Although April did not bring us the rains we all hoped for, and although the Central Valley doesn’t generally experience the sound and lightning that can go with those rains, it’s still important for parents to be able to answer the youthful questions about thunder and lightning.

The reason these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, did you know that the lightning we see flashing down to the earth from a cloud is actually flashing up to a cloud from the earth? Our eyes trick us into thinking we see a downward motion when it’s actually the other way around. But then, if we believed only what we think and we see, we’d still insist that the sun rises in the morning and sets at night.

Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two clouds or between earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on earth every second.

Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of the lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval (間隔) between the flash and the crash to learn how lose they were to the actual spark (閃光).

1.According to the author, in the area of the Central Valley____.

A．rains usually come without thunder and lightning.

B．it is usually dry in April

C．children pay no attention to the two natural wonders.

D．parents are not interested in thunder and lightning.

2.We believe that lightning is a downward motion because_______.

A．we were taught so by our parents from our childhood.

B．we are taken in by our sense of vision.

C．it is a common natural sight.

D．it is a truth proved by science.

3.What is TRUE about lightning according to the passage?

A．Only a small number of lightning flashes occur on earth.

B．Lightning flashes usually jump from one cloud to another.

C．Lightning travels 5 times faster than thunder.

D．There are far more lightning strikes occurring on earth than we can imagine.

4.The underlined word “activity”  is most closely related to the word (s) _____.

A．cloud

B．lightning strikes

C．lightning flashes

D．thunderstorms

5.It can be concluded from the passage that _______.

A．we should not believe what we see or hear.

B．things moving downward are more noticeable.

C．people sometimes may have wrong ideas about ordinary phenomena.

D．a(chǎn)dults are not as good as children in observing certain natural phenomena.

 

【答案】

1.A

2.B

3.D

4.D

5.C

【解析】

1.推理判斷題。 第二段中說：盡管the Central Valley一般不會經(jīng)歷下雨時伴隨雷電(的情況），但是……由此可知在Central Valley下雨時通常沒有雷電。

2.細(xì)節(jié)理解題。結(jié)合第二段Our eyes trick us into thinking we see a downward motion when it’s actually the other way around可知答案。

3.細(xì)節(jié)理解題。第三段第二句：由于地球上每天每分鐘發(fā)生2 000次雷雨，它們足夠造成地球上每秒100次的閃電。這說明閃電的次數(shù)要比我們想象的多。

4.猜測詞意題。第三段第二句說明有了雷雨才產(chǎn)生了閃電。

5.推理判斷題。第二段第三句：我們的眼睛使我們錯誤地認(rèn)為閃電是由上而下，而事實(shí)上卻相反。

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：哈爾濱市第六中學(xué)2009-2010學(xué)年高三上學(xué)期期末英語試題 題型：閱讀理解

Think back to this time last year. What was on your mind?
Most likely, you were thinking about finals or the holidays, although in this city I’ve noticed that thinking about the holiday is a fancy way of saying how much stuff will I get.
Now reflect on your thoughts for this holiday season. Most people are still thinking about the holidays, but I say that with a grain of salt. Everybody with a functioning brain and the ability to communicate knows that this holioday season comes with a pretty large price tag: the debt of all the hardships, both domestic and foreign, that we’ve faced over the past 12months.
Let’s face it: some of us will get everything we want over the holidays. But there are others whose parents have lost their jobs or who have lost jobs themselves because of the current economic situation. As much as we try to ignore it, there is still economic unrest in the blue and gold suburb.
In this situation, we have three options. One: We ignore the situation, like we seem to do for every bad thing that happens around us, because by God, it’s the American Way! Two: We recognize that our economy is shot, feel bad about it and spend our time wishing for the good old days. Three: We recognize that our economy is shot, but instead of moping, reflect on every good thing that we have going for us. Now, which option sounds best to you?
I spent a week this summer working in and around New York City with the city’s homeless population. Or so I thought. Although a lot of the people I served were in fact homeless, a significant number of them had a job or a home or both. The truth of the importance of this situation is that they and thousands of others across the country can’t afford even the most basic things of life, even while working two jobs. Yet no one that I met complained about their hardships. Instead, they took whatever I happened to give them(which was, more often than enough, not enough) and were genuinely grateful for what they had.
Wrap your heads around that statement for a second. These people worked their butts off to stay alive with minimal results, yet were overjoyed by a flimsy(脆弱的) paper plate with donated green beans on it. Although I am ashamed to admit it( both as a girthy figure and an affluent citizen), I have taken for granted most of my meals, let alone green beans, and I know for a fact that I am not alone.
64. 【小題1】According to the passage when people think about holidays they care much for ____.

A．where to spend their holidaysB．how to spend their holidays
C．what they can get for their holidaysD．who they should go to visit
65. 【小題2】When the author wrote the article, the economic situation in his country ____.
A．began to go bad.B．began to improveC．was still seriousD．was favorable for middle class.
66. 【小題3】The author wrote the article mainly to advise people____.
A．to be thankful in time of hardship.B．to spend their holidays in a wise way
C．to think little about their holidaysD．to help the country to sail through the crisis
67. 【小題4】It can be inferred from the passage that the writer is most probably ______.
A．a(chǎn) homeless childB．a(chǎn)n old professorC．a(chǎn) famous scientistD．a(chǎn) young student

查看答案和解析>>

科目：高中英語 來源：湖南省邵陽市二中2010年上期期中考試高一年二期英語試卷 題型：閱讀理解

.Life gets noisier every day and very few people can be free from noise of some sort or another. It doesn't matter where you live--in the middle of a modern city, or a faraway village--the chances are that you' 11 be disturbed by jet planes, transistor radios, oil - powered engines, etc. We seem to be getting used to noise, too. Some people feel quite lonely without background music while they' re working.
Scientific tests have shown that total silence can be a very frightening experience for a human being. However, some people enjoy listening to pop music which is very loud, and this can do harm to their eardrums(耳鼓). The noise level in some discos is far above the usual safety level for heavy industrial areas.
One recent report about noise and concentration(專心) suggested that although a lot of people say that any noise disturbs their concentration, what really influences their ability to concentrate is a change in the level of noise. It goes on to say that a background noise which doesn't change too much(music, for example) may even help people to concentrate.
56. According to this passage, the noise pollution __
A. has become the worst in the countryside  B. has become better in big cities
C. has spread from cities to villages      D. has been controlled in modern cities
57. What does background music refer to?
A. Music played while people are working.   
B. Music played in the backyard.
C. Noise that continues while you' re listening to other noises.
D. Music used to help people to concentrate.
58. Some people have their hearing harmed __
A. while listening to pop music            B. in complete silence
C. when speaking loudly                  D. while watching TV
59. Which of the following isn't included among the things causing noise?
A. trucks           B. motorcycles   C. electric engines   D. jet planes
60. Scientists have discovered that what prevents people from concentrating on something is
A. all kinds of noise                   B. great changes in the level of noise
C. background noise                  D. popular music          

查看答案和解析>>

科目：高中英語 來源：黑龍江省哈爾濱市第六中學(xué)2010屆高三上學(xué)期期末考試 題型：閱讀理解


Think back to this time last year. What was on your mind?
Most likely, you were thinking about finals or the holidays, although in this city I’ve noticed that thinking about the holiday is a fancy way of saying how much stuff will I get.
Now reflect on your thoughts for this holiday season. Most people are still thinking about the holidays, but I say that with a grain of salt. Everybody with a functioning brain and the ability to communicate knows that this holioday season comes with a pretty large price tag: the debt of all the hardships, both domestic and foreign, that we’ve faced over the past 12months.
Let’s face it: some of us will get everything we want over the holidays. But there are others whose parents have lost their jobs or who have lost jobs themselves because of the current economic situation. As much as we try to ignore it, there is still economic unrest in the blue and gold suburb.
In this situation, we have three options. One: We ignore the situation, like we seem to do for every bad thing that happens around us, because by God, it’s the American Way! Two: We recognize that our economy is shot, feel bad about it and spend our time wishing for the good old days. Three: We recognize that our economy is shot, but instead of moping, reflect on every good thing that we have going for us. Now, which option sounds best to you?
I spent a week this summer working in and around New York City with the city’s homeless population. Or so I thought. Although a lot of the people I served were in fact homeless, a significant number of them had a job or a home or both. The truth of the importance of this situation is that they and thousands of others across the country can’t afford even the most basic things of life, even while working two jobs. Yet no one that I met complained about their hardships. Instead, they took whatever I happened to give them(which was, more often than enough, not enough) and were genuinely grateful for what they had.
Wrap your heads around that statement for a second. These people worked their butts off to stay alive with minimal results, yet were overjoyed by a flimsy(脆弱的) paper plate with donated green beans on it. Although I am ashamed to admit it( both as a girthy figure and an affluent citizen), I have taken for granted most of my meals, let alone green beans, and I know for a fact that I am not alone.
64. According to the passage when people think about holidays they care much for ____.
A. where to spend their holidays             B. how to spend their holidays 
C. what they can get for their holidays        D. who they should go to visit
65. When the author wrote the article, the economic situation in his country ____.
A. began to go bad.   B. began to improve   C. was still serious   D. was favorable for middle class.
66. The author wrote the article mainly to advise people____.
A.to be thankful in time of hardship.    B. to spend their holidays in a wise way
C. to think little about their holidays     D. to help the country to sail through the crisis
67. It can be inferred from the passage that the writer is most probably ______.
A. a homeless child    B. an old professor   C. a famous scientist  D. a young student

查看答案和解析>>

科目：高中英語 來源：2011屆河北省南宮中學(xué)高三12月月考英語試題 題型：閱讀理解

Life gets noisier every day and very few people can be free from noise of some sort or another. It doesn’t matter where you live—in the middle of a modern city, or a faraway village—the chances that you will be disturbed by jet aero planes, transistor radios, oil-powered engines, etc. are almost everywhere.We seem to be getting used to noise, too. Some people feel quite lonely without background music while they are working.
Scientific tests have shown that total silence can be very frightening experience for human beings. However, some people enjoy listening to pop music which is very loud, and this can do harm to their eardrums(耳鼓).The noise level in some disco is far above the usual safety level for heavy industrial areas.
One recent report about noise and concentration(專心) suggested that although a lot of people say that any noise disturbs their concentration, what really affects their ability to concentrate is a change in the level of noise. It goes on to say that a background noise, which doesn’t change too much (music, for example) may even help people to concentrate.
【小題1】The best title for this passage is __________.

A．Noisy LifeB．Background NoiseC．Disturbed ConcentrationD．Changeable Noise
【小題2】From this passage, the pollution of noise __________.
A．doesn’t matter muchB．has become worse everywhere
C．has become better in big citiesD．has become better in villages
【小題3】 “Background music” in the passage means __________.
A．music played in the concertB．a(chǎn) kind of noise coming into your ears
C．music helps people to concentrateD．music played while people are working
【小題4】 Some people may have their hearing hurt __________.
A．while they are in completely silenceB．while they are dancing violently
C．while they are listening to pop musicD．while they are listening to soft music
【小題5】 Scientists have discovered that what prevents people from concentrating is ______.
A．a(chǎn)ny kind of noiseB．great changes in level of noise
C．background noiseD．various background music

查看答案和解析>>

科目：高中英語 來源：2014屆廣東省高一5月月考英語試卷（解析版） 題型：完型填空

There once lived a young man who was always unhappy and complained about his poverty. One day, he went to see a fortune teller to inquire how to become      16     . The fortune teller said, "Young man, you are already wealthy now."

"Where is my wealth?" the young man asked     17    .

"It is with you. Your     18     is (are) your wealth. You use them to see this world. You use them to see all the     19    things in this world. You can read, study and learn. Your hands are your wealth. You can use them to work. You can use them to hug your beloved ones. Your     20     are your wealth. You can go to any places..." the fortune teller said.

"You call these wealth? Everyone has them," the young man said.

"These are wealth. What you have now are not what others can luckily have. Are you     21     to give your eyes to me? I am willing to give you a lot of money to     22      for them," the fortune teller said.

"No, are you crazy? I am not going to exchange my eyes for money! They are     23     to me!" the young man     24     .

"Precisely, these are wealth to you. You will not exchange them for money. Furthermore, although a lot of people have their wealthy things, they do not     25     them or treasure them. They are not     26     to Heaven for giving them their wealth. They even complain that Heaven is unfair to them. Do you want to    27     one of them before you will treasure them?" the fortune teller said.

Everyone is wealthy. But we should not     28    it for granted. We need to treasure our wealth, take care of it and use it     29     . We should not overuse it because once it is     30     , it is gone forever. Remember it is our wealth that we do not want to lose.

1.A. happy           B. young             C. wealthy        D. poor

2.A. anxiously B. sadly     C. quietly         D. patiently

3.A. knowledge       B. skills              C. brain           D. eyes

4.A. ugly            B. beautiful           C. strange          D. useful

5.A. legs          B. cars                 C. jewels          D. banknotes

6.A. lovely        B. optimistic             C. angry          D. willing

7.A. charge        B. buy                  C. exchange       D. change

8.A. precious       B. useless               C. extra           D. special

9.A. wept    B. demonstrated          C. smiled          D. yelled

10.A. see      B. realize               C. keep            D. hold

11.A. grateful B. careful               C. meaningful        D. faithful

12.A. get     B. grasp                C. have             D. lose

13.A. take          B. make                C. set               D. sell

14.A. wrongly  B. wisely               C. naturally          D. really

15.A. old           B. used                C. gone             D. dead

 

查看答案和解析>>

同步練習(xí)冊答案