Planet Hunter

  When Geoff Marcy was 14, his parents bought him a telescope. Every night, he would go onto the roof outside his window to see the wonders of the sky.

  "What excited me most was whether there were planets(行星)in other solar(太阳的)systems where life might exist," he says. "I decided to try to find planets orbiting(沿............. 轨道运行)other stars like our sun.”

And he did. " My fellow researcher Paul Butler and I found our first planet in 1995 ,”Dr. Marcy says. "We worked for ten years without finding anything!But we stuck with it,and our patience paid off.”

  Since then,the two scientists have discovered 65 of the more than 100 planets found orbit?ing other stars. Dr. Marcy and Dr. Butler also spotted the first " family" of three planets. In June 2002 they announced another discovery:a Jupiter-like(像木星一样的)planet orbiting star 55 Cancri.

  At first, the two researchers found only planets that orbit close to stars. Recently, the sci?entists found planets farther out. The planet orbiting 55 Cancri is a major breakthrough;it is the first sighting of a large gas planet about the same distance from the star as Jupiter is from the sun.

  Why is this important? Scientists think that life on the earth may exist because of two spe?cial features(特征)in our solar system. The first is Jupiter.

  "Because it's so big,Jupiter pulls comets and asteroids(小行星),or they all come and hit the earth. " Dr. Marcy explains. " Without Jupiter, life on the earth would likely have been destroyed.”

  A second feature is that the earth is a rocky planet where liquid water,which is necessary for life,can exist. Unlike gas planets,rocky planets like the earth have surfaces where water can gather in pools and seas,which may support life. A huge space exists between the Jupiter?like planet and two other planets that lie close to 55 Cancri. Is there an Earth-like planet in the space, too small for us to notice? If so,says Dr. Marcy, "We would have two striking similarities to our solar system:a Jupiter-like planet and an Earth-like planet. And there may be life!"

(   ) 1. What can we learn about Dr. Marcy from the passage?

A.     He is fond of watching Jupiter.

B.     He is from a scientist family.


 

C.     He dislikes working with Paul Butler.

D.     He is interested in finding life in outer space.

(   ) 2. Which of the following is true of the recent discovery?

A.     The planet is not as protective as Jupiter.

B.     The planet is close to star 55 Cancri.

C.     The planet proves to be a gas planet.

D.     The planet is as large as Jupiter.

(   ) 3. Dr. Marcy thinks that life may exist in the 55 Cancri system because      

A.     he has found the system similar to the solar system

B.     he has discovered an Earth-like planet there

C.     he has discovered a rocky planet there

D.     he has found signs of life in the system

(   ) 4. "But we stuck with it" (in Paragraph 3) means      

A.     they felt discouraged

B.     they carried on with it

C.     they failed in their attempt

D.     they made some progress

  Often referred to as "The Lost City of the Incas",Machu Picchu is probably the most fa?miliar symbol of the Inca Empire(印加帝国).It was built around the year 1450, but abandoned (遗弃)a hundred years later,at the time of the Spanish conquest of the Inca Empire. Forgotten for centuries, the site was brought to worldwide attention in 1911 by Hiram Bingham, an Amer?ican historian. Since then,Machu Picchu has become an important tourist attraction. It was an?nounced a UNESCO World Heritage Site in 1983. It is also one of the New Seven Wonders of the World. But it has recently come to light that the site may have been discovered and robbed secretly as early as in 1867 by a German businessman, Augusto Beras.

  7,000 feet above sea level and located on a small hilltop between the Andean Mountain Range, the majestic city rises above the Urabamba Valley below. Then a huge wall,the Tai-wan-kai, handrails are all seems to be naturally formed in the same precipice. Machu Picchu is surrounded by tropical jungle. Separated into three areas―farming,urban, and religious(宗教的)一the structures are arranged so that the function(功能)of the buildings matches the form of their surroundings. The agricultural terracing and ditches(梯田和沟渠)take advantage of the nat?ural slopes(斜坡);the lower areas contain buildings occupied by farmers and teachers, and the most important religious areas are located at the crest of the hill,over-looking the fresh green Urabamba Valley thousands of feet below.

  Hikers,tourists, and the early explorers describe similar emotions as they'climb their way through the Inca Trail. Many call the experience magical and say the area creates a wonderful green paradise, making it a must for anyone who travels to Peru.

(   ) 1. Augusto Berns was said to      

A.     report his find to the government at the first time

B.     be the first one who discovered the ruins of Machu Picchu

C.     help make Machu Picchu a UNESCO World Heritage Site

D.     work together with Bingham on research about Machu Picchu

(   ) 2. The underlined word "crest" in the second paragraph can be best replaced by

A. bottom    B. centre C. valley    D. top
(   ) 3. The three areas of Machu Picchu were arranged mainly according to      

A.     the quality of soil

B.     the number of people

C.     the need of transportation

D.     the landform and social ranks

(   ) 4. What would be the best title for the passage?

A.     New Seven Wonders of the World

B.     A Brief Introduction to Machu Picchu

C.     Who Found "The Lost City of the Incas"

D.     Why Machu Picchu Became a Hot Tourist Site

 The yearly marathon ( a long-distance running race of 42. 195 km) in my town usually occurs during a heat wave. My job was to follow behind the runners in an ambulance 1 any of them needed medical attention.

  "We're supposed to stay behind the 2 runner,so take it slowly," I said to the driver, Doug,as the race started.

The front-runners started to 3and then my eyes were 4 to the woman in blue silk running shorts and a loose white T-shirt.

  We knew we were already watching our "last runner". Her 5 were so crippled(残废的)that it seemed almost impossible for her to be able to walk, 6 alone run a marathon.

  Doug and I 7in silence as she slowly moved forward. 8 ,she was the only runner left in sight. Tears streamed down my face when I watched with respect 9 she pushed for?ward with great 10 through the last miles.

When the finish line came into sight, rubbish lay everywhere and the 11 crowds had gone home, 12   ,standing straight and ever so proud 13 a lone man. He was 14 one end of a ribbon(缎带)of crepe paper(绉纸)  15 to a post. She slowly crossed through, leaving both ends of the paper fluttering(飘动)behind her.

  I do not know this woman's name,but that day she became a part of my  16 a part I often depend on. For her,it wasn't about 17 the other runners or winning a prize,but about 18 what she had set out to do,no matter 19 When I think things are too diffi?cult or get those " I-just-can't-do-it",I think of the last runner. Then 1 realize how 20 the task before me really is.

(   ) 1. A. so that    B. in case    C. even though    D. only if

(   ) 2. A. first    B. best    C. only    D. last

(   ) 3. A. run    B. separate   C. disappear    D. appear

(   ) 4. A. drawn    B. thrown    C. fixed    D. caught

(   ) 5. A. hands    B. legs    C. arms    D. body

(   ) 6. A. let    B. leave       C. speak    D. take

(   ) 7. A. watched    B. drove     C. observed    D. stared

(   ) 8. A. Quickly    B. Unluckily   C. Naturally    D. Finally

(   ) 9. A. since    B. before      C. as    D. until

(   ) 10. A. pain    B. determination C. strength    D. desire

(   ) 11. A. tired    B. waiting     C. cheering    D. impatient

(   ) 12. A. besides    B. therefore C. yet    D. fortunately

(   ) 13. A. stood    B. waited     C. came    D. had

(   ) 14. A. helping    B. catching C. holding    D. tying

(   ) 15. A. kept    B. tied      C. connected    D. led

(   ) 16. A. dream    B. feeling    C. idea    D. life

(   ) 17. A. following    B. hoping     C. encouraging    D. beating

(   ) 18. A. finishing    B. realizing   C. starting    D. winning

(   ) 19. A. where       B. how         C. when    D. what

(   ) 20. A. difficult    B. interesting    C. easy    D. hopeful

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