In old times，man considered lightning to be one of the great mysteries（神秘事物）of nature．In fact a single flash of lightning 1.6 kilometers long has enough electricity to light one million lamps．
The American scientist，Benjamin Franklin，was the first to suggest that lightning is in fact electricity formed between the earth and clouds high above．It happened in 1752．In the same year，he also built the first lightning rod（避雷針）to protect buildings from being struck by lightnings．
Modern science has discovered that lightning is very strong and powerful．A lightning between a cloud and the earth may be as long as 13 kilometers，and travels at a speed of 30 million meters per second．Scientists have the opinion that there are about 2000 million flashes of lightning per year．In the United States alone，it kills almost one person per day．
The safest place to be in during an electrical（電的）storm is a closed car．Outside，one should go close to low ground for cover and not stop under a tree．Also one should stay out of water and away from metal fences．Inside a house people should keep away from open doorways and windows and not touch wires or metal things．
小題1:From this passage we know lightning is____．
A．one of the great mysteries of nature．
B．electricity high above the earth．
C．a(chǎn) kind of light．
D．the sound from the clouds．
小題2:In the U．S____．
A．every person can see lightning every day．
B．a(chǎn)t least one person is killed by lightning every day．
C．there are about 6 million flashes of lightning per year．
D．a(chǎn)bout one person per day dies from lightning．
小題3:During a lightning storm，it would be best if you____．
A．stand under a tree．
B．go outside．
C．stay in a closed car．
D．stop near windows．
小題4:A lightning rod can______．
A．prevent accidents caused by lightning
B．stop lightning
C．protect buildings from being washed away．
D．delay the coming of lightning
小題5:A lightning between a cloud and the earth may be 13 kilometers long，and travels at
a speed of ______．
A．30 kilometres per second．
B．3000 kilometres per second
C．3 kilometres per second
D．30，000 kilometres per second

小題1:B
小題2:D
小題3:C
小題4:A
小題5:D

1. B 本題考查閃電的定義，根據(jù)in fact electricity formed between the earth and clouds high above可知B答案正確。
2. D 細(xì)節(jié)題。由下文In the United States alone，it kills almost one person per day，幾乎每天殺死一個(gè)人，故選D。
3. C 同樣是細(xì)節(jié)題的考查。文章The safest place to be in during an electrical（電的）storm is a closed car可知在緊閉的車(chē)?yán)锸亲畎踩�，故選C。
4. A 本題問(wèn)避雷針的作用，根據(jù)the first lightning rod（避雷針）to protect buildings from being struck by lightnings可知是用來(lái)保證不被雷擊，而C保護(hù)建筑物不被沖走不對(duì)，故選A阻止被雷擊事故的發(fā)生。
5. D 考查單位之間的轉(zhuǎn)換。文章說(shuō)30 million meters per second，即3000萬(wàn)米每秒，換成千米就是30000萬(wàn)千米，故選D。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

A new supermarket put on a notice inside the entrance. It said, “Remember, once a week, one of our customers(顧客) gets free goods(things that cost nothing). This may be your lucky day!” All the housewives who went to the supermarket had one great hope: to be the lucky customer who didn’t have to pay for her shopping.
For several weeks Mrs. Blake hoped to be the lucky customer. Unlike many other customers, she never gave up hope. The cupboards in her kitchen were full of things she did not need. She dreamed of the day, when the manager of the supermarket would come and say to her, “Madam, this is your lucky day and everything in your basket is free.”
One Friday morning, after she finished her shopping and had taken all the things to her car, she found that she had forgotten to buy tea. She went to the supermarket, got the tea and went towards the check-out. As she did so, she saw the manager of the supermarket come to her. “Madam,” he said, “congratulations! You are our lucky customer and everything in your basket is free!”
小題1:From the notice in the new supermarket, we know that       .
A．customers could buy things at lower prices once a week
B．the customer who bought the least goods didn’t have to pay
C．just one customer could get free goods once a week
D．the first customer who bought goods in the supermarket was the lucky one
小題2: What was Mrs. Blake’s hope?
A．To buy something cheaper in the supermarket.
B．To see the manager of the supermarket.
C．To buy everything she needed in the supermarket.
D．To be the lucky customer.
小題3: Why did Mrs Blake go back to the market after her shopping?
A．Because she wanted to see who would be the lucky customer.
B．Because she forgot to buy one more thing.
C．Because she had to pay for her shopping.
D．Because she wanted to get another chance to be the lucky customer.
小題4:Which of the following is NOT TRUE according to the passage?
A．The manager of the market was a clever businessman.
B．In fact the notice for free goods was a trick (詭計(jì)).
C．Mrs. Blake’s dream came true at last.
D．Mrs. Blake did shopping every week in the past several weeks.
小題5:What would Mrs. Blake probably say when she heard the manager’s words?
A．“Oh, my God!”B．“How lucky I am!”
C．“Bad luck!”D．“It’s very kind of you!”

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空

Many people have to work 46 . Some people do not mind. Other people think it’s terrible.
One man thinks that working at the weekends can be 47 . He is George Smith. Mr Smith works in an office, in Brighton, England.
On Saturday, May 24, 1986, he went to the office to do some work. After he 48  the lift, it stopped between floors. Mr Smith could not get out of the lift. He began to shout, but 49  heard him. Then Mr Smith remembered that it was a holiday in England. No one was going to come to work 50 Tuesday.
There was 51    for Mr Smith to do. He had to wait until one of his workmates came to work and found him. With nothing to 52  , Mr Smith was very hungry and had to sleep most of the time.
Early on Tuesday morning, one of his workmates came into work and found the lift 53  . When the lift was opened, Mr Smith came out cold, weak, and tired. He had been in the lift for 54  hours!
Now Mr Smith says, "I only use lifts if they have 55  in them. "
小題1:
A．from Monday to FridayB．a(chǎn)t the weekends
C．on weekdaysD．from morning till night
小題2:
A．dangerousB．happyC．a(chǎn)ngryD．free
小題3:
A．got offB．got intoC．got out ofD．got to
小題4:
A．someoneB．everyoneC．no oneD．either
小題5:
A．onB．toC．fromD．until
小題6:
A．nothing B．something C．a(chǎn)nything D．everything
小題7:
A．read or write B．eat or drink C．cookD．know the time
小題8:
A．was not thereB．was not closedC．was not workingD．was working
小題9:
A．nearly 24B．a(chǎn)bout 40 C．more than 60D．over 94
小題10:
A．pansB．bedsC．exitsD．telephones

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空

For years I wanted a flower garden. I’d spend hours   31  different things I could plant. I believe they would look nice together.
But then we had Mattew. And Marvin. And the twins, Alisa and Alan. And then Helen. Five children! I was too   32   raising them的grow a garden.
Money was tight（拮據(jù)）,as well as time. Often when my children were little, one of them would want something expensive. And I’d have to say, "Do you see a money tree outside? Money doesn’t    33   on trees, you know."
34  , all five got through high school and college（大學(xué)）and were off on their own. I started thinking again about having a garden. Then, one morning on Mother’s Day, I was working in my kitchen. Suddenly, I looked out of the window and there was a   35  tree, planted right in my garden. I thought it   36   be a weeping willow(垂柳),because I saw things    37   around on all its branches（樹(shù)枝）.Then I put my  38   on and I couldn’t believe what I saw. There was a money tree in my garden!
I went outside to have a look. It was    39   ! There were dollar bills all over that tree. There was also a note in the tree. It    40   ,"We all love you, Mom."
小題1:A-talking about    B. thinking of     C. preparing for       D. looking after
小題2:
A．tiredB．carelessC．busyD．poor
小題3:
A．growB．makeC．comeD．get
小題4:
A．ClearlyB．NaturallyC．CertainlyD．Finally
小題5:
A．moneyB．newC．youngD．tall
小題6:
A．shouldB．canC．mustD．need
小題7:
A．blowingB．turningC．producingD．a(chǎn)ppearing
小題8:
A．overcoatB．hatC．shoesD．glasses
小題9:
A．strangeB．trueC．specialD．perfect
小題10:
A．saysB．writesC．showsD．describes

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


To Give up or Not to Give up as Class Monitor??
Dear Brad, ?
In about 3 months, I will take a very important test. If I pass the test with good grades, I can get to the 10th grade and choose a good school to study in. Now I am trying my best to achieve this. At the same time, I’m the monitor in my class, which means I should do lots of things for my class. ① I am so busy with my school-work and duties as monitor that I don’t have enough time to keep a balance between them . Gradually I become lazy. ②The other day, my head teacher told me that she was disappointed in my poor performance as class monitor . Her words really discouraged me. ?
What should I do now, to give up or not to give up as class monitor? I must do my best in school because how well I do will influence where I go after this school year is over and it can affect the rest of my life. Being class monitor is also a valuable learning experience because my teacher trusts me to be a good leader. ③ I don’t want to go to my parents for suggestions, for they will get worried about me . Can you tell me how to choose??
Yours, ?
Gates?
小題1:根據(jù)①處內(nèi)容，完成下面的句子。（每空一詞）?
I am    busy with my school-work and duties as monitor      have enough time to keep a balance between them. ?
小題2:根據(jù)②處內(nèi)容，完成下面的句子。（每空一詞）?
The other day, my head teacher said to me, “             disappointed in your poor performance as class monitor.”?
小題3:將③處翻譯成漢語(yǔ)。?

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

There was a man who had a little son. He loved him very much. Every day after work the man would come home and play with the little boy.
When the man came home from work one night, he found that he had some extra work to do. And he wasn’t able to play with his little son. He wanted to give the boy something to keep him busy. So, looking around his study, he saw a magazine with a large map of the world on the cover. He got an idea. He patiently tore the map up into pieces. Then he led his son into the dining room and spread the pieces on the table. He explained to the boy that it was a map of the world. He told the boy to put it back together and they could play together when he finished. Surely this could keep the child busy for hours, he thought.
After about thirty minutes, the boy came to the man and said, “Okay, it’s finished, Dad. Can we play now?”
The man was surprised, saying, “That’s amazing! How did you do that?” The boy said, “It was easy. On the back of the page was a picture of a man. When I put the man together, the whole world appeared completely.”
小題1: Why couldn’t the man play with his son that night? 
A．He had to read a magazine.B．He had some extra work to do.
C．He had to learn something about a map.D．He had to stay at his office for extra work.
小題2:What did the man ask his son to do?
A．To read the magazine to find the map.
B．To tear the map of the world up into pieces.
C．To put the pieces of the map of the world back together.
D．To clean the dining room first, and then read the map of the world.
小題3: How long did it take the boy to finish the work?
A．A few hours.B．About an hour.C．About half an hour.D．The whole night.
小題4:Which of the following is TRUE about the passage?
A．It’s a report about a father’s extra work.
B．It’s a story between a father and his clever son.
C．It’s an advertisement for the map of the world.
D．It’s a poster about how to deal with parents’ problems.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Tom arrived at the bus station quite early for Paris bus. The bus for Paris would not leave until five to twelve. He saw a lot of people waiting in the station. Some were standing in line, others were walking around. There was a group of schoolgirls. Their teacher was trying to keep them in line. Tom looked around but there was no place for him to sit.
He walked into the station cafe. He looked up at the clock there. It was only twenty to twelve. He found a seat and sat down before a large mirror on the wall. Just then, Mike, one of Tom’s workmates, came in and sat with Tom.
“What time is your bus?” asked Mike.
“There’s plenty of time yet,” answered Tom.
“Well, I’ll get you some more tea then,” said Mike.
They talked while drinking. Then Tom looked at the clock again. “Oh! It’s going backward(倒行)!” he cried. “A few minutes ago it was twenty to twelve and now it’s half past eleven.”
“You’re looking at the clock in the mirror.” said Mike. Tom was so sad. The next bus was not to leave for another hour. Since then Tom has never liked mirrors.
小題1:The bus for Paris would leave at____________.
A．12: 05B．11: 55C．11: 30D．11: 40
小題2:Tom went into the station cafe because ______.
A．Mike asked him to have a cup of tea
B．he didn’t like to stay with the schoolgirls
C．it was quite early and he could find a seat there
D．he wanted to have a drink with his workmate there
小題3: ____________, so he was sad.
A．There was something wrong with the clock
B．Tom couldn’t arrive in Paris on time
C．Tom couldn’t have coffee with Mike
D．The train arrived late that day

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Years ago, I lived in a building in a large city. The building next door was only a few feet away from mine. There was a woman who lived there, whom I had never met, yet I could see her sit by her window each afternoon, sewing(針線活) or reading.
After several months had gone by, I began to notice that her window was dirty. Everything was unclear through the dirty window. I would say to myself, “I wonder why that woman doesn’t wash her window. It really looks terrible.”
One bright morning I decided to clean my flat, including washing the window inside.
Late in the afternoon when I finished the cleaning, I sat down by the window with a cup of coffee for a rest. What a surprise! Across the way, the woman sitting by her window was seen clearly. Her window was clean!
Then it dawned on me. I had been criticizing(批評(píng)) her dirty window, but all the time I was watching hers through(通過(guò)) my own dirty window.
That was quite an important lesson for me. How often had I looked at and criticized others through the dirty window of my heart, through my own mistakes?
Since then, whenever I wanted to judge (評(píng)判) someone, I asked myself first, “Am I looking at him through my own dirty window?”
Then I try to clean the window of my own world so that I may see the world about me more clearly.
小題1:The writer couldn’t see everything clearly through the window because _________.
A．the woman’s window was dirty
B．the writer’s window was dirty
C．the woman lived nearby
D．the writer has short sight
小題2:The writer was surprised that _________.
A．the woman was sitting by her window each afternoon, sewing or reading
B．the woman’s window was clean as soon as he washed his own window
C．the woman did cleaning in the afternoon, so the writer could see the woman clearly
D．the woman’s window was still terrible after he washed his own window
小題3: “It dawned on me” probably means “_________”.
A．I began to understand it
B．it cheered me up
C．I knew the woman’s window grew light
D．it began to get dark
小題4:It’s clear that _________.
A．the writer didn’t meet the woman ago
B．the writer often washed the window
C．they both worked as cleaners
D．they lived in a small town
小題5:From the passage, we can learn _________.
A．one shouldn’t criticize others very often
B．one should often make his windows clean
C．one must judge himself before he judges others
D．one must look at others through his dirty windows

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Two farmers were on their way home one evening after a hard day’s work. Both were tired. They happened to look up at the sky and saw a black cloud overhead.
"Ah!" said one farmer, "tomorrow we shall have rain and the rice will grow well." The second answered, "Nonsense (胡說(shuō)), the rain will only kill the crops (莊稼)."
So they began to quarrel (爭(zhēng)吵). Just then a third farmer came along and asked them why they were quarreling. Both farmers explained about the black cloud.
"What cloud?" asked the third farmer. They all looked at the sky. The cloud was no longer there.
Choose the right answer
小題1:The two farmers were _____.
A．going homeB．going to the field
C．going to workD．going to see their friend
小題2:The two farmers _____ on that day.
A．had a holidayB．didn’t work
C．worked hardD．wanted to quarrel with each other
小題3:When there are black block clouds in the sky, _____.
A．it will rain soonB．it will be fine
C．it will get hotD．the sun is shining brightly
小題4:The two farmers fought in words because _____.
A．they were hungryB．it rained
C．one said the rain would do good to the crops and the other didn’t think so
D．they both hoped for rain
小題5:The third farmer came with and said to the other two. He _____.
A．wanted to make friends with themB．joined them in the quarrel
C．wanted to know why they were quarrelingD．had nothings to do

查看答案和解析>>

同步練習(xí)冊(cè)答案