56.The text is written mainly .
A.to tell people how to raise greyhounds
B.to let people know more about greyhounds
C.to explain why greyhounds are aggressive
D.to describe greyhounds of different colors
57.It can be inferred that greyhounds .
A.love big doghouses
B.like staying in bed all day
C.make the best guard dogs
D.need some exercise outdoors
58.Why does the author say that greyhounds make grest pets?
A.They are big in size.
B.They live a very long life.
C.They can run races for some time.
D.They are quiet and easy to look after.
59.If you keep a pet greyhound,it is important .
A.to keep it stim
B.to keep it warm
C.to take special care of its legs
D.to take it to animal doetors rcgularly
B
Many years ago,when I was fresh out of school and working in Danver,I was driving to my parents’ home in Messouri for Christmas.I atopped at a gas station(加油站) about 50 miles from Okiahoma City,where I was plsning to stop and visit &friend.While I was standing in.line at the cash register（收款台）,I said hello to an older couple who were also paying for gas.
I took off,but had gone anly a few miles when black smoke poured from the back of my car.I stopped and wondered what I should do.A car pulled up behind me. It was the couple I had spoken to at the gas station.They said they would take me to my friend’s.We chatted on the way into the city,and when I get out of the car,the husband gave me his business card.
I wrote him and his wife a thank-you note for helping me.Soon afterward.I received a Christmas present from them.Their note that came with it said that helping me had made their holidays meaningful.
Years later,I drove to a meeting in a nearby town in the morning,In late afternoon I returned to my car and found that I’d left the lights on all day,and the battery(电池) was dead.Then I noticed that the Friendly ford dealership-a shop selling cars-was right next door.I walked over and found two salesmen in the showroom.
“Just how friendly is Friendly Ford?”I asked and explained my trouble.They quickly drove a pickup truck to my car and started it.They would accept no payment;so when I got home;I wrote them a note to say thanks,I received a letter back from one of the salesmen,No one had ever taken the time to write him and say thank you ,and it meant a lot,he said.
“Thank you”- two powerful words.They’re easy to say and mean so much.
60.The author planned to stop at Oklahoma City .
A.to visit a frend
B.to see his parents
C.to pay or the cash register
D.to have more gas for his car