A: What makes Uluru “change color ? B: It’s the minerals in the rock Uluru seem to change color. 查看更多

 

题目列表(包括答案和解析)

As we all know, the ocean moves. But waves breaking on the beach make the ocean fun. When you stand on the shore and look at the waves, it seems like the water is moving towards you. But the water is not really moving forward. The moving you see is wave energy. And wave energy comes from the wind.
Let’s think about how this works. As wave energy passes through the water, the energy makes particles (粒子) of water move up and down. Just give you an example of a wave passing under a basketball. We put a basketball on the sea. When the wind blows, a wave comes from behind the basketball. The basketball moves up to the top with the wave. Then the wave continues and leaves the basketball behind. The basketball looks lower, but it doesn’t move forward. That’s because the wave energy just moves the water which is under the basketball.
   So why can you see a wave knock you down on the shore?When a wave moves toward the shore, the bottom of the wave slows down because it meets the ocean floor. But the top, which is called crest(浪峰), keeps moving. The different action causes the wave to fall over or break onto the shore. If a wave is very large, it carries a lot of energy when it hits the land. As time goes by, waves can break up and carry away the rocks and other things on the shore. Shorelines are changing all the time because of wave action

  1. 1.

    ______ is really moving forward when you look at the wave

    1. A.
      Water
    2. B.
      The basketball
    3. C.
      Water and wave energy
    4. D.
      Wave energy
  2. 2.

    Match the sentences with the pictures and the right answer.
    (1) The basketball moves up to the top with the wave.
    (2) The basketball continues and leaves the basketball behind.
    (3) When the wind blows, a wave comes from behind the basketball.

    1. A.
      a—(2) b—(1) c—(3)
    2. B.
      a—(3) b—(1) c—(2)
    3. C.
      a—(1) b—(3) c—(2)
    4. D.
      a—(3) b—(2) c—(1)
  3. 3.

    Which of the following is NOT true according to the passage?

    1. A.
      Wave energy comes from the water
    2. B.
      Large waves carry plenty of energy
    3. C.
      Wave action makes shorelines change all the time
    4. D.
      The bottom of the wave is easy to slow down
  4. 4.

    The underlined word “it” ( Paragraph 3) refers to “________”

    1. A.
      particles of water
    2. B.
      the shore
    3. C.
      the wind
    4. D.
      the bottom of the wave
  5. 5.

    The main idea of this passage is ______

    1. A.
      what makes particles of water move
    2. B.
      how a basketball moves on the ocean
    3. C.
      how wave energy causes wave action
    4. D.
      why a wave can knock you down

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As we all know, the ocean moves. But waves breaking on the beach make the ocean fun. When you stand on the shore and look at the waves, it seems like the water is moving towards you. But the water is not really moving forward. The moving you see is wave energy. And wave energy comes from the wind.

Let’s think about how this works. As wave energy passes through the water, the energy makes particles (粒子) of water move up and down. Just give you an example of a wave passing under a basketball. We put a basketball on the sea. When the wind blows, a wave comes from behind the basketball. The basketball moves up to the top with the wave. Then the wave continues and leaves the basketball behind. The basketball looks lower, but it doesn’t move forward. That’s because the wave energy just moves the water which is under the basketball.

   So why can you see a wave knock you down on the shore?When a wave moves toward the shore, the bottom of the wave slows down because it meets the ocean floor. But the top, which is called crest(浪峰), keeps moving. The different action causes the wave to fall over or break onto the shore. If a wave is very large, it carries a lot of energy when it hits the land. As time goes by, waves can break up and carry away the rocks and other things on the shore. Shorelines are changing all the time because of wave action.

51. ______ is really moving forward when you look at the wave.

  A. Water      B. The basketball     C. Water and wave energy     D. Wave energy

52. Match the sentences with the pictures and the right answer.

   (1) The basketball moves up to the top with the wave.

   (2) The basketball continues and leaves the basketball behind.

   (3) When the wind blows, a wave comes from behind the basketball.

A. a—(2)  b—(1)  c—(3)              B. a—(3)  b—(1)  c—(2)

C. a—(1)  b—(3)  c—(2)              D. a—(3)  b—(2)  c—(1)

53. Which of the following is NOT true according to the passage?

  A. Wave energy comes from the water.

  B. Large waves carry plenty of energy.

  C. Wave action makes shorelines change all the time.

  D. The bottom of the wave is easy to slow down.

54. The underlined word “it” ( Paragraph 3) refers to “________”.

A. particles of water      B. the shore      C. the wind    D. the bottom of the wave

55. The main idea of this passage is ______.

  A. what makes particles of water move         B. how a basketball moves on the ocean

C. how wave energy causes wave action        D. why a wave can knock you down

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When the weather is hot, you go to a lake or an ocean. When you are nears lake or an ocean, you feel cool. Why? The sun makes the ear& hot, but it cannot make the water very hot. Although the air over the earth becomes hot, the air over the water keeps cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air. When it moves in, you feel the wind. And the wind makes you cool. Of course, scientists cannot answer all of our questions, ff you ask, "Why is the ocean full of salt?", scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks (裂开). Rain falls into the cracks .The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean?" The ocean does not get more salty every year. Scientists are not sure about the answer to the question. We know a lot about our world. But there are still many answers that we don't have, and we are curious(好奇的).

1. Now scientists know_______

A. what makes people feel cool near a lake or an ocean in summer

B. everything about the ocean

C. why the ocean doesn't get more salty

D. what happens to the salt in the ocean

2. In this passage the word "cracks" means _______in Chinese.

A. 山谷       B.裂缝       C. 地壳     D. 岩浆

3. Which of the following is not true?

  A. The sun makes the earth hot.

  B. The sun cannot make the water very hot.

  C. The wind makes you tout.

  D. The hot air over the water moves in and takes the place of the cold air

4. People are always curious about the world because______

A. they know nothing about it      

B. they know little about it

C. there are many answers they do not have     

D. both. A and B

5. The main idea of this passage is that ______

A. the salt in the ocean comes from rocks

B. scientists can explain (解释) everything we want to know

C. people feel cool when they are near a lake or an ocean

D. scientists can explain many things, but not everything

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When you are ill, you must be unhappy because your body becomes hot, and there are pains all over. You don’t want to work. You stay in bed, feeling terrible.
What makes you ill? They are germs. Germs are everywhere. They are very small and you can’t see them with your eyes, but you can find them with a microscope(显微镜). They are very small and there could be lots of them on or in a very small thing.
Germs are always in the dirty water. When you look at dirty water under a microscope, you will see them in it. So your parents will not let you drink dirty water.
People can also find germs in the air and dust. If you cut your finger, and if some of the dust goes into the finger, it will become big and red, and you will have much pain. Sometimes they will go into your body and you will have pain everywhere.
根据文章的内容选择最佳答案。
【小题1】The write thinks that you’ll __________ when you are ill.
A. not want to work  B. not feel happy  C . A and B
【小题2】You can see germs __________.
A. when you are ill
B. when you use a microscope
C. when you cut your finger
【小题3】 A Microscope is used for __________.
A. making very big things look much smaller
B. making very small things look much bigger
C. examining body
【小题4】Which sentence is not right according to the passage?
A. There may be lots of germs on a small thing.
B. If germs go into your body, you will have pain everywhere.
C. We can see germs with our own eyes.
【小题5】 The writer talks about __________.
A. what makes you ill
B. how to take care of your fingers
C. how to find germs

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Everyone needs friends. Friends bring us happiness and hope in our lives. But the ability to make friends changes from person to person. To some people, making friends is easy, and to others it’s very difficult. 

Making friends is a skill, and the first thing is to know how to get along with others.

If you have trouble in making friends, maybe I can tell you how to do it.

★Realize your own good points. You have skills and talents that others will like.

★Believe that you are a good person and have something nice to share with others.

★Be humorous. Learn to laugh at yourself and your weakness. Remember to smile to others.

★Respect others. Everyone has his own idea. Learn how to listen to others’ ideas without trying to make them accept yours.

★Be kind. If you are kind to others, they will usually be kind to you. There are hundreds of little things you can do to show kindness. Open the door for someone. Wave to a friend and so on.

★Don’t complain. Learn to accept what you can’t change, and work hard to change what you can. No one is willing to hear your complaining all the time.

★Never give up. Even if you are faced with some closed-minded people, never give up. And try to find someone who will understand you.

1.Why do we need friends according to the passage?

A. Friends can do everything for us.                 B. Friends can bring us happiness.

C. Friends accept our ideas all the time.              D. Without friends we could not live.

2.What’s the first thing we should learn in order to make friends?

   A. To help others.                                         B. To smile to others.

   C. To get along with others.                              D. To listen to others’ complaints.

3.Which of the following shows a sense of humour? 

A. Opening the door for someone.                         B. Complaining to others all the time.

   C. Laughing at ourselves and our weakness.      D. Finding someone who will understand us.

4.Which is the best title?

   A. What makes good friends.                     B. How to make friends.        

C. What happiness means.                     D. How to be friendly.

 

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