In summer, millions of people will head for the beach．And while the ocean can be a great place to swim and play, it may also be useful in another way．Some scientists think that waves could help make electricity．

       “Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”

       Scientists are working on using that energy to make electricity．

       Most waves are created when winds blow across the ocean．“The winds start out by making little ripples （波纹） in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”

       When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine （涡轮） ．The turbine can then power an electrical generator （发电机） ．

       The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．

       The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．

       Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．

       Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．

       With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”

       In the future, when you turn on a light switch, an ocean wave could be providing the electricity!

Which of the following is NOT true?

       A．Wave power doesn’t cost too much money．

       B．Wave energy is so clean that it doesn’t create the same amount of pollution as other energy sources．

       C．Wave power affects fishing and boat traffic．

       D．Wave power may affect marine animals．

We can infer from the passage that ______．

       A．finding more new energy sources is not necessary because of wave energy

       B．wave energy is a resource that will never run out and is used all over the world

       C．wave power is not quite perfect for creating energy around the world

       D．wave power doesn’t create any pollution

The underlined word “drawbacks” probably means ______．

       A．regrets     B．adventures       C．disadvantages   D．difficulties

What can be the best title for the passage? 

       A．How to Get Electricity by Waves     

       B．The advantages of Wave Energy

       C．Can Waves Make Electricity?        

       D．The Disadvantages of Wave Energy

In summer, millions of people will head for the beach．And while the ocean can be a great place to swim and play, it may also be useful in another way．Some scientists think that waves could help make electricity．
“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”
Scientists are working on using that energy to make electricity．
Most waves are created when winds blow across the ocean．“The winds start out by making little ripples （波纹） in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”
When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine （涡轮） ．The turbine can then power an electrical generator （发电机） ．
The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．
The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．
Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．
Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．
With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”
In the future, when you turn on a light switch, an ocean wave could be providing the electricity!
【小题1】Which of the following is NOT true?

A．Wave power doesn’t cost too much money．

B．Wave energy is so clean that it doesn’t create the same amount of pollution as other energy sources．

C．Wave power affects fishing and boat traffic．

D．Wave power may affect marine animals．

【小题2】We can infer from the passage that ______．

A．finding more new energy sources is not necessary because of wave energy

B．wave energy is a resource that will never run out and is used all over the world

C．wave power is not quite perfect for creating energy around the world

D．wave power doesn’t create any pollution

【小题3】The underlined word “drawbacks” probably means ______．

A．regrets

B．adventures

C．disadvantages

D．difficulties

【小题4】What can be the best title for the passage? 

A．How to Get Electricity by Waves	B．The advantages of Wave Energy
C．Can Waves Make Electricity?	D．The Disadvantages of Wave Energy

 

In summer, millions of people will head for the beach. And while the ocean can be a great place to swim and play, it may also be useful in another way. Some scientists think that waves could help make electricity.

“Have you ever been on a surfboard or boat and felt yourself being lifted up by a wave? Or have you jumped in the water and felt the energy as waves crashed over you?” asked Jamie Taylor of the Wave Energy Group at the University of Edinburgh in Scotland．“There is certainly a lot of energy in waves．”

Scientists are working on using that energy to make electricity．

Most waves are created when winds blow across the ocean．“The winds start out by making little ripples (波纹) in the water, but if they keep on blowing , those ripples get bigger and bigger and turn into waves, ”Taylor said．“Waves are one of nature’s ways of picking up energy and then sending it off on a journey．”

When waves come towards the shore, people can set up dams or other barricades to block the water and send it through a large wheel called a turbine (涡轮) ．The turbine can then power an electrical generator (发电机) ．

The United States and a few other countries have started doing research on wave energy , and it is already being used in Scotland．

The resource is huge．We will never run out of wave power, besides, wave energy does not create the same pollution as other energy sources, such as oil and coal．

Oceans cover three quarters of the earth’s surface．That would make wave power seem perfect for creating energy around the world．There are some drawbacks, however．

Jamie Taylor said that wave power still cost too much money．He said that its effects on animals in the sea were still unknown．Plus, wave power would get in the way of fishing and boat traffic．

With more research, however, “many of these problems might be overcome,” Taylor said．“Demand for energy to power our TVs and computers, drive our cars, and heat and cool our homes is growing quickly throughout the world．Finding more energy sources is very important, for traditional sources of energy like oil and gas may run out some day．”

In the future, when you turn on a light switch, an ocean wave could be providing the electricity!

1.Which of the following is NOT true?

A．Wave power costs too much money．

B．Wave energy creates the same amount of pollution as other energy sources．

C．Wave power affects fishing and boat traffic．

D．Wave power may affect marine animals．

2.We can infer from the passage that ______．

A．finding more new energy sources is not necessary because of wave energy

B．wave energy is a resource that will never run out and is used all over the world

C．wave power is perfect for creating energy around the world

D．wave power doesn’t create any pollution

3.The underlined word “drawbacks” probably means ______．

A．regrets        B．adventures     C．disadvantages    D．difficulties

4.What can be the best title for the passage? 

A．How to Get Electricity by Waves．                  B．The Advantages of Wave Energy.

C．Can Waves Make Electricity?      D．The Disadvantages of Wave Energy．

 

We all know the dangers of fires. It’s good and necessary for a family to learn how to prepare for a fire. Here are some suggestions.
Put a smoke alarm(火警) in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.
Make escape plans. We should know all the ways out of the house. If there is a fire, everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily.
Buy fire extinguishers(灭火器) in the house. Everyone in the family should know how to use them.
Practise for a fire. We do fire practice because we teach children about fire safety. Everyone in the family should know the following fire rules:
★Don’t open a hot door! The fire can grow more quickly if you open the door.
★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises.
★What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll! Turning over and over will make the fire go out. Put a blanket(毯子) around you to keep air away from the fire that may still be on you.
There are many possible causes for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help.
【小题1】When a smoke alarm rings at home, it means _________.

A．you have to get up	B．water is running to the floor
C．something is burning	D．someone breaks your window

【小题2】The writer advises us to do the following to prepare for a fire except that _____.

A．we practise for a fire	B．we make escape plans
C．we buy fire extinguishers	D．we use electrical cookers

【小题3】When a fire happens,____ if you open the hot door.

A．the door will soon be on fire	B．the electricity will be cut off
C．the fire will grow more quickly	D．the house will fall down

【小题4】What are the right steps you should take when your hair or clothes catch fire?

A．Stop, run, roll.	B．Stop, drop, roll.
C．Run, drop, roll.	D．Roll, drop, stop.

【小题5】What is the best title for this passage?

A．Be Ready for a Fire.	B．The Causes of a Fire.
C．Learn to Use a Fire Extinguisher.	D．The Dangers of a Fire.

We all know the dangers of fires. It’s good and necessary for a family to learn how to prepare for a fire. Here are some suggestions.

Put a smoke alarm(火警) in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.

Make escape plans. We should know all the ways out of the house. If there is a fire, everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily.

Buy fire extinguishers(灭火器) in the house. Everyone in the family should know how to use them.

Practise for a fire. We do fire practice because we teach children about fire safety. Everyone in the family should know the following fire rules:

★Don’t open a hot door! The fire can grow more quickly if you open the door.

★Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises.

★What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll! Turning over and over will make the fire go out. Put a blanket(毯子) around you to keep air away from the fire that may still be on you.

There are many possible causes for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help.

1.When a smoke alarm rings at home, it means _________.

A．you have to get up                      B．water is running to the floor

C．something is burning                     D．someone breaks your window

2.The writer advises us to do the following to prepare for a fire except that _____.

A．we practise for a fire                     B．we make escape plans

C．we buy fire extinguishers                 D．we use electrical cookers

3.When a fire happens,____ if you open the hot door.

A．the door will soon be on fire               B．the electricity will be cut off

C．the fire will grow more quickly             D．the house will fall down

4.What are the right steps you should take when your hair or clothes catch fire?

A．Stop, run, roll.                          B．Stop, drop, roll.

C．Run, drop, roll.                         D．Roll, drop, stop.

5.What is the best title for this passage?

A．Be Ready for a Fire.                      B．The Causes of a Fire.

C．Learn to Use a Fire Extinguisher.            D．The Dangers of a Fire.