1．From the story we know that ________.
A．the writer was poor and didn’t buy the bookshelf for his wife
B．the writer’s wife didn’t like the bookshelf at all
C．the writer was always glad to buy something for his wife
D．the writer was not very glad to buy the bookshelf for his wife
2．What made the writer think that carrying furniture was “a good idea”?
A．He could drive slowly and it was safe.
B．Other drivers would let him go first.
C．His wife could use a new bookshelf.
D．He could save a lot of money and time.
3．Why were the police and other drivers so kind to the writer?
A．Because they thought the writer liked studying very much and needed a bookshelf.
B．Because they didn’t think it was polite to overtake a car with a bookshelf on it.
C．Because they thought somebody in the writer’s family had died and he needed help.
D．Because they thought it was dangerous to carry a bookshelf on a car.
4．Why did the writer’s wife begin to laugh?
A．Because now she knew what mistake the police had made.
B．Because at last her husband understood why the police had driven to the church.
C．Because the officer was always looking at the flowers and the bookshelf.
D．Because the police had helped them a lot.
5．When did the officers begin to realize（意识到）they had made a mistake?
A．Before they arrived at the church.
B．Before they overtook（overtake的过去式）the writer’s car.
C．After one of them looked at the flowers and the bookshelf carefully at the church.
D．After the writer’s family left the church.
五. 完成句子，每空一词
1. 不要在床上看书， 这对你的眼睛有害。
Don’t read in bed. ______ bad ______ your eyes.
2. 胡先生每天花半小时吃午饭。
It ______ Mr Hu half an hour ______ have lunch every day.
3. 如果你努力一些， 你就会赶上你的同学们。
If you works harder, you’ll ______ with your classmates.
4. 我正想睡觉，你能把音乐声关小吗？
I’m _______to sleep，________ you _________ the music，please?
5. 交通局想要车主付一大笔罚款。
The ministry of communications wanted the car’s owner to _____ _____ _____ _____.
参考答案：
一.
1. A
2. 根据句意可知此题考查动词不定式的否定形式，即tell sb．not to do sth．故此题应选C。
3. A
4. 本题要考虑do you think在特殊疑问句中的用法。在含有do you think的特殊疑问句中，do you think常位于疑问词之后，形成“疑问词（做主语或修饰主语）+do you think+谓语……？”或“疑问词（不做主语或不修饰主语）+do you think+主语+谓语……？”的结构，也可以用“Do you know+疑问词+谓语……？”或“Do you know+疑问词+主语+谓语……？”分别表示上述两个结构的意思，本题可改为：Do you know when he left here? 本题选B。
5. A turn on 打开电视、收音机之类带旋钮的设备。
6. 本题考查的是交际用语。乍一看，应选A、B、D，但是且看下文It’s for Mr. Brown.就不难判断，正确答案为C，意为：你最好不要坐在这。
7. C
8. C Mary是一个人，故用yourself。
9. C
10. B well修饰play。
11. A
二.
1. put out
2. behaved
3. annoyed
4. Not at all
5. put on
三.
1—5 CBAAD 6—10 CBCBA
四.
1、D 2、B 3、C 4、A 5、C
五.
1. It’s，for
2. takes，to
3. catch up
4. trying，Could，turn，down
5. pay，a，big，fine
（教案和教学设计）课件人教新目标八下教案Unit 7 Would you mind turning down&n教育资源
教学资料[八年级物理上]第4节 光的折射规律
第4节 光的折射规律
一、本节三维目标要求
1.知识与技能
Ø 通过实验探究，知道折射光线、折射角的涵义，了解光从空气射入水中或其他介质中时的偏折规律。
Ø 了解光在发生折射时，光路的可逆性。
Ø 了解生活中的光的折射现象，并能用光的折射规律进行解释。
2.过程与方法
Ø 经历“光的折射规律”的探究过程，学习描绘光路、记录实验数据的方法。
Ø 体验由折射引起的错觉，在实验中养成实事求是的科学态度。
3.情感、态度与价值观
Ø 初步领略折射现象的美妙，获得对自然现象的热爱、亲近的情感。
二、重点与难点
本节的重点是光的折射规律，难点是用光的折射规律解释现象。
三、教学实施建议
（一）教学过程展开
本节分为三个教学板块，（1）通过实验探究，认识和归纳光的折射规律；（2）通过体验由折射引起的错觉，认识光路的可逆性；（3）通过欣赏奇异的折射现象，学习用光的折射规律解释有关简单的折射现象。
1.实验探究过程设计：
首先让学生观看海市蜃楼的图片（图4-4-1）或视频（见所附光盘），引起学生的学习兴趣。然后通过观察图4-4-2的实验现象引入课题，从而激发学生的思维，引发学生思考。
用实验演示光从空气射入水中的折射现象时，教师应引导学生从实验现象抽象出光的折射示意图，最后画出光路图，由此认识入射点、入射光线、折射光线、法线、入射角、反射角等，为进一步探究光的折射规律作准备。有许多同学认为反射现象和折射现象二者不会同时发生。但事实上常常是反射和折射同时发生。借助这个演示实验，要澄清学生的模糊认识。
实验探究中，应先介绍实验装置：激光光源、玻璃砖等。让学生猜想，一束光射到玻璃砖平面上，进入玻璃的光线将沿什么方向行进，如果改变方向，是向界面偏折呢，还是向法线偏折？明确观察目的和观察对象。实验时，应改变入射光线的方向三次，注意观察玻璃中折射光线的方向怎样改变，记录光路。实验中如何记录光路，对学生是一个难点。教师应引导学生由发光点、入射点、从玻璃的出射点来确定光路。最后，让学生总结出光从空气斜射入玻璃中时的折射规律。
由于教材面对的是刚刚接触物理的初中生，所以在这里仅仅要求学生通过自己的实验和观察得到一些有关折射现象的感性规律：“折射光线与入射光线、法线在同一平面内；折射定律和入射光线分居法线两侧；光的空气斜射入玻璃中或其他介质中时，折射光线靠近法线，折射角小于入射角。”事实上，在真正的科学史的发展历程上，人们对折射现象的认识，尤其是对折射现象的理性化认识经历了一个十分漫长和参与者众多的过程。
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