题目内容
Cats are the most popular pets among Americans. So it is not surprising that there are many expressions about cats. Some cats like to catch small birds, like canaries (金丝雀). If someone looks very proud or satisfied with himself, we say he looks like the cat that ate the canary.
Sometimes, a cat likes to play with a small animal it catches.
So if you play cat and mouse with someone, you change between different kinds of behavior when dealing with another person. For example, a child might offer something sweet to his little brother and then take it away when he reaches for it.
You may have known that cats spend most of their time sleeping. Sometimes people sleep for a short time during the day. This is called a cat nap.
If you tell about something that was supposed to be a secret, we say you let the cat out of the bag. If you are not able to speak or answer a question, someone might ask if the cat has got your tongue.
Have you ever watched children in the classroom when their teacher leaves for a few minutes? “When the cat’s away, the mice will play.” will best describe that situation.
You may have heard this expression: curiosity (好奇心) killed the cat. This means being too concerned about things that are not your business might cause problems.
If your home is very small, you might say there is not enough room to swing a cat. But you probably should not try this at home!
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Is it true that cats have nine lives? One 4-year-old American cat named Sugar definitely seems to have more than one. Sugar fell from the 19th floor of her owner’s home in Boston last month and was only hurt a little on her chest.
“This story isn’t much of a surprise,” said Jake Socha, a scientist at Virginia Tech University, US, in an interview with the BBC. “There have been lots of records of these cats surviving.”
Back in 1987, scientists studied 132 cats. All of them had been brought to a vet’s clinic in New York after falling from tall buildings. Around 90 percent of these cats were alive after their fall and only 37 percent had been seriously injured.
“Being able to survive falls is a critical thing for animals that live in trees, and cats are one of them,” said Socha.
Cats have developed special body structures to survive accidental falls. Their legs are muscular. This can protect their bones from breaking, Professor Andrew Biewener from Harvard University told the BBC. Cats can also spread out their legs like a parachute to reduce their falling speed, he said.
The strange part, according to scientists, is that cats have a better chance of survival if they fall from higher than seven stories. This is because cats have a good sense of which way is down. They can twist their bodies as they fall to make sure they land on their feet. A higher fall means more time for the cat to change its body position.
However, you should not throw your cat out of the window to see how this works. Most pet cats are overweight nowadays. They are not fit enough to change their position in midair, warned Steve Dale, an American cat behavior scientist.
“This cat (Sugar) was lucky,” Dale said. In fact, most cats would suffer serious lung damage, a broken leg or a broken jaw or teeth damage, he said.
【小题1】What can we learn from Paragraph 3?
| A．Cats really do have nine lives. |
| B．Many cats can survive falls. |
| C．Cats are the softest animals in the world. |
| D．More than half of the cats that fall from high places end up badly injured. |
| A．Important. | B．Easy. | C．Challenging. | D．Serious. |
a. They have a hidden parachute in their bodies.
b. Their legs have developed in a way that protects their bones from breaking.
c. They can land on their feet.
d. They can twist their bodies to reduce the speed at which they are falling.
| A．a, b | B．b, c | C．c, d | D．b, d |
| A．A pet cat that falls out of a tall building is not really at risk. |
| B．Sugar was lucky that she was only injured in the leg. |
| C．Cats are confused as to which way is down when they are in midair. |
| D．A cat that falls from the fourth story of a building is more likely to die than one that falls from the 10th story. |
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.
【小题1】According to recent studies, all modern dogs came from female wolves in ______.
| A．Asia | B．Africa |
| C．Europe | D．South America |
| 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 |
| A．tamed | B．indoor | C．intelligent | D．friendly |
| 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 |