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

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

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.

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)

3.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.

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

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

5.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

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.
【小题1】______ is really moving forward when you look at the wave.

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

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

There is not enough oil in the world now. As time goes by ,it becomes less and less ,so what are we going to do when it runs out? Perhaps we will go back to use horses ,carriages and bicycles .

 In the Second World War ,some people didn＇t use gas made from petroleum （石油）in their cars .They made gas from wood and plants instead . The cars didn＇t go fast ,but they ran ,so this was better than nothing. However, in the future, we can＇t cut down all our trees to make gas; we need our trees for other things, too.

Besides different types of gas, we can also use electricity(电)to run our cars but first we must make the electricity ！Some countries have coal and they make electricity with that, but we might not always have coal, either. Other countries have big ,strong rivers and they can use the power of water to turn turbines(涡轮机) and make electricity more easily and cheaply.

We are also able to get power from the ocean tides. We put turbines into the mouth of the river .Then the tide comes in ,the water turns the turbines and then it goes out ,it turns them again.

Which of these ways will be used to run our cars in the future?

1.When might people have to go back to using horses and carriages?

A. When they are poor    

B. When they run out of oil

C. When they need more exercise

D. When there aren＇t any big trees in the world

2.How many ways are suggested to make electricity in the passage?

A.2           B.5          C.4                 D.3

3.The passage is mainly about             .

A. how to run our cars

B. what to do when oil runs out

C. different types of gas

D. the way to make electricity