题目内容
Columbus _________ the New World in 1492.
A．discovered B．found C．found out D．looked for
A
【解析】
试题分析：考查动词及短语用法辨析。A发现（指发现原来就存在的东西）；B找到（表示寻找的结果）；C查明；D寻找（表示寻找的动作）；句意：哥伦布在1492年发现了新大陆。故A正确。
考点：考查动词及短语用法辨析
点评：动词的词义辨析要放在上下文的语境中进行，要注意上下文的语义的串联以及逻辑关系的推理，特别要注意一些动词的固定搭配以及动词的深层次的含义的区别。
Columbus returned home with the news of his discovery of “Indian” 36 Columbus called it. Then he was considered as the hero who had given a new world to Spain. Never had so great __37__ been shown to any __38__man.But there were some who were jealous of the __39__.”Who is this Columbus?” they asked, “and what has he done? Isn’t he a poor sailor from Italy？And could __40__ other seamen sail across the ocean just as he has done?”
One day Columbus was at 41 and several of these fellows were __42__ too. They tried to make Columbus __43__.”You have discovered strange lands __44__ the sea,”they said.“But we don’t see why there __45__ be so much said about it. Anybody can sail across the ocean and anybody can coast along the islands __46__ ,just as you have done. It is the __47__ thing in the world.”
Columbus made no answer, but after a while he took an egg from a dish and said to the people at the table, “Who __48__ you, gentlemen, can make the egg stand __49__ ?” One by one they tried the __50__．When the egg had gone __51__ around and everyone had failed, all said that it could not be done, Then Columbus took the egg and __52__the shell of the egg’s small end a little upon the table. After that there was no trouble in making it stand __53__.“Gentlemen,”said he, “what is easy than to do this __54__ you said was impossible ? It is simplest thing in the world. Anybody can do it-----AFTER HE HAD BEEN SHOWN __55__.”
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When people first walked across the Bering Land Bridge thousands of years ago, dogs were by their sides, according to a study published in the journal Science.
Robert Wayne of the University of California, Los Angeles, and Jennifer Leonard of the Smithsonian Institute, used DNA material—some of it unearthed by miners in Alaska—to conclude that today’s domestic dog originated in Asia and accompanied the first humans to the New World about 10,000 to 15,000 years ago. Wayne suggests that man’s best friend may have enabled the tough journey from Asia into North America. “Dogs may have been the reason people made it across the land bridge,” said Wayne. “They can pull things, carry things, defend you from fierce animals, and they’re useful to eat.”
Researchers have agreed that today’s dog is the result of the domestication(驯化) of wolves thousands of years ago. Before this recent study, a common thought about the precise origin of North America’s domestic dog was that Natives domesticated local wolves, the descendents(后代) of which now live with people in Alaska, Canada, and the Lower 48.
Dog remains from a Fairbanks-area gold mine helped the scientists reach their conclusion. Leonard, an evolutionary biologist, collected DNA from 11 bones of ancient dogs that were locked in permafrost(永冻层) until Fairbanks miners uncovered them in the 1920s. The miners donated the preserved bones to the American Museum of Natural History in New York City, where they remained untouched for more than 70 years. After borrowing the bones from the museum, Leonard and her colleagues used radiocarbon techniques to find the age of the Alaska dogs. They found the dogs all lived between the years of 1450 and 1675 A.D., before Vitus Bering and Aleksey Chirikov who were the first known Europeans to view Alaska in 1741. The bones of dogs that wandered the Fairbanks area centuries ago should therefore be the remains of “pure native American dogs,” Leonard said. The DNA of the Fairbanks dogs would also expose whether they were the descendents of wolves from North America.
Along with the Fairbanks samples, the researchers collected DNA from bones of 37 dog specimens(标本) from Mexico, Peru, and Bolivia that existed before the arrival of Columbus. In the case of both the Alaska dogs and the dogs from Latin America, the researchers found that they shared the most genetic material with gray wolves of Europe and Asia. This supports the idea of domestic dogs entering the New World with the first human explorers who wandered east over the land bridge.
Leonard and Wayne’s study suggests that dogs joined the first humans that made the adventure across the Bering Land Bridge to slowly populate the Americas. Wayne thinks the dogs that made the trip must have provided some excellent service to their human companions or they would not have been brought along. “Dogs must have been useful because they were expensive to keep,” Wayne said. “They didn’t feed on mice; they fed on meat, which was a very guarded resource.”
1. The underlined word “remains” is closed in meaning to ______.
A. leftover food B. animal waste
C. dead bodies D. living environment
2. According to the study described in Paragraph 4, we can learn that ______.
A. ancient dogs entered North America between 1450 and 1675 AD
B. the 11 bones of ancient dogs are not from native American dogs
C. the bones discovered by the gold miners were from North American wolves
D. the bones studied were not from dogs brought into North America by Europeans
3. What can we know from the passage?
A. Native Americans domesticated local wolves into dogs.
B. Scientists discovered some ancient dog remains in 1920s.
C. Latin America’s dogs are different from North America’s in genes.
D. Ancient dogs entered North America across the Bering Land Bridge.
4. The first humans into the New World brought dogs along with them because ______.
A. dogs fed on mice B. dogs were easy to keep
C. dogs helped protect their resources D. dogs could provide excellent service
5.What does the passage mainly talk about ______.
A. the origin of the North American dogs
B. the DNA study of ancient dogs in America
C. the reasons why early people entered America
D. the difference between Asian and American dogs
The
new book, 1491, completely changes our understanding of the Americas before the arrival of Columbus in 1492.