Doing experiments can be interesting, and you may try the following experiments at home. Make sure that you’ll do them with an adult.

小題1:How many experiments are there in the pictures?
A.Six.B.Five.C.Three.D.Two.
小題2:The following are the instructions on how to do “Step 2” in these experiments. Which one is the right order?
a. Pour 3/4 of the water away. 
b. Put a balloon on the bottle.
c. Put the bottle in a bucket of hot water. The air rises into the balloon.
A.a(chǎn), b, cB.a(chǎn), c, bC.b, a, cD.c, a, b
小題3:What can you see in the bottle at last in Experiment A?
A.Some ice.B.Some water.
C.Some ice and water.D.A cloud and some water.
小題4:What will happen to the balloon in “Step 3” in Experiment C?
A.It will be bigger.B.It will be broken.
C.It won’t change.D.It will be in the bottle.

小題1:C
小題2:B
小題3:D
小題4:D
短文屬于圖表類閱讀。實驗空氣遇冷遇熱的變化。
小題1:細節(jié)理解題。從圖片中可以看出,共有三個實驗。
小題2:綜合理解題。通過認真看圖分析,可以得知。實驗A的第二步是倒出一些水,以便于有形成云的足夠的空間;實驗B的第二步是把瓶子放在熱水中,以便于使瓶中的空氣遇熱上升進入氣球;實驗C的第二步是把氣球放在瓶子上。
小題3:細節(jié)理解題。從實驗A的第④步“…there is a cloud”可以看出瓶中產(chǎn)生了云,當然里面還有原來的水。
小題4:推理判斷題。因為“cold air falls”可知,瓶中的空氣遇冷要下降,氣球也隨之下降進入瓶中。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中英語 來源:不詳 題型:閱讀理解

New rules and behaviour standards (行為規(guī)范) for middle school students came out in March. Middle school is going to use a new way to decide who the top students are. The best students won't only have high marks. They will also be kids who don't dye (染) their hair, smoke or drink. Here are some of the new rules. 
Tell the truth. Have you ever copied someone else's work on an exam? Don't do it again! That's not honest. If you have played computer games for two hours in your room, don't tell your parents that you have done homework.
Do more at school. Good students love animals and care for other people. April is Bird-Loving Month in our country. Is your school doing anything to celebrate? You should join! That way, you can learn more about animals and how to protect them. Have you ever quarreled(吵架)with your teammates when your basketball team lost? Only working together can make your team stronger. Be friendly to the people you are with. Try to think of others, not only yourself.
Be open to new ideas. Have you ever thought that people could live on the moon? Perhaps you'll discover(發(fā)現(xiàn)) Earth II someday. Don't look down at anyone. Everyone's ideas are important. You should welcome them, because new ideas make life better for everyone.
Protect yourself. Has someone ever taken money from one of your classmates? Don't let it happen to you. If you have to go home late, you should let your parents know.
Use the Internet carefully. The Internet can be very useful for your studies. But some things on the Internet aren't for kids, so try to look at Web pages that are good for you. You can use the Web for fun or homework.
小題1:According to the passage, which of the following is not true?
A.Take care of yourself when you are out.B.Tell the truth, even when you are wrong.
C.Keep some animals to protect them.D.Use the Internet, but keep away from bad thing
小題2:The main idea of the fourth paragraph is about         .
A.making the team strongerB.working together with others
C.being a good friend to othersD.getting on well with others
小題3:The passage tells us how to         .
A.be top students B.do more at school
C.care for others D.use the Internet

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解


Welcome to my room. Open the door(門). You can see a desk. There are some books on the desk. My pens are on the desk, too. Behind the door there is a basketball. I love it very much. On the wall there are two pictures. Look at the boy. It's me. Where is my football? Oh! It’s on the sofa(沙發(fā)). Is my computer on the desk? No , it isn’t . It’s next to the desk. I love my room. It’s very nice , isn’t it?
小題1:.Where are the books? They are___________.
A.on the sofaB.on the wallC.on the deskD.under the desk
小題2:. There isn’t a _______ in my room.
A.computerB.footballC.basketballD.TV
小題3:Who is the boy in the picture?  It’s ______.
A.meB.my brotherC.my friendD.my father
小題4: Is my football under the sofa?
A.Yes, it is.B.No, it isn’t.C.Yes, it’s.D.I don’t know.
小題5: Where is my computer?  It’s _______.
A.on the deskB.on the sofaC.next to the deskD.next to the sofa

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

What can we do when someone hurts you?Most people may be angry or even fight with the one who hurts him or her?But it’s not a good idea.The best way is to forgive(寬恕,原諒 ) them.
Although(盡管)it is not easy for us to forgive people who hurt us,it is possible.”Forgiveness makes you more helpful.And it is god for our health,”says Frederic,phD,the writer of the book called Forgive for God.
But how can we forgive others?It is really a problem.Let’s see how we can do it.First,think of something beautiful and the people you love.Try to get yourself happy. Second,don’t wait for others to say sorry to you. If the people hurt you,he or she won’t say sorry to you.They may just want to hurt you or they just don’t see things the same way. Third, try to see things in others’ shoes.You can write a letter to yourself from the offender’s(對方)point.That can make you understand others better and make yourself happier. At last,don’t forget to forgive yourself. For some people,forgiving themselves is the biggest challenge( 挑戰(zhàn) ).And it also makes you more confident.
小題1:If your friend hurts you,which is the best way to do ?
A fight with him or her      B.say sorry to him or her
C. forgive him or her       D.write letter to him or her
小題2:According to this passage,we can know that writer thinks forgiving others is _____.
A.impossibleB.foolishC.easyD.difficult
小題3:Which of the following is Not True.
A.Forgive for God is the name of a book.
B.Forgivness can make people healthy.
C.People who hurt you often say sorry to you soon.
D.It is a challenge for some people to forgive themselves.
小題4:The writer gives us _____ideas to forgive others who hurt us.
A.twoB.threeC.fourD.five
小題5:The sentence “ Third,try to see things in others’ shoes”
means_________________________________.

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

In the opinion of many people, the two­parent family is the correct way to raise children. Traditionally, this has been as the most natural way, but single­parent families have had to face prejudices(偏見) against their life­style. However, the single­parent family is the fastest growing type of family. In the United States, a national survey showed that at least 50% of children will be members of a single­parent family. So we think it is important to throw prejudices away and to see the advantages of single­parent families.
When compared to two­parent families, single­parent families are usually at a disadvantage in some ways. They are often in short of money, and children receive less attention. What’s more, single parents can find themselves under too much pressure(壓力) of both work and home. Despite(盡管) these disadvantages, it is possible for single­parent families to look for support from friends, schools, communities or other organizations. They need to remember that nobody can do it alone.
Surprisingly, single­parent families also have some advantages over two­parent families. Single parents have greater flexibility(靈活性) in spending time with children, because they don’t have to consider the needs of a husband or wife. So they can develop closer relationships with their children. Another advantage comes from the fact that single parents often work together with their children to solve problems, which makes children feel more needed and valued.
It’s important to remember that single­parent families have, until now suffered prejudices from some people. They think that it’s easier for the children in single­parent families to drop out of school in teens, and to be jobless in their early twenties. But, with the support from friends, schools and communities, single­parent families become more accepted by society, and this situation is certain to improve. In the future we will probably see these prejudices disappear.
小題1:What does the writer mainly tell us in Paragraph 1?
A. People shouldn’t have prejudices against single­parent families.
B. The single­parent family is not good for raising children.
C. The two­parent family is the correct way to raise children.
D. 50% of children will be members of a single­parent family in the USA.
小題2:Which disadvantage of single­parent families is NOT mentioned in Paragraph 2?
A.They are often in short of money.
B.Children may receive less attention.
C.Children also suffer from the prejudice.
D.Parents are under pressure of both work and home.
小題3:How can single parents make their children feel more needed and valued?
A.Don’t consider the needs of others.
B.Pay more attention to their children.
C.Develop closer relationships with their children.
D.Discuss and solve problems together with their children.
小題4:Which of the following may be the best title for this passage?
A.Advantages and Disadvantages
B.Changing Views on Single­parent Families
C.Best Life­style for Children
D.Comparing Two Types of Family

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

Shenzhen's fast development has made it become China's most crowded city! There are about 15 million people living on its 1991square kilometers. On each square kilometer averagely live 7500 people. It is 1080 more than that in Hong Kong, and nearly 800 more than that in Guangzhou.
Besides, Shenzhen owns 2 million local vehicles, and about 300000 vehicles from other places also run on the local roads every day. The total length of the city's road is 6041 kilometers. It means each resident only owns 0.58 meters of road!
As a result, the city is facing serious environmental and resource problems. One of the problems is water shortage. The amount of fresh water for each person of the city is only 25% of the country's average. What's more, most of the water drunk by Shenzhen people comes from other areas.
小題1:According to the passage, which of the following makes Shenzhen so crowded?
A.Shenzhen has not enough water.
B.There are too many people
C.Shenzhen is developing very fast
D.Shenzhen is too small
小題2:There are _______ people living in Shenzhen now.
A.a(chǎn)bout 1991B.a(chǎn)bout 15000000C.a(chǎn)bout 150000D.a(chǎn)bout 300000
小題3:In Hong Kong, there are _______ people on every kilometer?
A.a(chǎn)bout 7500B.a(chǎn)bout 1080C.a(chǎn)bout 800D.a(chǎn)bout 6420
小題4:Which problem in Shenzhen is not mentioned in the passage?
A.Traffic accidents.B.Water shortage.
C.Environmental problemsD.Population problem.
小題5:Which is the best title for this passage?
A.Largest Population in China.
B.Biggist Problems in Shenzhen
C.Busiest Roads in Shenzhen
D.Most Crowded City in China

查看答案和解析>>

科目:初中英語 來源:不詳 題型:完形填空

Plants are very important living things. Life could not go on if there were no plants. This is   1  plants can make food from air, water and sunlight. Animals and men   2 make food from air, water and sunlight. Animals get their food by eating plants and animals   
 3   Therefore(因此), animals and  men need plants in order to   4  This is the reason(原因) why we find that there are so many plants around us.
If you look carefully at the plants around you   5   find that there are many kinds of plants. Some plants are large   6   others are small. Most plants are green..
Some plants have many small leaves. Others have only   7  large leaves. There are many kinds of leaves. Leaves are of  8    shapes(形狀) and colors.
Leaves are also different in other ways. Some leaves have short leaf stalks(葉莖)while others have long leaf stalks. Still others have  9   stalks at all. The edges(邊)of leaves are also different. Some leaves have smooth(光滑的)edges. Some have wave(波狀的) edges    10   the teeth of saw(鋸).
小題1:
A.whyB.becauseC.howD.that
小題2:
A.don’tB.notC.cannotD.can
小題3:
A.tooB.eitherC.a(chǎn)lsoD.a(chǎn)lready
小題4:
A.eatB.liveC.haveD.get
小題5:
A.a(chǎn)re going toB.mayC.certainlyD.will
小題6:
A.whenB.yetC.a(chǎn)ndD.while
小題7:
A.a(chǎn) littleB.a(chǎn) fewC.littleD.few
小題8:A. much          B. different         C. same            D the same
小題9:
A.notB.noneC.neitherD.no
小題10:
A.likeB.a(chǎn)sC.a(chǎn)s ifD.seem

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

How would we travel without maps? It would be a bit adventurous (冒險的) to set off from Oxford University to go to London Bridge if there wasn't a map of the London Underground at each station. In fact, a lot of the early map-makers were adventurers and explorers, especially in the 15th and 16th centuries.
So what did people do before there were maps? Well, it was quite easy to use natural signs like mountains and rivers if you were travelling on foot or riding a horse. People took small boats down rivers and followed coastlines. And it was much more logical (合理的) to use time, not distance, to measure (計量) journeys: the next village is a three-hour ride, for example.
In fact, in the earliest maps, people didn't draw landmarks. They drew the stars. It was very easy to see the night sky and use it for navigation (航行). The sky was a lot clearer before the light pollution from cities that we have today. When towns and cities were built, people drew road maps which gave correct distances and directions.
The London Underground was opened in 1863 and it also used a road map style. But a man called Henry Beck realized that travelling by train wasn't the same as driving your car across London. Passengers only needed to know which stations to change at. His new design (設(shè)計) for the Underground map wasn't very popular with the train companies at first. But the passengers loved it and in 1933, 700,000 copies were printed.
These days, of course, you can ride a bike, drive a car or go through a forest and know where you are exactly, using a GPS. It's really difficult to get lost!
小題1:What was drawn in the earliest maps?
A.Stars.
B.Landmarks.
C.Cities and towns,
D.Mountains and rivers.
小題2:When did road maps come out?
A.Around 15th and 16th centuries.
B.When people began to travel by train.
C.When people began to travel by sea.
D.When cities and towns appeared.
小題3:Which of the following is true?
A.A GPS helped people to travel long time ago.
B.Ancient people could travel on a horse without maps.
C.The sky was polluted by light before cities were built.
D.Henry Beck's map wasn't popular with the passengers.
小題4:What is the main idea of the passage?
A.Maps have a long history.
B.We never get lost these days.
C.We can't travel without maps.
D.Henry Beck designed a new map.

查看答案和解析>>

科目:初中英語 來源:不詳 題型:閱讀理解

閱讀短文,判斷下列句子是否符合短文內(nèi)容。符合的寫“A”,不符合的寫“B”。

Water is the most important in our lives. Not Many people understand this but it’s quite true. The human body can go without food for a long time. We’ve got many examples for this. Yet two or three dayswithout water can usually make people die. Man can’t live without water.
Many people don’t understand how much water the human body needs to work well, and many people, especially young people, do not drink enough water, even in very hot weather. About two thirds of our body is water. When we do sports, some of the water will get away from our body. If we don’t drink some water, our body won’t have enough water. And if we don’t have enough water, we’ll feel tired and many of us will get ill. So you know how important water is to us.
But at present we face water crisis(危機). Water is becoming less and less. So, we should protect water resources(資源) and try our best to save water in our daily life. Here are some tips for saving water:
1. Turn off the tap(水龍頭) in lime.
2. Take shorter showers.
3. Don’t let water run while washing your face and reuse the water after we finish washing.
4. Encourage your friends and neighbors to join in the action of saving water.
小題1: Nobody can live without water.
小題2: About one third of our body is water
小題3: If one doesn't have enough water, he’ll feel tired and may get ill.
小題4: We’d better take longer showers and let water run while washing.
小題5: It’s our duty to protect water resources and save water.

查看答案和解析>>

同步練習(xí)冊答案