高考英語(yǔ)閱讀專(zhuān)項(xiàng)練習(xí)題

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　　高考英語(yǔ)閱讀專(zhuān)項(xiàng)練習(xí)題原文

　　On a clear night, the sky is a wonderful thing. Is there life out there somewhere? Is there another place like Earth where life might exist? If so, where is it? And how far away is it?

　　Recently, the American Kepler spacecraft found "22b" , a planet about six hundred light years away. It is the first planet in a " habitable zone" outside the solar system. That means the planet orbits a star like our Sun, but it is not too close to it, nor too far away. Because of this position, scientists say Kepler22b might have water, one of the main things needed for life.

　　The newly-discovered planet is about two and a half times larger than the Earth. It is closer to its star than we are to the Sun, but 22b's sun is smaller than ours, and doesn’t produce as much heat. Scientific instruments show the new planet could be made of gases, rocks or some kinds of liquids.

　　The Kepler spacecraft was named in honor of Johannes Kepler, the seventeenth century German astronomer. It was designed to examine a small part of the Milky Way galaxy and search for places like the Earth. It was made to inspect over 150,000 stars and measure how bright they are. It looks to see if a star's brightness gets less over a short time.

　　If a planet passes between Kepler and the star, it blocks out part of the light. That is what suggested to scientists that there is at least one planet orbiting the star. The instruments on Kepler show the new planet as a small, black dot moving across its sun. An important part of the Kepler experiment is on the Earth. After the spacecraft gathers information, scientists use the space telescopes on the ground.

　　Scientists have found over 2,300 new planets since Kepler was launched. About 200 of these are about the size of the Earth. Most are much larger, but it is the new planet's distance from its star that is important. For life to possibly exist there, the planet's temperature must not be too hot or too cold.

　　高考英語(yǔ)閱讀專(zhuān)項(xiàng)練習(xí)題題目

　　63. What can we learn about Kepler-22b?

　　A. Water must have been existed on it.

　　B. It takes humans about 600 years to get there.

　　C. It is made of gases, rocks and many kinds of liquids.

　　D. It is the first planet in outer space where life may survive.

　　64. The Kepler spacecraft was sent into space to ______.

　　A. show honor to Johannes Kepler

　　B. look for Earth-like planets in the sky

　　C. observe the changes of a star's brightness

　　D. measure the brightest star among 150,000 stars

　　65. In Paragraph 5 the author mainly tells us______.

　　A. how the Kepler system works

　　B. if the Kepler system sees a new planet

　　C. how the Kepler system uses the space telescopes

　　D. why an important part of the Kepler system remains on the Earth

　　66. What can we infer from the passage?

　　A. Life may exist on the new planet in another form.

　　B. It is colder on the new planet because its sun is smaller.

　　C. Life can't exist on planets which are much larger than the Earth.

　　D. The new planet's distance from its star decides on the possibilitv of life existence.

　　高考英語(yǔ)閱讀專(zhuān)項(xiàng)練習(xí)題答案

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