your MP3 player on. Sometimes, it just doesn’t make sense to listen to your MP3 player at event. Why would you listen to music at a play, a movie or a sporting event? You would miss what is going on and others would wonder why you even came.

Take one out! Sometimes it’s okay just to take out one earphone and not the other. Imagine you are listening to your MP3 player when someone asks you the way. It would not be rude to take out one earphone, tell him the way, and put back the earphone and continue listening. You can also do this when you order food at a fast-food restaurant or when you answer the telephone and it’s not for you.

It’s your choice! There are times when you need to decide what is best. For example, some people can listen to music on their MP3 Players when read books, while others think it is disturbing. In cases like this, you need to do what seems right for you.

小题1:The underlined word ‘volume’ in paragraph two probably means _____.

A.the type of music

B.the amount of a sound

C.the length of a song

D.the colour of an MP3 player小题2:We should turn down the music when we are alone because loud music _____.

A.is not enjoyable

B.makes us tired

C.is bad for MP3 players

D.hurts our ears小题3:We can take one earphone out when we _____.

A.show others the way

B.talk to fiends on the phone

C.watch a sporting event

D.have dinner with our parents小题4:It’s all right to use our MP3 player in _____.

A.schools

B.libraries

C.restaurants

D.museums小题5:What can be the best title of this passage?

A.Music Lovers.

B.Music Manners.

C.MP3 Players.

D.MP3 Earphones.

答案

小题1:B

小题2:D

小题3:A

小题4:C

小题5:B

小题1:根据文章内容Keep it down! You have to notice the volume of your music.和上下文语境,可知答案为B

小题2:根据文章内容You should not play your music so loud that everyone around you can hear it. Some people might even get angry.可知答案为D

小题3:根据文章内容Take one out! Sometimes it’s okay just to take out one earphone and not the other.可知答案为A

小题4:根据文章内容It would not be rude to take out one earphone, tell him the way, and put back the earphone and continue listening. You can also do this when you order food at a fast-food restaurant or when you answer the telephone and it’s not for you.可知答案为C

小题5:根据文章内容大意可知答案为B

问答题

案例分析

案例《走进多媒体世界》


一、教学对象分析
由于我校地处广州市远郊,大部分学生来自农村,他们的计算机水平基本以“零”为起点。在初中阶段,他们也没有接触过多媒体方面的知识。
二、教学内容设计
针对学生“零”起点的情况,本节课主要是介绍多媒体一些最基本的概念;并从图像和动画这两个大方向出发,简单地介绍了图像的类型和辨别方法;简单地分析了图像所表达的信息;播放了几个奥运动画给学生欣赏,让学生对动画有个感性的认识(以后较深入的内容可留待选修“多媒体技术应用”时再讨论)。课程旨在引导学生逐渐进入多媒体世界,感受多媒体的特殊魅力所在,从而增强学生的学习兴趣。
三、教学目标设计
1.认知领域
(1)了解多媒体的概念,并对其组成元素有一定的理解;
(2)理解两种图像类型的概念,并能对其进行区别;能对给出的图像进行辨别;
(3)了解图像表达信息的独特之处,并能对给出的图像进行分析与思考;
(4)感受动画的闪动魅力,并能对动画有一定的感性认识;
2.操作领域
(1)对给出的多媒体信息,能提炼其中所包含的元素;
(2)辨别图像的类型及分析图像所表达的信息;
3.情感领域
(1)培养学生客观地分析和评价多媒体信息的信息素养;
(2)培养学生观察事物的能力;
(3)通过对奥运会会徽和亚运会会徽的分析,学生在潜移默化中提高了自身修养;
四、教学重点、难点
重点:多媒体概念的建立;矢量图像的理解;如何分析图像所表达的信息;
难点:如何从不同的角度分析图像所蕴涵的信息;
五、过程设计
1.新课引入
通过大屏幕,直接播放一个多媒体演示系统。
[教师活动]
问:现在我播放的是一个多媒体演示系统,大家认真看大屏幕,充分发挥你们的观察能力,看看你们能发现什么(边说边操作演示系统)
[学生活动]
观察大屏幕所播放的演示系统,进行思考,并回答问题;
答:声音、图像、文字、动画。
[教师活动]
针对刚才学生回答的结果做总结,并结合多媒体演示系统分析各个元素的存在并做进一步的补充。从而引出多媒体的概念。
2.新课内容
[概念一]什么是多媒体
将视频、声音、图形、图像、文字、文本、动画等多种媒体结合在一起,形成一个有机的整体,能实现一定的功能,就称之为多媒体。
[教师活动]
结合多媒体演示系统,分析多媒体的概念及其所包含的元素。针对中学阶段的学习目标,强调必修课主要是学习图像和动画方面的知识。至于更深入的问题,到选修课再讨论。首先我们来学习图像方面的知识。
问:看大屏幕,首先给大家看两幅图像(如上图)。现在,我要把它们先后进行放大,大家仔细观察,在放大的过程中,图像会发生什么改变两幅图像改变是否相同
[学生活动]:
随着老师慢慢放大图像,思考提出的问题。
答:图(1)在放大的过程中,有锯齿形出现,而图(2)在放大的过程中,没有锯齿形出现。
[教师活动]
根据上面所进行的活动,从而提出图像的类型:点阵图像和向量图像。并再次结合先前的图像进一步分析两类图像的概念及特征。
[概念二]什么是点阵图像
点阵图像是由许多不同色彩的点组成的图像。
[概念三]什么是向量图像
向量图像也称作为矢量图像,它以数学的向量方式来记录图像内容。
(由于高一阶段的学生还没有学数学向量的概念,故此处在直角坐标系中简单地引入了向量的表示)
[课堂思考]对下面给出的两幅图像,辨别分别属于哪一类型图像
(说明:随着老师慢慢放大图像,学生思考提出的问题,并做出回答)
[教师活动]
问:我们知道,人类可以用语言来进行交流。除此之外,我们是否还有其他的交流方式呢回答是肯定的。首先,我们来看一幅图像(如下图)。
[任务驱动一]解析2008年北京奥运会会徽。
(鼓励学生自告奋勇回答问题,只有3次机会。)
[教师活动]
点评刚才三位同学所做出的解析。并对他们的表现给予肯定。同时,针对北京奥运会会徽,做出总体解析(可以借助网络)。通过过程分析,可以得出图像的独特魅力所在:
(1)信息丰富,形象直观。
(2)图像可以跨越语言障碍,增进人们思想交流。
(插曲:在此可以说说今年春节联欢晚会《千手观音》这个节目所蕴涵的深刻含义)
[课堂思考]解析2010年广州亚运会会徽。
[教师活动]
上面我们简单地介绍了图像方面的一些知识,在后续的课程中,我们会讲一些图像加工方面的知识。那剩下的时间,我们就来欣赏几个动画,轻松轻松。(观看大屏幕)
[动画欣赏]
(1)奥运宣传篇——新北京、新奥运;
(2)真心英雄(MTV)——献给中国足球队的歌。
(说明:在欣赏动画的同时,教师对动画进行要点点评)
(本案例选自http://wenku.baidu.com/view/0df8c81ab7360b4c2e3f6417.html)
根据上述案例,回答下列问题:

请对该节课进行整体评价。(至少能写出2条优点或缺点)

解答题