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.

---You’re coughing badly. Have you gone to see a doctor?

---No, but I 　　.

　 A. am going to　 B. will not　 C. am not going to　 D. haven’t

---Look, what have they done?

---Sorry. I think if I __________ another chance, I’ll do it better.

　 A. give　　 B. will be given　　　 C. will give　　　 D. am given

One day an old man is selling (卖) a big elephant. A young man comes to the elephant and begins to look at it slowly. The old man goes up to him and says in his ear, “Don’t say anything about the elephant before I sell it. Then I will give you twenty dollars.”“All right,” says the young man. After the old man sells the elephant, he gives the young man twenty dollars and says, “Now, can you tell me how you found the elephant’s bad ears?”“I didn’t find the bad ears,” says the young man. “Then why are you looking at the elephant slowly?” asked the old man. The young man answers, “Because I have never seen an elephant before, and I want to know what it looks like.”
根据短文选择正确的答案
(　 )11. ________  the elephant.
　　　 A. The young man sells     B. The old man sells
　　　 C. The two men sell        D. The old man buys
(　 )12. The young man is looking at the elephant slowly.
He wants to find out ___________.
　　　 A. which foot of the elephant is bad B. how heavy it is
　　　 C. which ear of the elephant is bad D. what it looks like
(　 )13. The young man   ______________.
　　　 A. knows the elephant has bad ears B. wants to buy the elephant
　　　 C. looks after the elephant D. gets some money from the old man
(　 )14. The young man  ______________.
　　　 A. is not interested in elephants B. knows what an elephant looks like
　　　 C. has seen some elephants before D. has never seen an elephant before
(　 )15. Hearing what the young man said, the old man will probably(很可能)be ____________.
　　　 A. angry （生气）      B. happy     C. dangerous      D. hungry