摘要: gear n. 齿轮,传动装置

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Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuels. It produces electricity with the power of animals. India has about eighty million bullocks. They do all kinds of jobs. They work in the fields. They pull vehicles through the streets. They carry water containers. Indian energy officials have been seeking ways to use less imported oil to provide energy. Scientists at the National Institute for Industrial Engineering in Bombay wondered whether the millions of bullocks could help. Many villages in India lack electricity, but they have many bullocks. And often the animals are not working. One job done by bullocks is to pump water out of the well. The animals do this by walking around and around in a circle. As they walk, they turn a heavy stick that makes the pump move. This simple technology is centuries old. Scientists thought that the same technology could be used to produce electricity. Bullocks walk in a circle only two or three times a minute. This is much too slow to produce electricity, but it can create enough power to turn a series of gears(齿轮). A large gear sits next to a smaller gear. As the large gear turns, it causes the smaller gear to turn. That gear turns an even smaller one. Each gear moves faster because it is a little smaller. The smallest gear may turn extremely fast. Clocks operate with gears. So do cars and so does the device invented by the Indian scientists to produce electricity.

       According to the officials in the United Nations, the idea is being tested at several places in India. The device is easy to operate and repair. And it can be moved easily. It costs about three hundred and seven dollars now to make such a device, but production of large numbers of them could cut the cost of each to about two hundred dollars.

1.Who first thought of using bullocks to provide energy?

     A.Indian energy officials.                   B.Scientists in India.

     C.Officials in the United Nations.             D.Researchers in Europe.

2.The jobs that bullocks do in India are mentioned in the passage except         .

     A.pulling vehicles                                    B.harvesting crops

     C.pumping water out of wells                  D.carrying food baskets

3.In the sentence “This simple technology is centuries old” in Paragraph One, “This simple technology” refers to_____.

     A.using bullocks to produce energy

     B.using pumps to draw water out

     C.having bullocks walk around to make the pump move

     D.connecting gears of different sizes to produce electricity

4.Which of the following can NOT be inferred from the passage?

     A.Once widely used, this device can help reduce the use of oil to provide energy.

     B.Indian government has decided to put the idea into practice at once.

     C.This idea will make progress as it is environment-friendly to the people.

     D.This device is designed in the way as clocks work with gears working on each other.

5.What is the U. N. officials’ attitude towards the idea?

       A.Approving.          B.Doubtful.        C.Negative.      D.Passive.

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A three-year independent investigation into the September 11, 2001 attack on the Pentagon has yielded new eyewitness evidence which, according to the Southern California-based researchers who conducted the investigation conclusively (and unfortunately), establishes as a historical fact that the violence which took place in Arlington that day was not the result of a surprise attack by suicide hijackers, but rather a military black operation involving a carefully planned and skillfully executed deception."
A CNN Reporter at the scene states that there is no evidence that a 757 hit the Pentagon.
   What hit the Pentagon? A Boeing 757 loaded with passengers and fuel right? Who was on Flight 757? According to the Flight Information there were No Arabs on it. That makes me wonder if Flight 757 actually existed at all.
  From the pictures and the videos, people can find that there are several doubtful points that need to be taken into consideration, for example the marker line on the grass in the satellite and ground pictures, the different colors of the smoke, the hole which the plane impacted, and the standing pylons (架线塔).
  Also, from the comparison of the different pictures, people can find some other strange points. For example, the gear (齿轮) is not the matching one. The wreckage of the plane is not the one from the American Airlines. The glass on the pavement of the pole is another doubtful point. The last thing that need considering is about the collapse. One of the gif video shows the plane impacting the Pentagon. The only problem with this video footage is that it has been altered (改变) and can not be fully trusted.
  These crash photos and videos shown here clearly have been doctored (篡改) and don't even match the physics of what happened. So where is the real video? It leaves me many questions. Is this a missile? It is a real enigma.
【小题1】Where can you possibly read this article?

A.In a newspaper.B.In a book.C.On a website.D.In a magazine.
【小题2】What the word “yielded” mean in the first sentence?
A.given inB.surrenderedC.given awayD.produced
【小题3】Which of the following doubtful points is not mentioned in the passage?
A.the colors of the smokeB.the model of the plane
C.the standing pylonsD.the marker line on the grass
【小题4】What is the author’s attitude towards the 911 investigation?
A.Positive.B.Neutral.C.Skeptical.D.Negative.

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Raleigh Equipe RW Road Bike

Item condition :New Read more about the condition .

Price :GB199.98or US$319.98

Item location :Newcastle upon Tyne , United Kingdom Ships to :Worldwide

Shipping: GB100.00International Tracked Postage

Item location :Newcastle upon Tyne, UK

Ships to :Worldwide

This machine gets you going for your first taste of fast riding on a drop bar machineWith the gear shifters(齿轮变速器)positioned to allow you easy changingyou can relax and speed off in style Equipped with 28 mm tyres and mudguard clearancethis bike can be perfectly adapted to suit several usesfrom commuting(通勤)through to riding the smoother country trails.

? Very lightly ridden and in excellent conditionBike has about 400 miles on ithas spent most of its time hanging in garage and works greatWill show signs of normal mountain bike use

1.What can we learn from this passage

AThe Raleigh Equipe RW Road Bike is suitable for different purposes

BThe Trek Supeif y World Racing Team Mountain Bike is in poor condition

CThe Specialized Stump Jumpber Mountain Bike is the most expensive of the three

DIts easy for people worldwide to buy the three bikes with the same shipping company

2.If you ordered the Raleigh Equipe RW Road Bikeyou are supposed to pay about__.

A. US490 .17? BUS439.17? CUS419.98? D. US499.98

3.What do the last two bikes have in common

ABoth were much ridden after being bought

BBoth have the same transportation expense

CBoth come from the UK and fit for mountain

DBoth are secondhand and sold from the USA

 

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A three-year independent investigation into the September 11, 2001 attack on the Pentagon has yielded new eyewitness evidence which, according to the Southern California-based researchers who conducted the investigation conclusively (and unfortunately), establishes as a historical fact that the violence which took place in Arlington that day was not the result of a surprise attack by suicide hijackers, but rather a military black operation involving a carefully planned and skillfully executed deception."
A CNN Reporter at the scene states that there is no evidence that a 757 hit the Pentagon.
   What hit the Pentagon? A Boeing 757 loaded with passengers and fuel right? Who was on Flight 757? According to the Flight Information there were No Arabs on it. That makes me wonder if Flight 757 actually existed at all.
  From the pictures and the videos, people can find that there are several doubtful points that need to be taken into consideration, for example the marker line on the grass in the satellite and ground pictures, the different colors of the smoke, the hole which the plane impacted, and the standing pylons (架线塔).
  Also, from the comparison of the different pictures, people can find some other strange points. For example, the gear (齿轮) is not the matching one. The wreckage of the plane is not the one from the American Airlines. The glass on the pavement of the pole is another doubtful point. The last thing that need considering is about the collapse. One of the gif video shows the plane impacting the Pentagon. The only problem with this video footage is that it has been altered (改变) and can not be fully trusted.
  These crash photos and videos shown here clearly have been doctored (篡改) and don't even match the physics of what happened. So where is the real video? It leaves me many questions. Is this a missile? It is a real enigma.
【小题1】Where can you possibly read this article?

A.In a newspaper.B.In a book.C.On a website.D.In a magazine.
【小题2】What the word “yielded” mean in the first sentence?
A.given inB.surrenderedC.given awayD.produced
【小题3】Which of the following doubtful points is not mentioned in the passage?
A.the colors of the smoke
B.the model of the plane
C.the standing pylons
D.the marker line on the grass
【小题4】What is the author’s attitude towards the 911 investigation?
A.Positive.B.Neutral.C.Skeptical.D.Negative.

查看习题详情和答案>>

A three-year independent investigation into the September 11, 2001 attack on the Pentagon has yielded new eyewitness evidence which, according to the Southern California-based researchers who conducted the investigation conclusively (and unfortunately), establishes as a historical fact that the violence which took place in Arlington that day was not the result of a surprise attack by suicide hijackers, but rather a military black operation involving a carefully planned and skillfully executed deception."
A CNN Reporter at the scene states that there is no evidence that a 757 hit the Pentagon.
   What hit the Pentagon? A Boeing 757 loaded with passengers and fuel right? Who was on Flight 757? According to the Flight Information there were No Arabs on it. That makes me wonder if Flight 757 actually existed at all.
  From the pictures and the videos, people can find that there are several doubtful points that need to be taken into consideration, for example the marker line on the grass in the satellite and ground pictures, the different colors of the smoke, the hole which the plane impacted, and the standing pylons (架线塔).
  Also, from the comparison of the different pictures, people can find some other strange points. For example, the gear (齿轮) is not the matching one. The wreckage of the plane is not the one from the American Airlines. The glass on the pavement of the pole is another doubtful point. The last thing that need considering is about the collapse. One of the gif video shows the plane impacting the Pentagon. The only problem with this video footage is that it has been altered (改变) and can not be fully trusted.
  These crash photos and videos shown here clearly have been doctored (篡改) and don't even match the physics of what happened. So where is the real video? It leaves me many questions. Is this a missile? It is a real enigma.
【小题1】Where can you possibly read this article?

A.In a newspaper.B.In a book.C.On a website.D.In a magazine.
【小题2】What the word “yielded” mean in the first sentence?
A.given inB.surrenderedC.given awayD.produced
【小题3】Which of the following doubtful points is not mentioned in the passage?
A.the colors of the smokeB.the model of the plane
C.the standing pylonsD.the marker line on the grass
【小题4】 What is the author’s attitude towards the 911 investigation?
A.Positive.B.Neutral.C.Skeptical.D.Negative.

查看习题详情和答案>>

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