Lesson 25　Let's Do an Experiment! 同步练习 （含答案）冀教版英语九年级全册

Lesson 25　Let's Do an Experiment!
同步练习
基础强化
一、根据句意、首字母及汉语提示完成单词拼写
1. Please think of a better __________ (方法)to do it.
2. You can’t __________(迫使) others to do what they hate.
3. Tom wants to do an __________ (实验 ) to test his theory.
4. You can put more __________ (压力)on her to make her agree.
5. Can you tell me the __________(正确的)method of solving the problem
二、用括号内所给单词的适当形式填空
1. We should believe in her. Her method is __________ (science).
2. The girl caught hold of her mother’s arm __________ (tight).
3. What __________ (happen) to you last night You don’t look very well.
4. Her mother made her __________(clean) her room before she went out to play.
5. They are very mean(吝啬的). This kind of person is often ________ (call) “iron cocks”.
三、根据句意及汉语提示完成句子
1. 他发现空气的压强那么大。
He _________ that the air _________ is so strong.
2. 坐直，并且把你们的手从桌子上拿开。
Sit straight, and _________ your hands ________ the desk.
3. 为了查明原因，我把那个盒子倒了过来。
In order to find out the reason, I ________ the box _________ _________ .
4. 你准备好给大家解释一下这个正确答案了吗？
_________ you ________ to explain the _________ answer to everyone
5. 人类社会的进步不但取决于人们的科学知识，还取决于他们的创新精神。
The development of human society depends on not only people’s ________ __________ but also their creative spirit.
能力训练
四、选择填空
1. — I’ve never cooked this before, so it’s _______ experiment.
—Don’t worry. I will help you.
A. a B. an C. the D. /
2. These cakes _______ with chocolate. Have one, please.
A. fill B. filled C. are filled D. were filled
3. It’s cold outside. _______ your jacket, Tom.
A. Put off B. Put on C. Take off D. Take on
4. We are sure of _______ the work on time.
A. finishing B. finish C. finishes D. to finish
5. The high-speed trains are fast enough_______ to Tianjin in half an hour from Beijing.
A. get B. to get C. getting D. got
6. Can you look up when the plane will _______ and arrive in Venice
A. take care of B. take off C. take after D. take down
7. When I got to the bus stop, I missed the early bus and I had to _______ the next one.
A. give up B. keep off C. call off D. wait for
8. He is very sure _______ passing the exam，because he has got ready for it.
A．of B．with C．to D．for
9. This is the first birthday gift _______ I received.I've kept it many years.
A．which B．that C．who D．what
10. —May I be allowed to choose a summer course
—It's up to you.You're ________to make your own decisions.
A.too old B．enough old C.old enough D．old too
五、用方框中所给单词或短语的适当形式填空
fill…with, turn…upside down, take off, pour out, scientific method
1. Mary is _____________ the tea for the guests carefully.
2. The jar is full of oil. Don’t ________ it ____________.
3. He will give a report about the _______________ of teaching.
4. Why don’t you _____________ your raincoat The rain has stopped.
5. You’d better ________ the car _______ petrol. We will have a long journey.
素养提升
六、根据短文内容和词语提示补全短文
Today, Jeanne and I did an 1.e_________ together. First, Jeanne found a wide-mouth bottle. She filled the wide-mouth bottle 2._________water. 3.T_________she used a piece of hard paper to 4._________(cover) the wide-mouth bottle. She turned the bottle upside 5._________.
She put the bottle over my head and told me she would 6._________ (take) her hand off the paper 7._________ (slow). Oh, I was afraid that the water would pour out. She 8._________(conclude) that I was 9._________ . She said, “Don’t be afraid! The water is unable to make you get wet. Air will firmly drag it.” Our classmates observed 10._________ (careful). She moved her hand away. The water didn’t pour out.
七、阅读理解
What is the sky How high is it What colour is it What birds can live above it These questions are difficult to answer，aren't they
In fact，the sky has no colour.Then why does the sky look blue We know that there is air around the world.When planes fly，they need air to lift their wings.Planes can't fly very high.That is because the air gets thinner when they go higher.
The same will happen to us if we go high enough.If we go up about 1，200 kilometres from the earth，we'll find no air there.Some birds can fly into the sky as high as a plane，but they cannot fly or live without air.
Looking up above us，you will see the blue sky with white clouds.It is usually light blue.The colour would be bluer when you see on the top of a high mountain.And you will see fewer clouds in the sky between you and the sun.
Sometimes the sky doesn't look blue.When the sun rises and falls，you will see red，orange，and other colours in the sky.Such are the most beautiful moments of the day.
Who can see the colours of the sky high above the earth The astronauts! They can see those beautiful colours of the sky from the outer space.However，before flying into outer space，they sit in a spaceship high above the earth，and there is no air at all.The sky would be that dark and its colour would be black.
Now you may understand that we see colours because the air scatters (使散射) the sunlight.Light travels through the air.Without air，there would be no light or colours.
1.Planes can't fly as high as possible because________.
A.the sky is blue
B.the wings are heavier
C.the sky has no colour
D.the air becomes thinner
2.When you stand on the top of a high mountain，you will see________.
A.more air B．bluer skies
C.more colours D．more clouds
3.We might see many colours in the sky at________ during the day.
A.6：00 a．m. B．9：00 a．m.
C.1：00 p．m. D．3：00 p．m.
4.The sky changes colours because________.
A.it's colourful itself
B.the world is colourful
C.the sunlight has colours
D.the air scatters the sunlight
5.What does the passage mainly talk about
A.Birds can fly without air.
B.Why does the sky look blue
C.The living of the astronauts.
D.Why can the plane fly very high
参考答案
一、1.method 2.force 3.experiment 4.pressure 5.correct
二、1.scientific 2.tightly 3.happened 4.clean 5.called
三、1.discovered/found, pressure 2.take, off 3.turned, upside down 4.Are, ready, correct 5.scientific knowledge
四、1-5BCBAB 6-10BDABC
五、1.pouring out 2.turn, upside down 3.scientific method 4.take off 5.fill, with
六、1.experiment 2.with 3.hen 4.cover 5.down 6.take 7.slowly 8.concluded 9.wrong 10.carefully
七、1-5 DBADB