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  A single rocket has not enough power to launch (发射) a satellite, but two or three rockets can do this work.

  Let us see how a three-stage rocket work. The first stage forms the tail; the second stage is in the middle; and the third stage is in front. The satellite sits in the nose of the third stage. Each stage has its own engines. The first stage is used for driving the rocket at the time of launching. It lifts the rocket into the sky. After a few minutes the first stage burns out and falls away. The engines of the second stage then drives the rocket. Later this stage burns out and falls away, and the weight of course gets lighter. As a result, the rocket travels faster. So it gains enough speed to break away from the earth's pull. When the last engine burns out, the launching is successfully ended. The satellite now travels in space by its own speed.

(1)Launching a satellite can be done at least by ________.

[  ]

A.one rocket
B.two rockets
C.three rockets
D.four rockets

(2)The farther a satellite travels from the earth, ________.

[  ]

A.the slower it will fly in the sky

B.the heavier its weight will become

C.the greater the pull of the earth will get

D.the weaker the pull of the earth will get

(3)Which of the following is TRUE about the satellite?

[  ]

A.The first stage forms the tail.

B.It connects with the second stage.

C.It can drive the rocket out of the earth.

D.It sits on the ground before being launched.

(4)From the passage we know that ________.

[  ]

A.a satellite will weigh little or nothing in space

B.a satellite will fly faster and faster in space

C.the third stage is the most important to a satellite

D.a satellite gains enough speed before the second stage falls

(5)The best title for this passage should be ________.

[  ]

A.The Pull of the Earth
B.Man-Made Satellites
C.How to Make a Rocket
D.How to Launch Satellites
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  New York , May 25?   Millions of volunteers (志愿者)joined in a long chain spreading 4 125 miles across the world's richest nation Sunday and burst into songs , reaching the highest development in the Hands Across America road to raise 50 million for the nation's homeless and hungry.

  

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[  ]

     

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阅读理解

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阅读理解

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阅读理解

ISC(HS)Reference No.S006864            New South Wales

Student Date of Birth:19/08/1988   Department of Education and Training

                     International Students Centre

Hong Xue              827-839 George Street PO Box 707

60 Waratah Street                Broadway NSW 21007

Croydon Park NSW 2133       Phone:(612)9217 4801 1300 302 456

                        Fax:(612)9212 6721

                 http://www.tafensw.edu.au/international/

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Dear Hong Xue,

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[  ]

A.

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B.

To warn the recipient not to do anything against his student visa regulations again.

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To tell the recipient how to contact his student advisor.

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To inform the recipient of the student visa regulations.

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What can be learned about the recipient from this letter?

[  ]

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He is under 18 and studies in Australia with his parents.

B.

He is required to come home every night according to the rules.

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He can stay with his friends on weekends if permitted.

D.

His student Visa has been cancelled.

(3)

To which address should the recipient reply if he feels like answering the letter?

[  ]

A.

Hong Xue at 60 Waratah Street, Croydon Park NSW 2133.

B.

Tracey Carlon at the Department of Immigration and Multicultural and Indigenous Affairs.

C.

Hong Xue at NSW Department of Education and Training.

D.

Tracey Carlon at 827-839 George Street, PO Box 707, Broadway NSW 21007.

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阅读理解

  So far, scientists have named about 1.8 million living species(物种), and that’s just a small part of what probably exists on Earth.With so many plants, animals, fungi, and other organisms covering the planet, it can be tough to figure out what type of spider is crawling up your leg or what kind of bird just flew by.

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Nonscientists will be able to add their own notes to the website.

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Visit Our Website Now

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