Americans love dogs, all types of dogs: small dogs, big dogs, lapdogs (供玩赏的小狗). Each year, people spend billions of dollars on their four-legged pals, making sure the lovable dogs have enough food to eat and lots of toys to play with.
Dogs love people, too. They lick their faces, protect their homes. Where did these four-legged companions come from? Some scientists believe that they have found the answer.
Scientists have long known that dogs evolved from（演化） wolves. Exactly when the transformation from wolf to dog actually took place, however, remains a mystery.
Some said dogs evolved as a separate species 135,000 years ago in two parts of the world. One group of dogs developed in Europe and Asia from Asian wolves. The other group evolved in North, Central, and South America from American wolves.
Now researchers say those theories are wrong. New studies suggest that domesticated dogs first appeared 15,000 years ago in eastern Asia. Scientists also say that every modern dog descended from approximately five female Asian wolves, the mother of all modern dogs.
Scientists suspect dogs first set paws in North America by following settlers across a land bridge that once linked northern Asia and North America.
1.According to recent studies, all modern dogs came from female wolves in ______.
|
A．Asia |
B．Africa |
|
C．Europe |
D．South America |
2.From this story, we can conclude that _______.
|
A．dogs are scientists’ best friends |
|
B．dogs are more like wolves than they are like any other animal |
|
C．most dogs are from Africa |
|
D．scientists have no idea how dogs evolved |
3.The underlined word “domesticated” means “_______”.
|
A．tamed |
B．indoor |
C．intelligent |
D．friendly |
4.The best title for this story might be ______.
|
A．Why Cats Don’t Like Dogs |
|
B．Barking up the Wrong Tree |
|
C．Love Me, Love My Dog |
|
D．Going from Wolf to Dog |
The sun was shining when I got on No. 151 bus. We passengers sat jammed in heavy clothes. No one spoke. That’s one of the 36 rules. Although we see the same faces every day, we prefer to 37 behind our newspapers. People who sit so close together are using those thin sheets of newsprint to keep their 38.
As the bus came near the Mile, a 39 suddenly rang out, “40! This is your driver speaking.” We 41 the back of the driver’s head. “Put your papers down. All of you.” The 42 came down. “Now, turn and face the person next to you. Go 43.”
Surprisingly we all did it. Still no one smiled. I faced an older woman, her head wrapped in a red scarf. I saw her 44 every day. Our eyes met. We waited for the next 45 from the driver. “Now repeat after me. Good morning, neighbor!”
Our voices were 46. For many of us, these were the 47 words we had spoken that day. But we said them together, like 48, to the strangers beside us. We couldn’t help 49. There was the feeling of relief(解脱) that we were not being robbed. Moreover, there was the sense of ice being 50. “Good morning, neighbor.” It was not so 51 after all. Some of us repeated it, others shook hands, and many laughed.
The bus driver said nothing more. He didn’t 52 to. Not a single newspaper went back up. I heard laughter, a warm sound I had 53 heard before in bus No. 151.
When I 54 my stop, I said goodbye to my seatmate, and then jumped off the bus. That day I was 55 off happily.
|
1. |
|
|
2. |
|
|
3. |
|
|
4. |
|
|
5. |
|
|
6. |
|
|
7. |
|
|
8. |
|
|
9. |
|
|
10. |
|
|
11. |
|
|
12. |
|
|
13. |
|
|
14. |
|
|
15. |
|
|
16. |
|
|
17. |
|
|
18. |
|
|
19. |
|
|
20. |
|
The book has been well received, but _________ actual sales, it hasn’t been very successful.
|
A．in terms of |
B．in need of |
C．in favour of |
D．in honor of |
Though they are very busy every day, they manage to get tighter_______.
|
A．by and by |
B．now and then |
C． all the time |
D．more or less |
She _______herself ______as an American.
|
A．passed ;off |
B． passed; through |
C．passed; on |
D． passed; by |
She is only a (n) _________, not a friend of mine.
A. acquaintance B . familiarity C. announcement D, family
