Beyond two or three days, the world’s best weather forecasts are doubtful, and beyond six or seven they are worthless. The Butterfly Effect is the reason. For small pieces of weather―to a global for 题目和参考答案——青夏教育精英家教网—

题目内容

Beyond two or three days, the world’s best weather forecasts are doubtful, and beyond six or seven they are worthless.

The Butterfly Effect is the reason. For small pieces of weather―to a global forecaster, small can mean thunderstorms and blizzards (暴风雪)―any prediction becomes worse rapidly. Errors and uncertainties increase, from dust devils and storms up to continent-size eddies (旋涡) that only satellites can see.

The modern weather models work with net-like points sixty miles apart, and even so, some starting data have to be guessed, since ground stations and satellites cannot see everywhere. But suppose the earth could be covered with sensors placed one foot apart, rising at one-foot intervals all the way to the top of the atmosphere. Suppose every sensor gives perfectly accurate readings of temperature, pressure, humidity (湿度), and any other data a weatherman would want. Exactly at noon a powerful computer takes all the data and calculates what will happen at each point at 12.01, then 12.02, then 12.03… the computer will still be unable to predict whether Princeton will have sun or rain one month away. At noon the spaces between the sensors will hide fluctuations (波动) that the computer will not know about. By 12.01, those fluctuations will already have created small errors one foot away. Soon the errors will have added to the ten-foot scale, and so on up to the size of the globe.

72．A weather forecast ______ in the world.

A．is reliable within one or two days

B．is doubtful beyond 24 hours

C．becomes useless beyond two or three days

D．is still worthwhile in seven days

73．Usually there is a weather sub-station ______.

A．in every city B．every 60 miles

C．between two cities D．every one foot

74．Which of the following statements is true?

A．People have not placed sensors one foot apart in the atmosphere.

B．Scientists have already put sensors one foot apart in the world.

C．Every sensor gives perfectly accurate data a weatherman wants.

20090531

D．Ground weather stations and satellites can see every place on earth.

75．Our computer will not be able to know about fluctuations because ______.

A．the sensors are not good enough

B．they are hidden by the spaces between the sensors

C．they are too far away

D．they move very fast

ABAB

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Forget Twitter and Facebook, Google and the Kindle. Television is still the most influential medium around. Indeed ,for many of the poorest regions of the world, it remains the next big thing——finally becomes globally available. And that is a good thing, because the TV revolution is changing lives for the better.
Across the developing world, around 45% of families had a TV in 1995; by 2005 the number had climbed above 60%. That is some way behind the U.S. , where are more TVs than people, and where people now easily get access to the Internet. Five million more families in sub-Saharan Africa will get a TV over the next five years. In 2005 , after the fall of the Taliban（塔利班）,which had outlawed TV, 1 in 5 Afghans had one. The global total is another 150 million by 2013——pushing the numbers to well beyond two thirds of families.
Television’s most powerful effect will be on the lives of women. In India, researchers Robert Jensen and Emily Oster found that when TVs reached villages, women were more likely to go to the market without their husbands’ approval and less likely to want a boy rather than a girl. They were more likely to make decisions over child health care. TV is also a powerful medium for adult education. In the Indian state of Gujarat, Chitrageet is a popular show that plays Bollywood songs with words in Gujarati on the screen. Within six months, viewers had made a small but significant improvement in their reading skills.
Too much TV has been associated with violence, overweight and loneliness. However, TV is having a positive influence on the lives of billions worldwide. _K^S*5U.C
【小题1】 The underlined word “outlawed” in paragraph 2 probably means “ ”.

【小题2】Which of the following is TRUE according to the passage?

A．Americans used to get access to the Internet easily.

B．The world’s TV sets will total 150 million by 2013.

C．45% of families in the developing countries had a TV in 2005.

D．Over two thirds of families in the world will have a TV by 2013.

【小题3】The author intends to .

A．stress the advantages of TV to people’s lives

B．persuade women to become more independent

C．encourage people to improve their reading skills

D．introduce the readers some websites such as Google

【小题4】 What would be the best title for the passage?

A．TV Will Rule the World	B．TV Will Disturb the World
C．TV Will Better the World	D．TV Will Remain in World

【小题5】 From the passage, we know _______________.

A．It is impossible for women in India to get access to TVs now.

B．Robert Jensen and Emily Oster are Indian women.

C．Women in India are more likely to want a girl than a boy because of the arrival of TV.

D．Viewers of a popular TV show can improve their reading skills greatly in half a year.

D
　　Beyond two or three days，the world’s best weather forecasts are doubtful, and beyond six or seven they are worthless.
　　The Butterfly Effect is the reason. For small pieces of weather—to a global forecaster，small can mean thunder—storms and blizzards（暴风雪）—any prediction becomes worse rapidly. Errors and uncertainties increase，from dust devils and storms up to continent-size eddies（旋涡）that only satellites can see.
　　The modern weather models work with net-like points sixty miles apart，and even so，some starting data have to be guessed，since ground stations and satellites cannot see everywhere. But suppose the earth could be covered with sensors placed one foot apart，rising at one-foot intervals all the way to the top of the atmosphere. Suppose every sensor gives perfectly accurate readings of temperature，pressure，humidity（温度）, and any other data a weatherman would want. Exactly at noon a powerful computer takes all the data and calculates what will happen at each point at 12.01, then 12.02，then 12.03…the computer will still be unable to predict whether Princeton will have sun or rain one month away. At noon the spaces between the sensors will hide fluctuations（波动）that the computer will not know about. By 12.01，those fluctuations will already have created small errors one foot away. Soon the errors will have added to the ten-foot scale，and so on up to the size of the globe.
63．A weather forecast ____________ in the world.
A．is reliable within one or two days
B．is doubtful beyond 24 hours
C．becomes useless beyond two or three days
D．is still worthwhile in seven days
64．Usually there is a weather sub-station____________.
A．in every city 　　　　　　　　　　B．every 60 miles
C．between two cities 　　　　　　　 D．every one foot
65．Which of the following statements is true？
A．People have not placed sensors one foot apart in the atmosphere.
B．Scientists have already put sensors one foot apart in the world.
C．Every sensor gives perfectly accurate data a weatherman wants.
D．Ground weather stations and satellites can see every place on earth.
66．Our computer will not be able to know about fluctuations because ____________.
A．the sensors are not good enough
B．they are hidden by the spaces between the sensors
C．they are too far away
D．they move very fast

Forget Twitter and Facebook, Google and the Kindle. Television is still the nost influential medium around. Indeed ,fot many of the poorest regions(地区)of the world, it remains the next big thing——finally becomes globally available. And that is a good thing, because the TV revolution is changing lives for the better.
Across the developing world, around 45% of families had a TV in 1995; by 2005 the number had climbed above 60%. That is some way behind the U.S. ,where are more TVs than people, and where people now easily get access to the Internet. Five million more families in sub-Saharan Africa will ger a TV over the next five years. In 2005 , after the fall of the Taliban（塔利班）,which had outlawed TV, I in 5Afghans had one. The global total is another 150 million by 2013——pushing the numbers to well beyond two thirds of families.
Television’s most powerful effect will be on the lives of women. In India, researchers Robert Jensen and Emily Oster foumd that when TVs reached villages, women were more likely to go to the market without their husbands approval and less likely to want a boy rather than a girl. They were more likely to make decisions over child health careTV is also a powerful medium for adult education. In the Indian state of Gujarat,Chitrageet is a popular show that plays Bollywood songs with words in Gujarati on the screen. Within six months, viewers had made a small but significant(有意义的) improvement in their reading skills.
Too much TV has been associated with violence, overweight and loneliness. However, TV is having a positive influence on the lives of billions worldwide.
60.The underlined word “outlawed” in paragraph 2 probably means “       ”.
A.allowed          B.banned          C.offered            D.refused
61.Which of the following is TRUE according to the passage?
A.Americans used to get access to the Internet easily.
B.The world’sTV sets will total 150million by 2013.
C.45% of families in the developing countries had a TV in 2005.
D.Over two thirds of families in the world will have a TV by 2013.
62.The author intends to             .
A.stress the advantages of TV to people’s lives
B.persuade women to become more independnt
C.encourage people to improve their reading skills
D.introduce the readers some websites such as Google
63.What would be the best title for the passage?
A.TV Will Rule the World                  B.TV Will Disturb the World
C.TV Will Better the World                D.TV Will Remain in World

Across the developing world, around 45% of families had a TV in 1995; by 2005 the number had climbed above 60%. That is some way behind the U.S. , where are more TVs than people, and where people now easily get access to the Internet. Five million more families in sub-Saharan Africa will get a TV over the next five years. In 2005 , after the fall of the Taliban（塔利班）,which had outlawed TV, 1 in 5 Afghans had one. The global total is another 150 million by 2013——pushing the numbers to well beyond two thirds of families.

Television’s most powerful effect will be on the lives of women. In India, researchers Robert Jensen and Emily Oster found that when TVs reached villages, women were more likely to go to the market without their husbands’ approval and less likely to want a boy rather than a girl. They were more likely to make decisions over child health care. TV is also a powerful medium for adult education. In the Indian state of Gujarat, Chitrageet is a popular show that plays Bollywood songs with words in Gujarati on the screen. Within six months, viewers had made a small but significant improvement in their reading skills.

Too much TV has been associated with violence, overweight and loneliness. However, TV is having a positive influence on the lives of billions worldwide. _K^S*5U.C

1. The underlined word “outlawed” in paragraph 2 probably means “ ”.