閱讀理解

Oldest Ever Galaxy Found

  WASHINGTON(AP)-Astronomers believe they’ve found the oldest thing they’ve ever seen in the universe:It’s a galaxy(星系)far, far away from a time long, long ago.

  Hidden in a Hubble Space Telescope photo released earlier this year is a small point of light that European astronomers now calculate is a galaxy from 13.1 billion years ago.That’s a time when the universe was very young, just about 600 million years old.That would make it the earliest and most distant galaxy seen so far.

  By now the galaxy is so ancient it probably doesn’t exist in its earlier form and has already changed into bigger neighbors, said Matthew Lehnert of the Paris Observatory, lead author of the study published online Wednesday in the journal Nature.

  “We are looking at the universe when it was a 20th of its current age,” said California Institute of Technology astronomy professor Richard Ellis, who wasn’t part of the discovery team.“In human terms, we’re looking at a 4-year-old boy in the lifetime of an adult.”

  While Ellis finds the basis for the study “pretty good”, there have been other claims about the age of distant space objects that have not held up to careful examination.And some experts have questions about this one.But even the doubters praised the study as important and interesting.

  The European astronomers calculated the age after 16 hours of observations from a telescope in Chile that looked at light signatures of cooling hydrogen gas.

  Earlier this year, astronomers had made a general estimate of 600 to 800 million years after the Big Bang(宇宙大爆炸)for the most distant unclear points of light in the Hubble photograph, which was presented at an astronomy meeting back in January.

  In the new study, researchers focused on a single galaxy in their analysis of hydrogen’s light signature, further finding out the age.Garth Illingworth of the University of California, Santa Cruz, who was the scientist behind the Hubble image, said it provided confirmation for the age using a different method, something he called amazing “for such faint objects”.

(1)

We can learn from the passage that _________.

[  ]

A.

the universe came into being about 14 billion years ago

B.

the galaxy is believed to be the same as it was just born

C.

the newly-discovered galaxy is the oldest one in the universe

D.

the galaxy had traveled about 600 millions before the scientists found it

(2)

We can infer from the fourth paragraph that _________.

[  ]

A.

the universe is actually very young

B.

the life-time of the universe is surprisingly long

C.

the humans have been so able as to see far into the universe

D.

what we can see about the universe now is just the tip of the iceberg

(3)

What did some people doubt according to the fifth paragraph?

[  ]

A.

The importance of the discovery

B.

The truth of the discovery

C.

The actual age of the new galaxy

D.

The size of the new galaxy

答案:1.A;2.D;3.C;
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  The North Rim of the Canyon is quieter.It takes all day to drive there from the South Rim because there is only one bridge across the Colorado River.On the way, you go through Navado Indian lands, and a colourful pink desert called“The Painted Desert”.

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the same

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width

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If you go to visit the canyon you'd better go to ________.

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the South Rim

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[  ]

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閱讀下列短文,從每題所給的四個選項(A、B、C和D)中,選出最佳選項,并在答題卡上將該項涂黑。

第一節(jié):(共11小題;每小題2分,滿分22分)

My Best Enemy

Once again, I was in a new school. So was a girl in my class named Lisa. That’s where the similarities ended.

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Lisa was loved by the whole neighborhood. The bookstore owners lent her fashion magazines; the movie theater gave her free tickets…. Soon I was included in her magic world. We slept over at each other’s houses and spent every free moment together.

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C.How to make friends.         D.How to live a better life.

 

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