Science has told us too much about the moon that it is fairly easy to imagine what it would be like to get there. It is certainly not a friendly place. Since there is no air or water, there can be no life of any kind. There is not much variety of scenery either. For mile after mile there are only flat plains of dust with mountains around them. Above, the sun and stars shine in the black sky. If you step out of the mountain shadow, it means moving from the severe cold into intense (强烈的) heat. These extreme temperatures continually break rocks away from the surface of the mountains. The moon is also a very silent world, for sound waves can only travel through air. But beyond the broken horizon, you see a friendly sight. Our earth is shining more brightly than the stars. From this distance, it looks like an immense (巨大的) blue, green and brown ball.

1.The moon is an unfriendly place because                   .

A. there is no air, no water, no life, no scenery       B. the sun and stars shine in the sky

C. temperature breaks rock away                         D. all of the above

2.Without           , the moon is a silent world.

A. man              B. air              C. sound                    D. water

3.According to the passage we know that                 .

A. the earth looks like a colored ball         

B. we can enjoy the scenery on the moon

C. every inch of the moon is very hot          

D. the extreme temperature breaks rocks away from the surface of mountains

4.We can conclude（断定） that “continually” means          .

A. sometimes            B. always               C. without break        D. frequently

5.The best title for the passage is                             .

A. An Unfriendly and Friendly Place             B. The Geography of the Moon

C. Moon, a Silent World                         D. The Moon

How many things can you see in the night sky? A lot! On a clear night you might see the Moon, some planets, and thousands of sparkling stars.

You can see even more with a telescope. And with bigger and bigger telescopes you can see more and more objects in the sky. And you can see those objects in more and more detail.

But scientists believe there are some things in the sky that we will never see. We won't see them with the biggest telescope in the world, on the clearest night of the year.

That's because they're invisible. They're the mysterious dead stars called black holes.

You might find it hard to imagine that stars die. After all, our Sun is a star. Year after year we see it up in the sky, burning brightly, giving us heat and light. The Sun certainly doesn't seem to be getting old or weak. But stars do burn out and die after billions of years.

As a star's gases burn, they give off light and heat. But when the gas runs out, the star stops burning and begins to die.

As the star cools, the outer layers of the star pull in toward the center. The star squashes into a smaller and smaller ball. If the star was very small, the star ends up as a cold, dark ball called a black dwarf. If the star was very big, it keeps squashing inward until it's packed together tighter than anything in the universe.

Imagine if the Earth were crushed until it was the size of a tiny marble. That's how tightly this dead star, a black hole, is packed. What pulls the star in toward its center with such power? It's the same force that pulls you down when you jump--the force called gravity. A black hole is so tightly packed that its gravity sucks in everything--even light. The light from a black hole can never come back to your eyes. That's why you see nothing but blackness.

So next time you stare up at the night sky, remember: there's more in the Sky than we can see! Scattered in the silent darkness are black holes--the great mystery of space.

68. According to the article, what causes a star to die?

A. As its gases run out, it cools down.                B. It has a collision with other stars.

C. It can only live for about a million years.         D. As it gets hotter and hotter, it explodes.

69. Which of the following statements is NOT true?

A. Black holes are dead stars.         B. Black holes have gravity.

C. Black holes are invisible.           D. There is nothing as mysterious as a black hole.

70. What happens AFTER a star dies?

A. It becomes invisible.                              B. It fails to Earth.

C. It burns up all of its gases.                     D. It becomes brighter and easier to see.

71. Why can't you see light when you look at a black hole?

A. Because most black holes are so far away.

B. Because the gravity of a black hole is so strong that it sucks the light inward.

C. Because as the star's gases burn, it stops giving off heat and light.

D. Because as a star cools, its outer layers pull in toward its center.

How did Ancient People Tell Time?

    Natural ways of keeping time．

    In ancient time．people had to use the sun and the moon to tell time．They got up when the sun came up and worked in the fields until the sun went down．

    Man-made things

    The sand c1ock is made of two glass balls joined by a narrow neck．The top ball was filled with sand．The sand slowly moved through the neck into the bottom ball．People knew how much time had passed when all the sand had fallen to the bottom ball．

People also made the water clock．They made a small hole near山e bottom of a pot．Then they filled the pot with water．Markings inside the pot showed how much time passed as the water dripped(滴)out of the hole．

                             Nature’s C1ocks in Living Things

                    Animals’ Body Clock

                    Animals do not need clocks to know time．They have a way of telling time by their bodies．Birds know when to fly to warmer places before winter．some animals know when to keep more f00d for the cold winter months．Some fish know when it is time to move up the river and lay eggs．

    Plants have their own clocks

    Plants als0 have their own clocks to keep time．Plants know when to open flowers or when to drop their leaves．

    The Body Clock in Human Beings

    People also h8ve their own body clocks．When we get used to our lives，our body clocks can be very accurate．It can tell us when it is time to wake up．It can also tell us when to eat or to go to sleep.

    64．How could an ancient farmer know when t0 go back home from the field in the daytime?

    A．By looking at the stars．    B．By looking at the moon．

    C．By looking at the sun．     D．By feeling whether tired or not．

65．According to the passage，how can animals know time?

    A．They use body clocks．        B．They ask other animals．

    C．They use the sun and the moon．D．They make something to tell time．

66．In what way is the sand clock the same as the water clock in telling time?

    A．Both of them have a neck．

    B．Both of them have two glass balls．

    C．Both of them can be used only once．

    D．Both of them give the time by quantity．

67．What is the best title for the whole passage?

    A．Man―made clocks    B．Nature’s clocks

    C．Time and clock         D．How people keep time

 (江西省抚州一中2009届高三第四次模拟考试B篇)

How many things can you see in the night sky? A lot! On a clearnight you might see the Moon, some planets, and thousands of sparkling stars.

       You can see even more with a telescope. And with bigger and bigger telescopes you can see more and more objects in the sky. And you can see those objects in more and more detail.

       But scientists believe there are some things in the sky that we will never see. We won't see them with the biggest telescope in the world, on the clearest night of the year.

      That's because they're invisible. They're the mysterious dead stars called black holes.

       You might find it hard to imagine that stars die. After all, our Sun is a star. Year after year we see it up in the sky, burning brightly, giving us heat and light. The Sun certainly doesn't seem to be getting old or weak. But stars do burn out and die after billions of years.

       As a star's gases burn, they give off light and heat. But when the gas runs out, the star stops burning and begins to die.

      As the star cools, the outer layers of the star pull in toward the center. The star squashes into a smaller and smaller ball. If the star was very small, the star ends up as a cold, dark ball called a black dwarf. If the star was very big, it keeps squashing inward until it's packed together tighter than anything in the universe.

       Imagine if the Earth were crushed until it was the size of a tiny marble. That's how tightly this dead star, a black hole, is packed. What pulls the star in toward its center with such power? It's the same force that pulls you down when you jump--the force called gravity. A black hole is so tightly packed that its gravity sucks in everything--even light. The light from a black hole can never come back to your eyes. That's why you see nothing but blackness.

       So next time you stare up at the night sky, remember: there's more in the Sky than we can see! Scattered in the silent darkness are black holes--the great mystery of space.

60. According to the article, what causes a star to die?

     A. As its gases run out, it cools down.                B. It has a collision with other stars.

C. It can only live for about a million years.     

D. As it gets hotter and hotter, it explodes.

61. Which of the following statements is NOT true?

    A. Black holes are dead stars.

    B. Black holes have gravity.

    C. Black holes are invisible.

    D. There is nothing as mysterious as a black hole.

62. W. hat happens AFTER a star dies?

    A. It becomes invisible.                          B. It fails to Earth.

    C. It burns up all of its gases.                     D. It becomes brighter and easier to see.

63. Why can't you see light when you look at a black hole?

    A. Because most black holes are so far away.

    B. Because the gravity of a black hole is so strong that it sucks the light inward.

    C. Because as the star's gases burn, it stops giving off heat and light.

    D. Because as a star cools, its outer layers pull in toward its center.                                                

完形填空

　　It was autumn. A thin white 1 rose over the valley. Peter, 11 years old, did not see it. He did not feel the cool wind 2 his face, for his thoughts 3 on a red and black blanket on the table, which was a 4 from his father to his grandfather. They said that Grandpa was 5 .

　　Peter had 6 believed Father would send Grandpa away. Now, there was the thing Father had bought 7 very morning. This was the last 8 he and Grandpa would have with each other. After washing the supper dishes, the old man took up the blanket,“What a 9 double blanket! I’ll not feel cold with it,”said the old man, 10 it over his knees.

　　“Oh, yes!”Peter said and tried to 11 back the tears in his eyes.

　　Just then in came two people, Father and the girl he was to 12 . The girl went up to Grandpa and said pettily,“I’ll not be 13 you in the morning, so I came over to say good-bye.”

　　“It’s nice of you,”said Grandpa.“Will you look at this? Isn’t it a fine blanket my son has 14 me to go away with?”

　　“Yes, really,”she said. She felt it and said 15 .“A double one! It must have 16 much. He doesn’t need a double one.”

　　“She is 17 , Father,”the boy said.“Here, Father,”He held out a pair of scisors(剪刀).“Cut the blanket into 18 . A single one is enough for an old man. We’ll 19 the other half.”

　　“What do you 20 by that?”asked Father.

“I’ll give it to you when you are old and I’m sending you away,”said the boy slowly.

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