Astronomers working at Berkeley and Geneva have found nine new planets circling nearby stars. With this discovery,we now know of 50 extra-solar planets,also called exoplanets. That is a big increase from 41 planets last known five years ago.

   All these individual (單個的) planets move in an orbit around a star,which is called their parent star. The astronomers estimate that the Beta Pictoris star (繪架座(3 星) has a planet ten times the mass of Earth. It orbits (環(huán)繞軌道運行) at a distance of about 10. 5 billion kilometers,more than ten times the distance of the earth from the sun. And Vega (織女星) ,one of the brightest stars in the sky appears to have a planet twice the mass of Jupiter (木星) ,the largest planet in our solar system. This planet is 8 billion kilometers from its parent star. In comparison,our solar system seems almost tiny. The distance between Pluto (冥王星) ,the farthest planet in our solar system and the sun is “just” 5. 9  billion kilometers!

根據(jù)短文內(nèi)容,回答下列問題。

1. With this discovery,how many extra-solar planets are discovered?

2. Is Vega the only one brightest star in the sky?

3. Which planet is the largest in our solar system?

4. Which planet is the farthest planet in the solar system?

閱讀提示:本文主要介紹了太陽系的九大行星與母星的關系。

1. 50.細節(jié)理解題。由第一段中的第二句“With this discovery,we now know of 50 extra-solar planets,also called exoplanets. ”可知。

2. No,it isn’t.細節(jié)理解題。由第二段中的第四句“And Vega (織女星), one of the brightest stars in the sky appears to have a plan-et...”可知。

3. Jupiter.細節(jié)理解題。由第二段中的第四句“...the mass of Jupiter (木星 ) , the largest planet in our solar system* ”可知。

4. Pluto.細節(jié)理解題。由第二段中的最后一句“The distance between Pluto (冥王星 ) , the farthest planet in our solar system and the sun is ‘just’ 5. 9 billion kilometers! ”可知。

題目來源:2016年啟東中學作業(yè)本英語閱讀理解與完形填空4 > Week 19 Know our world 了解我們的世界

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閱讀下面短文,從短文后各題所給的四個選項A、B、C和D)中,選出可以填入空白處的最佳選項,并在答題卡上將該項涂黑。

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