国产精品热久久久久夜色精品三区,在线中文一区,91免费视频观看

精英家教網 > 初中英語 > 題目詳情

Wind is the great maker of waves. There are exceptions (例外), such as the tidal (潮汐的) waves sometimes caused by earthquakes under the sea. But the waves most of us know are caused by winds blowing over the sea .
Now let’s learn some physical (自然地理學的) things about it. A wave has height, from low point to high point . It has length (長度)--the distance from this high point to that of the following wave. The period of the wave means the time it takes for succeeding high points to pass a fixed point. None of these things stays the same--for all depend upon (依靠)the wind, upon the depth (深度) of the water and many other matters.
The water that makes up a wave does not advance with it across the sea. Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position (原先的位置). And it is lucky that this is so. For if the huge groups of water that make up a wave really moved across the sea, sailing would be impossible. If we want to find the speed of a wave, we may use the following way : Speed =" wavelength" × frequency (頻率).
Here, wavelength is the distance between two high points , frequency means the number of cycles per second
小題1:What causes waves?

A．Earthquakes and nothing else.	B．Only wind.
C．Wind causes most waves.	D．Wind causes some waves.

小題2:Which of the following is TRUE according to the passage?

A．The water of a wave moves away across the sea.

B．The water of a wave remains almost at the same place.

C．The water of a wave goes with the passing of the wave.

D．The length of a wave means the distance from the top of a wave to the bottom.

小題3:The speed of Wave 1 is 100 cm/s, frequency 10. The frequency of Wave 2 is 300, while its speed is twice that of Wave 1. Which of the following is right?

A．The wavelengths of the two are equal.

B．The wavelength of Wave 1 is 10 times longer than that of Wave 2.

C．The wavelength of Wave 2 is longer than that of Wave 1.

D．The wavelength of Wave 1 is longer than that of Wave 2.

小題4:Where can we find this passage?

A．music magazine

B．fashion magazine

C．scientist magazine

D．sports magazine

小題1:C
小題2:B
小題3:D
小題4:C

小題1:根據文章內容第一段Wind is the great maker of waves. There are exceptions (例外), such as the tidal (潮汐的) waves sometimes caused by earthquakes under the sea.可知答案A和B是錯誤的，而根據文章內容第一段But the waves most of us know are caused by winds blowing over the sea .可知答案D是錯誤，故選答案為C
小題2:根據文章內容第三段內容The water that makes up a wave does not advance with it across the sea，可知答案A是錯誤的；根據文章內容第三段內容Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position (原先的位置).可知答案為B項的說法是正確的，同時C項的說法是錯誤的；又根據文章第二段的內容. A wave has height, from low point to high point，可知答案為D項說明的內容是錯誤的，故選B
小題3:根據文章內容第三段的內容If we want to find the speed of a wave, we may use the following way : Speed =" wavelength" × frequency (頻率).根據題目中所給的信息，可知答案為D
小題4:根據文章整體的內容和文章內容第二段內容Now let’s learn some physical (自然地理學的) things about it.可知答案為C，介紹的地理相關知識，自然是來自科學雜志。
點評：學生在做此項閱讀理解時，要注意專業知識的闡述，把握好知識點。

練習冊系列答案

年級	高中課程	年級	初中課程
高一	高一免費課程推薦！	初一	初一免費課程推薦！
高二	高二免費課程推薦！	初二	初二免費課程推薦！
高三	高三免費課程推薦！	初三	初三免費課程推薦！
更多初中、高中輔導課程推薦,點擊進入>>

相關習題

科目：初中英語 來源：不詳 題型：完形填空

These days it is found that school students hardly have any sports. Is it because they have no interests in sports? It may not be true. They often say they have 1 more important things to do.
What are these important things? Exams! They have to 2 themselves ready for all kinds of exams and tests in school. So many of them almost become bookworms ( 書蟲 ). In the past, they could do 3 they liked in summer holidays, but now they have to 4 all their time preparing for the exams. So 5 have kept them away from going in for sports.
Because of the pressure from 6 their parents and teachers, they 7 to work harder and spend most of their time on books. As for the students themselves, they don't want to 8 the exams. So it is necessary to give up their school sports and give all their spare time to their studies.
It's true that a good education cannot go 9 physical training and that if a quick mind hardly goes along with a strong body, you can 10 do anything well, and then how can you make great success in life?

小題1:

A．another

B．other

C．much

D．any

小題2:

A．make

B．have

C．get

D．let

小題3:

A．some thing

B．something

C．everything

D．nothing

小題4:

A．give

B．spend

C．take

D．cost

小題5:

A．teachers

B．parents

C．studies

D．holidays

小題6:

A．either

B．both

C．neither

D．none of

小題7:

A．try

B．hope

C．have

D．enjoy

小題8:

A．miss

B．lose

C．leave

D．fail

小題9:

A．without

B．with

C．out

D．in

小題10:

A．always

B．ever

C．never

D．still

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Someone is singing next door, but you feel unhappy because her singing is terrible. So you think she is just making noise. We know that too much noise makes people feel terrible.
Scientists are still trying to find out more about noise, but already it is known that a noise of over 85 decibels(分貝) can make some people tried and anxious(焦慮的).
In the past we thought only workers in very noisy places became deaf easily. Today, scientists believe that 10% of all workers in Britain become deaf in their work.
There are also new dangers from noise. Pop music, for example, can reach 120 decibels when it is played loudly five feet away! Only a plane can make such loud noise when it takes off.
There was an experiment in the United States. Some people would be given a lot of money if they stood below a jet when it was taking off over their heads. No one got the money after the jet flew past because all of them died in the noise.
People can’t pay their attention on what they are doing when there is much noise. Workers in noisy offices, for example, do their work more slowly than workers in quiet offices. Another study shows that workers in factories can do dull(枯燥的) jobs better when lively music is played for them.

Topic	Too much noise makes people feel ___1____
Sources(源) of noise	. terrible singing . pop music when it is played ___2____ nearby . loud noise made by a plane taking off overhead
Harm of noise	. A noise of over 85 decibels can make people feel tired and anxious. . 10%of all workers in Britain become ___3___ in their work. . Some people lose their ____4___ in the noise of a plane taking off over their heads. . Workers in noisy places do their work more ___5___ than those in quiet places.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

We are learning English, but how can we learn English well? A student can know a lot about English, but maybe he can not speak English.
If you want to know how to swim, you must get into the river. And if you want to be a football player, you must play football. So , you see, you can learn English only by using it. You listen to your teacher carefully in class. You must read your lessons every day. You must speak English to your English teacher and classmates and also you must write in English. Then one day, you may find your English very good.
小題1:You know a lot about English but maybe you ______.

A．can’t speak it	B．can study it
C．can’t study it	D．can’t use it

小題2:You must get into the river ______.

A．to play with water	B．to go boating
C．to learn how to swim	D．to catch a fish

小題3:Do you want to be a football player? Please____.

A．put your football away	B．buy a good football
C．play football	D．watch others play football

小題4:According to the passage，how can we learn English well ?

A．We must have a good English book.

B．We must have a good English teacher.

C．We must see more English films.

D．We must use it often.

小題5: Who can you speak English to in your class?

A．Only my classmates.

B．My English teacher and classmates.

C．My father and mother.

D．All my friends.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

閱讀理解
When July comes, children know they’ll have the final exams and the school year will end soon. Boys and girls will have a nearly two months’ holiday, and they’ll leave school by train or by car to return home to see their fathers and mothers.
The summer holiday is the best time of the year for most students. The weather is good, so they can spend most of their time playing outside .If one lives in the country, he can go on a trip into the woods or in the fields. If one lives in a big city, he can go to a park to play.
The best place for a summer holiday is the seaside. Some children are lucky enough to live near the sea. But for the others who do not, if they have the chance to stay at one of the big seaside towns for a week or two, they will talk about it all the following school year.
Now, what makes children like the seaside so much? I think it is the sand, the sea and the sun, not anything else. Of course, there are lots of new things to see, nice things to eat and interesting things to do. But the feeling of the sand under their feet, the salt water on their skin, and the warm sun on their backs make them happier.
小題1:Every year, school children have the final exams in ____, and the exam means the school year will end.

A．May

B．January

C．July

D．December

小題2:According to the passage, if a child comes from a big city, he can often ____ in the summer holidays.

A．stay at home	B．go on a trip to the woods
C．go on a trip in the fields	D．go to a park to play

小題3: It’s the best way for children to go to the ____ to spend their summer holidays.

A．park

B．seaside

C．city

D．country

小題4: ____ make children like the seaside so much?

A．The beautiful parks	B．The new things
C．The sand, the sea and the sun	D．The people near the sea

小題5: Which of the following is Not true according to the passage?

A．After the final exams ,school children will stay at school for extra classes.

B．The summer holidays is a good time to go out for a trip.

C．The children from the countryside can have a good time in the woods in the summer holiday.

D．If some children go on a trip to the seaside, they will have many things to talk about.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Green tea is the best choice for office workers.
People who always work in places with air conditioning may face skin problems such as easily dry skin. Among all the drinks, green tea is the best choice. Because there are important things in green tea and they are often called catechins(兒茶酚). Moreover, drinking more green tea can prevent computer radiation(輻射).
Winter is the season to drink black tea.
Chinese medicine believes that different people should drink different tea based on the different characteristics and tastes of each kind of tea. Black tea can warm the stomach and quicken digestion(消化). Therefore, drinking warm black tea in the cold winter is a most suitable choice.
Do not drink strong tea.
Strong tea may make the body far too excited and can badly affect the cardiovascular(心血管的) as well as the nervous system(神經系統). For a person who has problem with these parts, to drink overly (過度地) strong tea may cause heart and blood pressure illness, or even make the old illnesses much worse.
Do not drink too much tea when you are eating.
Drinking too much tea or strong thick tea may not be good for taking in many constant elements and trace elements(常量元素和微量元素). Also, people should not drink tea with milk or other milky food.
根據短文內容，選擇正確答案。
小題1:We can read the article in ________.

A．Life and Health	B．Chinese Culture
C．Fashion Times	D．Sports and Health

小題2:If you always work with computer, what kind of tea should you drink?

A．Green tea

B．Black tea

C．Strong tea

D．Hot tea

小題3:What does the underlined word “suitable” mean in this passage?

A．滑稽的

B．驚人的

C．可能的

D．合適的

小題4:Too much thick tea may cause ________.

A．skin problems

B．heart disease

C．headache

D．stomachache

小題5:Which of the following is NOT true?

A．If you have a stomachache, you should drink black tea.

B．Strong tea may make the body far too excited.

C．When we choose tea, we should know the characteristic and tastes of each kind of tea.

D．At tables, we should drink tea as much as possible because it’s good for our health.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

A thousand years ago Hong Kong was covered by a thick forest. As more and more people came to 　31　 in Hong Kong, these trees were cut down and burnt. Now there is　32　 forest left, though there are still some small areas covered with trees. We call these woods.
　　Elephants, tigers and many　33　 animals were living in the thick forest. When people came to live in Hong Kong, the　34　 began to die out. Early farmers grew rice and　35　 pigs and chickens in the valleys. They cut down the trees and burnt them. They needed　36　 to keep themselves warm in winter, to cook their food and to keep away the dangerous animals. Elephants quickly disappeared because there was not enough food for them. 　37　 did most of the wolves and tigers. Monkeys and many other animals soon　38　 in the same way.
　　You might think that there are no longer any animals in Hong Kong　39　 in the zoos. But there are still about 36 different animals　40　 there. One of the most interesting of Hong Kong's animals is the barking deer. These are beautiful little animals　41　 a rich brown coat and a white patch (補丁) under the tail. They look like deer but they are much smaller. They are less than two feet　42　. They make a noise rather like a dog　43　. In Hong Kong the barking deer has only a real enemy--　44　. People hunt these little animals though it is illegal (違法的). There are now not many barking deer left. So it is important　45　 people to protect wild animals.

小題1:

A．work　

B．study　

C．live 　　

D．enjoy

小題2:

A．many　

B．a few　

C．no 　　

D．not

小題3:

A．other

B．others　　

C．the other　

D．another

小題4:

A．people

B．animals　

C．plants 　

D．things

小題5:

A．grew

B．made　　

C．got　　

D．kept

小題6:

A．fire

B．hotness　

C．heat　　

D．stoves(爐子)

小題7:

A．so　　

B．Such　　

C．As　　

D．Nor

小題8:

A．lived　

B．died（死）

C．came　　

D．left

小題9:

A．besides

B．except　　

C．and

D．or

小題10:

A．live　

B．to live　

C．lived

D．living

小題11:

A．have　

B．without　

C．with　　

D．get

小題12:

A．high

B．higher　　

C．short

D．shorter

小題13:

A．Shouting

B．crying　

C．barking　

D．talking

小題14:

A．tigers

B．men　

C．wolves

D．elephants

小題15:

A．to 　

B．for　　

C．like 　　

D．of

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

Worries about school bus safety have drawn much attention. Now schools in some poor areas are looking   41  some other ways to go to school.
In the countryside, students are living in different places. And there isn’t enough   time for school buses to go around and pick up   42  student. So the most useful way is to let students living in the   43  village take a special school bus which is for them only. And the cost is   44 by their parents and the school.
Each bus is asked to carry only five students on the same route(路線) every day. Traffic police are also making daily checks to make sure drivers don’t carry__45  than 5 students. For a bus like this, the drivers can   46  make any money. So schools pay 300 yuan to drivers every month. The rest comes from the parents’ pockets（口袋）.
The roads to the students’ homes are rough(崎嶇的) and sometimes even dangerous,   47  falling rocks and narrow（狹窄的） bridges. After spending at least an hour on the road, the students finally make it home.   48 the money for taking a bus has increased and it’s not easy for parents to make money, they are glad to know that their children will   49  home safely each day. And they feel happy to see their child enjoy their time at school. But one girl says she’s seen the big yellow school   50  on TV, and wonders when she’ll ride one of her own.

小題1:

A．at

B．up

C．for

D．through

小題2:

A．all

B．every

C．both

D．either

小題3:

A．near

B．far

C．same

D．poor

小題4:

A．bought

B．spent

C．paid

D．took

小題5:

A．few

B．fewer

C．many

D．more

小題6:

A．always

B．often

C．sometimes

D．hardly

小題7:

A．and

B．but

C．with

D．without

小題8:

A．Because

B．Although

C．If

D．When

小題9:

A．get

B．arrive at

C．arrive in

D．reach to

小題10:

A．desks

B．bags

C．buses

D．bikes

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Many people think that water will never be used up（用盡）because there are many rivers and lakes. And the rain can make us get enough fresh water. Also, we can dig wells（井）to find fresh water under the ground. In fact, it is wrong and dangerous to think so. In some areas, people fight（爭斗）for fresh water. There is little rain there all year round. Let’s look around us. Some factories pour（倒）dirty water into rivers. And some people drop litter into rivers. We see polluted water here and there. We must do something to help people understand about preventing water from being polluted. It’s never too late if we take action right now.
小題1:Fresh water is from .

A．rivers and lakes

B．rain

C．wells

D．A, B, and C

小題2:It’s dangerous and wrong to .

A．get enough fresh water

B．think water is endless

C．dig a well

D．use up water

小題3:What do people fight for in some areas?

A．Fresh water.	B．Little rain.
C．Pouring dirty water.	D．Money.

小題4:What’s the main idea?

A．Water will never be used up.

B．How to find fresh water.

C．Water is everywhere.

D．Shortage（短缺）of fresh water.

查看答案和解析>>

同步練習冊答案

練習冊

高中

初中

小學