. Evidence came up specific speech sounds are recognized by babies as young as six months old. A. which B. what C. that D. when 题目和参考答案——青夏教育精英家教网—

Mars Was Not Always Bitterly Cold

Scientists at the California Institute of Technology (Caltech) have reported evidence that Mars was warmer and wetter long ago than it is today. The Caltech scientists say they have directly established the temperature of Mars four billion years ago. At least, they established the surface temperature on part of the planet at that time. The researchers say it is the first such evidence to be discovered and presented.

The Caltech scientists say carbonate（碳酸盐） minerals formed on Mars at about eighteen degrees Celsius. They reached the finding after studying a meteorite（陨石） that had its beginnings near the Martian surface.

Today, the average temperature on Mars is sixty-three degrees below zero Celsius.

The finding was reported on the website of the National Academy of Sciences. Caltech Assistant Professor Woody Fischer helped to prepare the report. He says eighteen degrees Celsius is not especially cold or hot. He says this makes the finding extremely interesting. Knowing the temperature can give scientists an idea of the climate on Mars long ago. It can also help them decide whether the planet had liquid water. Spacecraft orbiting Mars have shown what appear to be rivers, lakebeds and mineral deposits. These pictures suggest that, at one time, water did flow there. Mars Rover vehicles and other spacecraft have confirmed the information.

Caltech Geology Professor John Eiler was another writer of the report. He says knowing the temperature of Mars from long ago provides valuable information. It shows that early in the planet's history, at least part of Mars could support a climate like that of Earth.

The meteorite the scientists examined is one of the oldest known rocks in the world. It is called the Allan Hills meteorite. Its name came from the place in Antarctica where it was found in 1984. The meteorite is believed to have blown loose from the Mars' surface when another space rock struck its "home."

1. The underlined word “establish” in Paragraph 1 probably means “___________”.

A．to set up

B．to make people accept a belief

C．to discover or prove

D．to start having a relationship with others

2.How did the scientists reach the finding?

A．By studying Allan Hills meteorite.

B．By using spacecraft orbiting Mars.

C．By studying minerals gathered on Mars

D．By studying a meteorite on the Martian surface.

3.According to the fourth paragraph, what have spacecraft orbiting Mars done?

A．Measuring the temperature of Mars.

B．Taking photos of the surface of Mars.

C．Confirming that there is water flowing on Mars.

D．Finding where human beings will probably land on Mars.

4.How did Allan Hills meteorite get its name?

A．From its original place on Mars.

B．From where it was found on the earth.

C．From the name of the scientist who found it.

D．From the name of the aircraft that discovered it

5. Where can we most probably read this passage?

A．In a biography of scientists.

B．In a geography magazine.

C．In an environment report.

D．In a science report.

I was shopping at my local supermarket, as I normally have for years. One particular day, I had done about 2 weeks worth of shopping and 36 toward the register to pay for my groceries. After the cashier had scanned my items and I had bagged them up, she stated that the 37 was $150.

I 38 into my back right pocket to grab the money to pay and noticed that there was no money there. I started to get 39 . I knew my pocket book was in the car and I was sure I had put the 40 in my back right pocket. I looked at the cashier with wet eyes and a 41 look not knowing what to do. There were people behind me on the line. She told me to speak with the courtesy counter (爱心柜台). I 42 and said, “Really? It's 43 , no one would hand that in!” But she 44 me to. “You never know…” she said.

I decided that there was no 45 in checking so I walked up to a woman behind the counter and said “I have to ask, did anyone 46 cash by any chance?” She asked “How much?" My face then 47 . “$200 in the form of one hundred dollar bills.” I replied. She said, “ 48 , yes, someone did!" I was so 49 ! “Who? I want to thank her.” She pointed to a young girl about 10 years old and says, “She did.”

I walked over to the mom and hugged her. She said, “It wasn't me, it was my 50 ” . I said “I know, I wanted to thank you both, 51 she found it ... it's because of you that I got this back.” I was so happy, I was almost in tears.

The next day at work, a person in another department 52 me tickets to the circus. He handed me 5 tickets. Almost 53 that young girls face popped (突然出现) in my head. After work I went back to the supermarket and stopped at the courtesy counter and asked if she had any idea who that woman was. She smiled and said, “Yes, She is a friend of mine”. Then I asked her to do me a favor and pass along these 5 tickets to her.

She told me that the family of the little girl who found my money were not rich so they would really 54 this. She also said that they had 3 children, so five was the 55 number of tickets!

1.A. showed B. retired C. hesitated D. headed

2.A. percentage B. product C. total D. luggage

3.A. reached B. searched C. checked D. looked

4.A. particular B. curious C. nervous D. serious

5.A. card B. money C. purse D. grocery

6.A. shocked B. moved C. inspired D. confused

7.A. laughed B. screamed C. cried D. blamed

8.A. reality B. evidence C. cash D. receipt

9.A. postponed B. encouraged C. discouraged D. promised

10.A. doubt B. need C. expense D. harm

11.A. work out B. turn in C. send for D. take away

12.A. broke up B. burst out C. send off D. lit up

13.A. Eventually B. Actually C. Finally D. Unfortunately

14.A. interested B. worried C. surprised D. absorbed

15.A. daughter B. husband C. mother D. friend

16.A. because B. although C. however D. besides

17.A. lent B. borrowed C. produced D. offered

18.A. simple B. constantly C. instantly D. previously

19.A. reject B. purchase C. ignore D. appreciate

20.A. unique B. perfect C. official D. typical

NASA’s Mars detector (探测器), Opportunity, succeeded in finding signs that water once existed on the planet. Opportunity landed on Mars in January. Scientists now believe that the planet could once have supported life.

This discovery was chosen by Science, one of the world’s leading magazines, as the most important scientific achievement of 2004 last Friday.

“This little, wheeled, one-armed box went around another planet and has done something no human has ever managed,” according to Science. “It has discovered another place in the universe where life could once have existed.”

“Although we still can’t say that life could have existed in this environment, it is now certain that there was water on Mars,” said Steve Squyres, one of the scientists working on the Mars mission. The evidence comes from pictures and chemical readings taken by Opportunity. It includes marks on rocks like those caused by flowing water on Earth and salty chemicals like those found in dried-out sea-beds. Scientists said the new evidence proved beyond doubt that water has existed on Mars. But it is still unknown whether the water on Mars was like an ocean or just ice.

While Opportunity has not found any signs of life, the presence of water means life is possible. “In everything we know about life on Earth, there is no example without liquid water,” Squyres said. “So water is important for the search for life on Mars.”

Researchers agree that a future mission (任务) should bring back physical samples (样品). But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth. “The problem here is how to get the samples back,” Squyres replied. “I think it is our responsibility to limit any risk.”

1.________ prove that water existed on Mars.

A．The physical samples with salty chemicals

B．The marks on rocks and salty chemicals

C．Scientific achievements of 2004

D．Creatures from Mars

2.Which of the following is TURE according to the text?

A．It is now certain that there was water on Mars.

B．The water on Mars was like an ocean.

C．Evidence of life on Mars has been found.

D．Search for life on Mars is a great risk to humans.

3.How did scientists draw the conclusion that there was water on Mars?

A．The world’s leading magazine has announced the fact.

B．Scientists have taken many pictures and chemical readings on the Mars.

C．Astronauts have got some rocks from Mars.

D．Scientists have made a study of the pictures and readings sent back by Mars detector.

4.It can be inferred that, if the creatures from Mars came to Earth, ________.

A．they would be kind to humans

B．they would be cruel to humans

C．they would be a great danger to Earth

D．it would be hard to say whether it would be a good news or bad new

第三节　完形填空（每小题1分）

阅读下面短文，从短文后各题所给的四个选项中，选出可以填入空白处的最佳选项。

Scientists find that hard-working people live longer than average men and women. Career women are 1 than housewives. Evidence (证据) shows that 2 are in poorer health than the job-holders. A study shows that whenever the unemployment (失业) rate increases by 1%，the death rate increases correspondingly (相应地) by 2%. All this comes down to one point: Work is helpful to heath.

Why is work good for health? It is because work keeps people busy, _3 loneliness and solitude (孤独). Researches show that people feel unhappy, 4 and lonely when they have nothing to do. Instead, the happiest are those who are 5 . Many high achievers who love their careers feel that they are the happiest when they are working hard. Work serves as a 6 between man and reality (真实). By work, people come into contact with each other. By collective (集体的) activity, they find friendship and warmth. This is helpful to health. The loss of work 7_ the loss of everything. It affects man spiritually (在精神上) and makes him liable to (易于) 8 .

9 , work gives one a sense of fulfillment (充实感) and a sense of 10 . Work makes one feel his value and status in society. When a 11 finishes his writing or a doctor successfully operates on a patient or a teacher sees his students grow, they are 12 beyond words (无法用语言表达).

From the above we can come to the conclusion 13 the more you work, 14 you will be. Let us work hard, 15 and live a happy and healthy life.

⒈ A. more healthier B. healthier C. weaker D. worse

⒉ A. career women B. the busy C. the jobless D. the hard-working

⒊ A. up with B. off C. in touch with D. away from

⒋ A. interested B. joyful C. concerned D. worried

⒌ A. busy B. free C. lazy D. empty

⒍ A. river B. gap C. channel D. bridge

⒎ A. means B. stands C. equals D. matches

⒏ A. success B. death C. victory D. disease

⒐ A. Besides B. Nevertheless C. However D. Yet

⒑ A. disappointment B. achievement C. regret D. apology

⒒ A. worker B. farmer C. writer D. manager

⒓ A. moved B. surprised C. sad D. happy

⒔ A. that B. which C. what D. when

⒕ A. the lonelier and weaker B. lonelier and healthier

C. happier and healthier D. the happier and healthier

⒖ A. study well B. studying well C. study good D. studying good

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