5.   be in great danger   __________________

6.   play a part   __________________

7.   plant more trees  __________________

8.   move to other planets   __________________

1.   100年之后  _______________

2.   活到……  _______________

3.   在纸上   _______________

4.   拯救地球   _______________

A kind of little cars may some day take the place of today's cars. If everyone drives such cars in the future, there will be less pollution from the cars. There will also be more space for parking cars in cities,and the streets will be less crowded. Three such cars can park in the space now needed for one car of the usual size.

The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 65 kilometers an hour. The cars of the future will be fine for getting around a city, but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gas (汽油）.

If big cars are still used along with the small ones,two sets of roads will be needed in the future. Some roads will be used for the big, quick cars and other roads will be needed for the slower, smaller ones.

(       )1.  There is much pollution from the cars today because________ .

A.   people drive big cars

B.    the cars go 65 kilometers an hour

C.    people drive small cars

      D.   the cars can go 450 kilometers an hour

  (       )2.  The usual sizes of cars today are________  that of future cars.

A.   smaller than

B.    the same as

C.    three times as large as

D.   a little larger than

(       )3.  We can learn from the passage that ________ .

A.   big cars cost less to own and to drive

B.    the cars of the future will be much smaller than today's cars

C.    big cars are not useful for long trips

D.   small cars are faster than big ones

(       )4.  The street will be less crowded in the fu?ture because________  .

A.   there will be fewer cars

B.    there will be fewer people in the street

C.    driving future cars will be safe

D.   future cars will be much smaller

(       )5. Two sets of roads may be needed in the future because________ .

A.   there will be too many cars in the fu?ture

B.   more and more people will get around a city

C.   big cars will be used along with the small ones

D.   it looks more beautiful to have two sets of roads

5.   ―Will there be more pollution in the future?(作肯定回答）

---________ ，________ ________ 。

4.   I'll live in an apartment,(对画线部分提问)

________ ________ you________ ？

3.   Bob will play soccer with his friends this after?noon. (改为同义句）

Bob _______ ________ ________   play soccer with his friends this afternoon.

2.   ―Will kids study at home on computers in the future?(作否定回答）

---________ ，________ ________ 。

1.   I think New York City will be a clean city.(改为否定句）

I_________________ New York City _________ a clean city.

6.    There will be ________   free time when people retire.

5.    There will be ________  robots in the future, and humans will have________  work to do.