题目内容
20.Astronomers have discovered a new PINK planet on the edge of our solar system.The small planet---given the name 2012VP 113 by scientists---is 80 times further from the Sun than the Earth.The newly discovered planet is 280 miles in diameter (直径) and is in a distant area of the solar system beyond Pluto (冥王星) once thought to contain no planets at all.
The object is only the second to be found in a mysterious area at the boundary between the solar system and outer space called the inner Oort Cloud (内奥尔特星云).
Astronomers now believe there may be thousands of previously unknown objects orbiting the Sun at this distance.And they believe that the pattern of the new planet's orbit suggests it is caused by the gravitational pull (引力) of a Super Earth that traces such a large orbit around the Sun that it has never been seen.
Astronomer Scott Sheppard,who found the new planet with his colleague,Chad Trujillo,said,"If you took a Super Earth and put it a few hundred astronomical units out,the gravity could shepherd (引导) this new object into the orbit it has."
The traditional view of the solar system had been that of nine planets orbiting the Sun.This was challenged in the 1990s when scientists found that Pluto is orbiting in thousands of icy objects called the Kuiper Belt.
Beyond this belt only one object,called Sedna,was thought to exist on its own.But the latest discovery suggests that our solar system has a number of planets at its edges.
32.Which of the following is TRUE?C
A.Astronomers now believe there must be thousands of previously unknown objects.
B.The object named 2012VP 113is only the first to be found in a mysterious area.
C.The latest discovery suggests our solar system has lots of planets at its edges.
D.The small planet is 80times further from the Earth than the Sun.
33.What can we know from the passage?D
A.Scott Sheppard found the new planet on his own.
B.In the 1990s,scientists found Pluto is orbiting in thousands of icy objects called Sedna.
C.The inner Oort Cloud was once thought to contain no planets at all.
D.Astronomers believe the gravitational pull of a Super Earth causes the pattern of the new planet's orbit.
34.What is the main idea of the passage?B
A.Astronomers name an object 2012VP 113.
B.Astronomers have discovered a new PINK planet on the edge of our solar system.
C.Astronomers prove the traditional view is wrong.
D.The latest discovery makes a big breakthrough in astronomy.
35.The passage is possibly taken fromB.
A.a science fiction
B.a news report
C.a poster
D.a magazine.
分析 本文主要写了天文学家在太阳系边缘发现了一颗新的粉红色行星.
解答 32.C 细节理解题.根据句子Astronomers now believe there may be thousands of previously unknown objects orbiting the Sun at this distance,这里天文学家相信是有可能而不是一定,所以A选项不正确;根据句子Astronomers have discovered a new PINK planet on the edge of our solar system一个新的发现但是不是第一次发现,所以选项B不正确;根据句子The small planet---given the name 2012VP 113 by scientists---is 80 times further from the Sun than the Earth可知D选项不正确.But the latest discovery suggests that our solar system has a number of planets at its edges可知最新的发现表明我们的太阳系边缘有许多行星.所以答案选C.
33.D 推理判断题.根据句子they believe that the pattern of the new planet's orbit suggests it is caused by the gravitational pull (引力) of a Super Earth that traces such a large orbit around the Sun that it has never been seen.他们认为,新行星轨道的模式表明,它是由一个超级地球的引力所造成的,它追踪太阳如此大的轨道,却从未见过它.由此可以推断出超级地球的引力导致了新行星轨道的形成.
34.B 主旨大意题.根据文章第一句Astronomers have discovered a new PINK planet on the edge of our solar system.天文学家在太阳系边缘发现了一颗新的粉红色行星.可知答案选B.
35.B 推理判断题.从文章第一句Astronomers have discovered a new PINK planet on the edge of our solar system.天文学家在太阳系边缘发现了一颗新的粉红色行星.概括出来了本文的主要内容,然后介绍了具体的细节,可以推测出这是一篇新闻报道,所以有可能出自一篇新闻报道,故答案选B.
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.