资源简介

Lesson 25　Let’s Do an Experiment!
Ⅰ.根据句意及首字母或汉语提示写出单词
1.It’s not a s　　　　 method to test the result.
2.I have a friend c　　　　 Jenny.She is from Canada.
3.The 　　　　(力量) of nature is very strong.Nobody can prevent it.
Ⅱ.根据汉语意思完成句子
1.你最好把瓶子装满水。
You’d better 　　　　the bottle 　　　　water.
2.外面很冷。请穿上你的大衣。
It’s very cold outside.Please 　　　　 　　　　your coat.
3.谁能快速把它倒过来
Who can 　　　　 　　　　 　　　　 　　　　quickly
Ⅰ.完形填空【主题:人与社会　发明新型电源】
A 16-year-old boy named Li Tao lived in a small town in China.One day,while Li Tao was doing his science homework,he 　1　 a great idea.He worked out a way 　2　 a new type of power supply(供应) for his town,which had a problem with its electricity supply.
To make his idea come true,Li Tao began to experiment at home.He believed that nothing could stop him from 　3　.He made and took apart many models.Even though he faced lots of 　4　 and failures,he didn’t give up.He corrected his mistakes,changed his plans,and kept working hard.
　5　 two years of hard work,he finally succeeded.He made a small device(设备) that could 　6　 change wind power into electrical power.This was a 　7　,environmentally-friendly way for his town’s power problem.
News about Li Tao’s invention quickly spread around his school and town,and everyone really took pride 　8　 his achievement.The group of science-technology of the town decided to help him improve the invention.He was invited to give a speech to 　9　 other teenagers to learn more about science and be more creative in the Science and Technology Meeting.
His story encourages teenagers that being young is not a barrier(阻碍) to achieve their dreams.Even a common teenager can do 　10　!
1.A.came about B.came across C.came up with D.came from
2.A.make B.to make C.take D.to take
3.A.finding B.inventing C.learning D.inviting
4.A.faults B.rocks C.challenges D.objects
5.A.After B.Before C.Until D.Though
6.A.succeed B.success C.successful D.successfully
7.A.new B.old C.natural D.unusual
8.A.at B.in C.with D.of
9.A.regret B.survey C.encourage D.produce
10.A.amazing anything B.anything amazing
C.amazing something D.something amazing
Ⅱ.阅读理解【主题:人与社会　天空颜色实验】
Colours from milk
　　In this experiment,a glass of water acts like the Earth’s atmosphere—the air that surrounds(围绕) us and the sky over our heads.
　　You’ll need
　　·Clear drinking glass
　　·Milk,any kind
　　·Small spoon
　　·Flashlight(手电筒)
　　1.Fill a glass halfway with water.In a darkened room,shine a flashlight on the glass from top,sides and all angles(角度).
　　Does the light change when it goes through the glass
　　2.Add 1/4 teaspoon of milk to water and stir(搅拌).Shine the flashlight on the glass from all angles again.
　　What do you see
　　What happens
　　The light looks blue when you look at the side of the glass.
　　That’s because the tiny particles(分子) of milk scatter(使分散) the light,making it look blue.
　　Tiny bits of dust and air pollution in the atmosphere scatter sunlight and make the sky look blue.
　　Look at the side of the glass opposite the light,and it looks pink or orange.
　　Blue light has scattered from the beam(光线) of light,leaving those colours.
　　When sunlight shines through the atmosphere at sunset and sunrise,it looks reddish(微红的).
SOURCE:TNS
1.Which of the following is not needed in this experiment
A.Cup. B.Flashlight. C.Spoon. D.Milk.
2.What is the right order of the experiment
①Add some milk to water and stir.
②Fill a glass halfway with water.
③Shine the flashlight on the glass from all angles again.
④Shine a flashlight on the glass from all angles.
A.②③①④ B.①③②④ C.②④①③ D.①④②③
3.Which statement of the experiment is NOT true
A.The experiment must be done in a dark-ened place.
B.Any kind of milk can be used in this experi-ment.
C.The light looks blue when you look at the side of the glass opposite the light.
D.The milk in the experiment is like the dust and air pollution in the atmosphere.
Ⅲ.补全对话
(Linda and Jane are talking about an experiment.)
Linda:Hi,Jane.
Jane:Hello,Linda.1.　　　　　　　　　
Linda:I’m busy doing an experiment.
Jane:An experiment 2.　　　　　　　　
Linda:It’s about a theory of air pressure.I fill a jar with water.I cover the top with a piece of cardboard. Then,I turn the jar upside down.Think about what will happen
Jane:3.　　　　　　　　　 But I think we can’t do it inside.The floor will get wet.
Linda:No,it won’t.
Jane:4.　　　　　　　
Linda:Yes,I’m sure the water will stay in the jar.We can do the experiment and see what will happen.
Jane:Fine!We can know who is right.
Linda:5.　　　　　　　　 Let’s do it.
【详解答案】
基础达标
Ⅰ.1.scientific　2.called　3.force
Ⅱ.1.fill;with　2.put on
3.turn it upside down
能力提升
Ⅰ.【语篇解读】本文主要介绍了16岁的少年李涛想出了一种方法为他的城镇制造出了一种新型电源的故事。
1.C　解析:句意:一天,李涛在做科学作业时,他想出了一个绝妙的主意。came about发生;came across偶然遇到;came up with想到;came from来自。根据“a great idea”可知,此处表示想到一个主意。故选C。
2.B　解析:句意:他想出了一种方法,为他有电力供应问题的城镇制造出一种新型的电源。make制造;take带走。根据“a new type of power supply(供应) for his town”可知,此处是指制造一种新型电源,a way to do sth.“做某事的方法”,是固定短语。故选B。
3.B　解析:句意:他相信没有什么能阻止他发明创造。finding发现;inventing发明;learning学习;inviting邀请。根据“Li Tao began to experiment”及“News about Li Tao’s invention”可知,此处指发明。故选B。
4.C　解析:句意:尽管他面临许多挑战和失败,但他没有放弃。faults错误;rocks石头;challenges挑战;objects目标。根据“and failures,he didn’t give up”并结合选项可知,此处表示即使面对很多挑战和失败,他也没有放弃,challenges符合语境。故选C。
5.A　解析:句意:在两年的努力后,他终于成功了。After在……之后;Before在……之前;Until直到;Though虽然。根据“two years of hard work,he finally succeeded”可知,此处是指在两年的努力后,他成功了。故选A。
6.D　解析:句意:他做了一个可以成功地将风能转化为电能的小设备。succeed成功,动词;success成功,名词;successful成功的;successfully成功地。修饰动词用副词。故选D。
7.A　解析:句意:这是一种新的、环保的方法来解决他所在城镇的电力问题。new新的;old陈旧的;natural天然的;unusual不同寻常的。根据“a new type of…”并结合空前的“a”可知,new符合语境。故选A。
8.B　解析:句意:有关李涛的发明的消息迅速传遍了他的学校和城镇,每个人都为他的成就感到自豪。at在;in在……里面;with和;of……的。take pride in是固定短语,意为“为……感到自豪”。故选B。
9.C　解析:句意:他受邀在科技大会上发表演讲,鼓励其他青少年多学习科学知识,更有创造力。regret懊悔;survey调查;encourage鼓励;produce生产。根据“He was invited to give a speech to…other teenagers to learn more…Meeting.”可知,此处表示他鼓励其他青少年多学习科学知识,更有创造力。encourage符合语境。故选C。
10.D　解析:句意:即使是一个普通的青少年也能做出惊人的事情!本句是肯定句,用something;形容词修饰不定代词时,应该后置。故选D。
Ⅱ.【语篇解读】本文主要介绍了一个实验,说明了天空出现不同颜色的原因。
1.A　解析:细节理解题。根据“You’ll need”下的“·Clear drinking glass　·Milk,any kind　·Small spoon　·Flashlight(手电筒)”可知,这个实验需要玻璃杯、牛奶、勺子和手电筒。cup指有把手的陶瓷或塑料杯,与文意不符。故选A。
2.C　解析:细节理解题。根据“Fill a glass halfway with water…shine a flashlight on the glass from top,sides and all angles(角度).”和“Add 1/4 teaspoon of milk…Shine the flashlight on the glass from all angles again.”可知,实验的正确顺序是②④①③。故选C。
3.C　解析:推理判断题。根据文中“Look at the side of the glass opposite the light,and it looks pink or orange.”可推知,C项表述错误。故选C。
Ⅲ.1.What are you doing
2.What is it about
3.I don’t know.
4.Are you sure the water will stay in the jar
5.Great!

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