你知道过去人们怎么利用水制造动力吗？
Do you know how people _____power_____water in the past?

20世纪70年代，美国人发明了照相机和手机。

_______ _____ _____，Americans developed digital cameras and cellphones.

  Is there a chocolatepowered racing car in the world? Hey! You've 1 too many children's books ！But wait Now,there is 2 such a racing car in the world. A team at Warwick University have 3 it. The car,named the " World First Formula 3 racing car".

  The chocolate-powered racing car's engine uses waste from chocolate factories or vegetable oil as fuel(燃料).Well,can this car run very fast? Of course ！ It can go 4 zero to 60 miles per hour in 2. 5 seconds ? and go as 5 as 135 miles per hour. 6 the racing car is running, it cleans itself and lets out oxygen.

  "It 7 us more than nine months to complete the racing car," said a World First team member. "The car is really  8 . You can find many of the car's parts at a farmer's market, or even in a litter bin because most of the materials are waste in most people's 9 It's fun."

  I think people all over the world can drive the car. As a result, the air will have less 10 gas ， and human beings will be healthier.

(   ) 1.A. bought B.seen

      C. read D. watched

(   ) 2. A. hardly B. especially

         C. probably D. nearly

(   ) 3. A. opened B. discovered

          C. trained D. made

(   ) 4. A. in B. of

         C. from D. at

(   ) 5. A. deep B. fast

         C. slow D. high

(   ) 6. A. When B. Until

          C. Although    D. If
(   ) 7. A. paid B. cost

          C.took D. spent

(   ) 8. A. white B. green

         C. blue D. black

(   ) 9. A. mind B. hands

          C. eyes D. mouth

(   ) 10. A. harmful    B. useful
           C. fresh D. clean

A ：Hi, Jane. Would you like to help protect the environment? 

B; 1

A ;Well ，first ，you can start by turning off the lights when you leave the room.

B ：It's easy for me. Sometimes I turn off the lights without thinking. 2

A ：Second, you can ride a bike or walk. 3

B ：That will not only save energy and money but also reduce air pollution. What else? A: Try recycling paper.

B ;Mmm ，newspapers ，magazines ，mails ... 4

A:And last,take a bag when you go shopping. Don't use plastic bags.

 B:OK. 5 Let's do it together.

A.What's next?

B.Everyone should try to protect the environment.

C.I'd like to. But I don't know what I should do.

D.Don't take a bus or a taxi unless you have to.

E.We get a lot of paper at home.

1._____2._____3. _____4._____ 5._____

You need a _____  (向导)to show you the city.

There are plenty of resources in the_____(深的) ocean.

Michael rode into a tree and bent (使弯曲)the front _____(车轮)of his bicycle.

Kris and Karl come from Europe. They're_____(德国人）.

购物时我们应该使用布袋而不使用塑料袋。

We should use cloth bags _______  ______plastic ones when we do the shopping.