題目列表(包括答案和解析)
Move Earth – it’s no science fiction
LONDON – Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets (彗星) in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system.
This idea for improving our climate comes from a group of US National Aeronautics and Space Administration（NASA）engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams ,needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.
“Earth’s orbital speed would increase as a result and we would move to a higher orbit away from the Sun,” Laughlin said.
Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated. In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The sun is certain to heat up in about a billion years and so “seriously compromise” our biosphere（生物圈）— by cooking us.
That’s why the group decided to try to save Earth.
The plan has one or two worrying aspects, however. For a start, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation（誤算）in orbit could fire it straight at Earth—with deadly consequences.
There is also the question of the Moon. As the current issue of Scientific American magazine points out, if Earth was pushed out of its current position it is “most likely the Moon would be stripped away from Earth,” it states. This would greatly change our planet’s climate.
1.What makes the scientists plan to move Earth?
A．A few comets are moving to the direction of Earth.
B．Earth’s working life is coming to an end soon.
C．Earth will become too hot for mankind to keep alive.
D．The moon is moving farther and farther away from Earth.
2.If the plan is successful, Earth will have a working life of ______years.
A．12 billion B．6 billion C．18 billion D．24 billion
3.What serious problems might the plan cause according to the passage?
A．The comet might hit Earth and man might lose the moon.
B．Earth might be moved too far away and man might be frozen to death.
C．The comet might hit Jupiter or Saturn and never return to Earth.
D．Earth’s working life might be greatly shortened.
4.What does the underlined word “compromise” mean?
A．provide B．benefit C．share D．endanger
Move Earth – it’s no science fiction
LONDON – Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets (彗星) in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system.
This idea for improving our climate comes from a group of US National Aeronautics and Space Administration（NASA）engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams ,needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.
“Earth’s orbital speed would increase as a result and we would move to a higher orbit away from the Sun,” Laughlin said.
Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated. In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The sun is certain to heat up in about a billion years and so “seriously compromise” our biosphere（生物圈）— by cooking us.
That’s why the group decided to try to save Earth.
The plan has one or two worrying aspects, however. For a start, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation（誤算）in orbit could fire it straight at Earth—with deadly consequences.
There is also the question of the Moon. As the current issue of Scientific American magazine points out, if Earth was pushed out of its current position it is “most likely the Moon would be stripped away from Earth,” it states. This would greatly change our planet’s climate.
What makes the scientists plan to move Earth?
A．A few comets are moving to the direction of Earth.
B．Earth’s working life is coming to an end soon.
C．Earth will become too hot for mankind to keep alive.
D．The moon is moving farther and farther away from Earth.
If the plan is successful, Earth will have a working life of ______years.
A．12 billion B．6 billion C．18 billion D．24 billion
What serious problems might the plan cause according to the passage?
A．The comet might hit Earth and man might lose the moon.
B．Earth might be moved too far away and man might be frozen to death.
C．The comet might hit Jupiter or Saturn and never return to Earth.
D．Earth’s working life might be greatly shortened.
What does the underlined word “compromise” mean?
A．provide B．benefit C．share D．endanger
Move Earth — it’s no science fiction
LONDON — Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets（彗星）in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system.
This idea for improving our climate comes from a group of US National Aeronautics and Space Administration（NASA） engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams ,needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.
“Earth’s orbital speed would increase as a result and we would move to a higher orbit away from the Sun,” Laughlin said.
Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated. In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The sun is certain to heat up in about a billion years and so “seriously compromise” our biosphere（生物圈）— by cooking us.
That’s why the group decided to try to save Earth.
The plan has one or two worrying aspects, however. For a start, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation（誤算）in orbit could fire it straight at Earth—with deadly consequences.
There is also the question of the Moon. As the current issue of Scientific American magazine points out, if Earth was pushed out of its current position it is “most likely the Moon would be stripped away from Earth,” it states. This would greatly change our planet’s climate.
What makes the scientists plan to move Earth?
A. A few comets are moving to the direction of Earth.
B. Earth’s working life is coming to an end soon.
C. Earth will become too hot for mankind to keep alive.
D. The moon is moving farther and farther away from Earth.
If the plan is successful, Earth will have a working life of ______years.
A.12 billion B.6 billion C.18 billion D.24 billion
What serious problems might the plan cause according to the passage?
A. The comet might hit Earth and man might lose the moon.
B. Earth might be moved too far away and man might be frozen to death.
C. The comet might hit Jupiter or Saturn and never return to Earth.
D. Earth’s working life might be greatly shortened.
What does the underlined word “compromise” mean?
A. provide B. benefit C. share D. endanger
Which of the following best shows how the plan would work?
Move Earth—it’s no science fiction
LONDON-Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets（彗星）in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system.
This idea for improving our climate comes from a group of US National Aeronautics and Space Administration（NASA） engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams
,needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.
“Earth’s orbital speed would increase as a result and we would move to a higher orbit away from the Sun,”Laughlin said.
Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated.
In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The sun is certain to heat up in about a billion years and so “seriously compromise” our biosphere（生物圈）—by cooking us.
That’s why the group decided to try to save Earth.
The plan has one or two worrying aspects, however. For a start, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation（誤算）in orbit could fire it straight at Earth—with deadly consequences.
There is also the question of the Moon. As the current issue of Scientific American magazine points out, if Earth was pushed out of its current position it is “most likely the Moon would be stripped away from Earth,” it states. This would greatly change our planet’s climate.
1. What makes the scientists plan to move Earth?
A. A few comets are moving to the direction of Earth.
B. Earth’s working life is coming to an end soon.
C. Earth will become too hot for mankind to keep alive.
D. The moon is moving farther and farther away from Earth.
2.If the plan is successful, Earth will have a working life of ______years.
A.12 billion B.6 billion C.18 billion D.24 billion
3.What serious problems might the plan cause according to the passage?
A. The comet might hit Earth and man might lose the moon.
B. Earth might be moved too far away and man might be frozen to death.
C. The comet might hit Jupiter or Saturn and never return to Earth.
D. Earth’s working life might be greatly shortened.
4.What does the underlined word “compromise” mean?
A. provide B. benefit C. share D. endanger
5.Which of the following best shows how the plan would work?
A man has returned three library books to a Melbourne library—21 years overdue（誤期）.The books were returned to Sam Merrifield Library with a (n)__ 21___note and a $50 bill.
___ 22___Margaret Young was pleased that the books had been returned. They were in excellent___23__ , except for the one that the borrower admitted had been damaged by a___24___.
“They’re all spy books. We were just surprised and___25 ___that he has returned the books, ___26 ___after so many years,” Mrs. Young said.
The books were__ 27__on June 18, 1985 and would have to be paid almost $5,800 in overdue
__28__. But, because of the sweet letter and $50 note, Mrs. Young said all was__29__.
She said, “We thank him for returning the books and hope his conscience（良心）is __ 30 _. I’d like to think he can come back into the library one day to borrow more material__31__he returns it.”
To whom it may concern,
About 20 years ago I__32 __to return the three books to your library. In fact I__33__them.During that time, one of the books was damaged by my dog. I have enclosed all three books and a sum of money that will go some way toward __34__the damaged book.
My __35__were unforgivable; a thief is a thief. Please __ 36__my apology for stealing the books and for not having the courage to return them__37__.
I want you to know that for the last few years this theft has__38__my conscience and I am sorry I was so selfish to steal them in the first__39__. I hope this goes some small way to__40 __my actions.
1.A. explanation B. apology C. thank D. payment
2.A. Secretary B. Borrower C. Lender D. Librarian
3.A. condition B. situation C. state D. position
4.A. cat B. thief C. dog D. spy
5.A. regretful B. lucky C. thankful D. sorry
6.A. specially B. shortly C. especially D. simply
7.A. over B. good C. due D. away
8.A. fines B. money C. rewards D. payment
9.A. paid B. punished C. returned D. forgiven
10.A. eased B. calmed C. killed D. lost
11.A. even if B. as long as C. as though D. because
12.A. planned B. failed C. meant D. promised
13.A. borrowed B lent C. stole D. kept
14.A. replacing B. cleaning C. replying D. recreating
15.A. habits B. manners C. ways D. actions
16.A. receive B. refuse C. blame D. accept
17.A. sooner B. later C. more D. worse
18.A. affected B. felt C. bothered D. disappointed
19.A. place B. time C. chance D. thing
20.A. look up for B. make up for C. come up for D. take up for
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