题目内容
19.What science story once told about other worlds far away is now a fact.Astronomers prove another solar (of the sun) system like ours with some planets in the constellation Andromeda (仙女座).Geoffrey Marcy is a professor of astronomy and physics at San Francisco State University.He says,"What we have found now is indeed a fully-grown system of planets around the star Upsilon Andromeda.It appears to have three planets,one close in,one at a middle distance,and one farther out.The star is slightly larger than our sun.The planets are huge,like our Jupiter(木星)."
Marcy's partner in this research,Debra Fischer,describes the solar system,"Here are the inner planet that goes around every 46 days,the middle planet that goes around every 242 days,and then the outer planet that goes around every three and a half to four years."
The sun of that solar system,Upsilon Andromeda,is so near and bright that it can be seen by using no equipment during summer and fall.
For twelve years astronomers searched the skies in the belief that if our sun has planets around it,surely others do,too.Geoffrey Marcy says,"And then starting three and a half years ago,we began finding for the first time planets singly,one planet here around one star…"
"When I look up at the stars now at night,I can imagine easily that every one of them has planets around them,"says Debra Fischer.
It was a tremble (shaking) in the star that led Marcy to the planets."The star rocks around because of the gravity of the planet as a dog owner gets pulled around by a little dog."
Can they support life?We don't know,because present technology is not advanced enough to determine what the planets are made of.That,Marcy says,is astronomy's next challenge.
32.What's the relation between Andromeda (A),Upsilon Andromeda system (U) and the mentioned three planets (P)?D
33.According to Debra Fischer,in the new solar system,B.
A.the larger a planet is,the shorter it takes to go around the star
B.the farther a planet is from the star,the longer it takes to go around the star
C.it takes all the planets around three and a half to four years to go around the star
D.the planets move around the star at the same speed
34.What led to Marcy's discovery of the planets?C
A.That any planet has gravity.
B.That a dog owner was pulled by his dog.
C.The tremble of Upsilon Andromeda.
D.That any star has its planets.
35.We can infer (推断) that the scientists areA.
A.to find out whether the planets can support life
B.to find means to travel to the planets
C.to communicate with the living beings on the planets
D.soon to be able to answer the question.
分析 本文讲述了Andromeda是一个星座,像太阳系;UpsilonAndromeda是一颗恒星,像太阳;three planets是它的三个卫星,科学家想了解一下这些行星能否有生命存在.
解答 32.D 推理判断题.通读全文可知Andromeda是一个星座,像太阳系;UpsilonAndromeda是一颗恒星,像太阳;three planets是它的三个卫星,因此可推出D项正确.
33.B 推理判断题.根据天文常识及本文所述,任何行星的卫星的运转周期不可能是一致的,越是远离行星,一般运转周期越长.
34.C 细节理解题.由倒数第二段It was a tremble (shaking) in the star that led Marcy to the planets."The star rocks around because of the gravity of the planet as a dog owner gets pulled around by a little dog."可知是由于Upsilon Andromeda的抖动导致其发现,故答案为C.
35.A 推理判断题.根据最后一句Can they support life?We don't know,because present technology is not advanced enough to determine what the planets are made of.That,Marcy says,is astronomy's next challenge可知,科学家想了解一下这些行星能否有生命存在,其他几项提到的不是本文重点或没提及.
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.
A. | calm | B. | quiet | C. | still | D. | silent |
A. | consists of | B. | is consisted of | C. | made up of | D. | consisting of |