As everyone knows, there are many 　16　 of transportation in the world, like bicycles, buses, ships, trains and 　17　 .

If you are in big  18　like Shanghai or Beijing, maybe you get to school   19  a subway or you have to 　20　 to school because you live in a mountain village. Here I am just trying to say something about　21　 .

Ten years　22　, bicycles were very　23　in most villages.  24　 family had one or two of bicycles. Children got to school by bicycle; 　25　 rode bicycles to go shopping. Then motorcycles (摩托车)   26  to become popular. People no longer rode bicycles because motorcycles ran   27  faster.  But now, in some countries，bicycles are highly suggested

  28  the main means of transportation. They think buses, cars and motorcycles pollute(污染) the air but bicycles   29  . So, to live a low-carbon life,   30  a bike is a good way.

阅读理解

阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项．

　　Dear Earthmen,

　　I have enjoyed my stay on your interesting planet. I think I understand the life on earth now and I would like to give my impressions(印象).

　　First of all you live in boxes. Every morning you leave your big boxes and get into smaller boxes on wheels(轮子). All these small boxes run around and around, and finally stop to rest. You leave these boxes on wheels and go to very large tall boxes.

　　After resting all day you get back in your little boxes and return to your big boxes. There you sit and look at very small glowing boxes with moving pictures on the front.

　　There is only one thing I don't understand. I went to a football game one day. A group of angry boys fought a little round ball. Everyone shouted but they kept fighting. They were angry, because they had been kept in boxes all day. I think.

　　Thanks you earthmen for this chance to get to know you.

Yours

The man from Mars

1．“Your interesting planet” means ________.

[　　]

2．“Big boxes” means ________.

[　　]

A．large wooden boxes for goods

B．streets

C．houses for people to live in

D．factories

3．“small boxes on wheels” means ________.

[　　]

4．“very small glowing boxes with moving pictures on the front” means ________.

[　　]

5．The man from the Mars ________.

[　　]

A．was afraid of fighting

B．enjoyed playing football

C．didn't understand football at all

These days，cars arc designed using computers．Let’s look at how a new car is created．

    First，several   1   talk about the new car and any good ideas that they have．Then they sit down at their computers and   2   many sketches．The best two or three drawings are chosen and then more detailed drawings of   3   are developed on the computer．You can change the size，shape or colour of any part on the computer to see   4   the car would look and then you can choose the best design．

    Both the inside and the outside of the car have to be designed．Part of the inside of the car is 5  so that the designers can sit in it．They can feel if there is enough  6  inside and if they can reach  7  ．Then some cars are built-there are more than 15，000 parts of a car to8  ．

    When everything is known to be  9   ，the cars are made in the factory．Again，computers are used to make sure that all the parts are   10  as they are needed．The factory

usually stays open all through the night so that the car production never stops．

1．A．drivers                B．designers           C．workers            D．salesmen

2．A．draw                 B．order                 C．type               D．enjoy

3．A．bicycles              B．trains               C．cars                 D．buses

4．A．how                 B．if                 C．what              D．that

5．A．covered              B．painted              C．locked             D．built

6．A．metal                   B．glass                 C．leather             D．room

7．A．nothing               B．somebody          C．everything            D．nobody

8．A．choose                      B．test                C．show             D．repair

9．A．safe                  B．easy               C．cheap              D．fast

10．A．rare                  B．electronic           C．comfortable         D．ready

    These days，cars are designed using computers．Let’s look at how a new car is created．

    First，several   16   talk about the new car and any good ideas that they have．Then they sit down at their computers and   17   many sketches．The best two or three drawings are chosen and then more detailed drawings of   18   are developed on the computer．You can change the size，shape or colour of any part on the computer to see   19   the car would look and then you can choose the best design．

    Both the inside and the outside of the car have to be designed．Part of the inside of the car is     20  so that the designers can sit in it．They can feel if there is enough  21  inside and if they can reach  22  ．Then some cars are built-there are more than 15，000 parts of a car to 23  ．

    When everything is known to be   24   ，the cars are made in the factory．Again，computers are used to make sure that all the parts are   25   as they are needed．The factory

usually stays open all through the night so that the car production never stops．

16．A．drivers           B．designers           C．workers        D．salesmen

17．A．draw             B．order              C．type           D．enjoy

18．A．bicycles          B．trains              C．cars            D．buses

19．A．how             B．if                 C．what           D．that

20．A．covered          B．painted             C．locked         D．built

21．A．metal            B．glass               C．leather         D．room

22．A．nothing          B．somebody           C．everything       D．nobody

23．A．choose           B．test                C．show           D．repair

24．A．safe             B．easy               C．cheap           D．fast

25．A．rare             B．electronic           C．comfortable      D．ready