Bolivia (玻利维亚) has a population of three and a half million. About one-tenth of the total population are white; one fourth are mixed Indians and white; and more than half are full blooded Indians. T 题目和参考答案——青夏教育精英家教网—

题目内容

Bolivia (玻利维亚) has a population of three and a half million. About one-tenth of the total population are white; one fourth are mixed Indians and white; and more than half are full blooded Indians. The government and the industries are under the control of the white people.

The Indians today live in much the same way as their ancestors (祖先). Most of them are farmers. Many work in the mines, for mining is the most important industry in Bolivia．Of all the mining products, tin is the most important, which makes up three fourths of all Bolivia’s exports(出口). The eastern slopes (坡) of the Andes, since there are very few roads there, are fertile(富饶的) but not highly developed．The two primary means of transportation are river boats and porters. East of the hill regions are the great plains where tropical (热带的) plants are grown. A serious problem for Bolivia is the transport of food from the warm regions, where it is grown, to the mountainous regions, where most of the people live.

Bolivia gained its independence from Spain about a hundred years ago. It has been slow in developing, but its rich resources promise a better future in it.

1．The majority of the Bolivian population are ________ .

A．full—blooded Indians

B．mixed Indian and white

C．white citizens

D．all whites and mixed—blooded people

2. Compared with their ancestors, the Indians’ way of life today is________

A．totally

B．much harder

C．almost the same

D．greatly improving

3. The main product Bolivia exports is________

A．tropical plants

B．gold and silver

C．tin

D．food

4. The eastern slopes of the Andes is not highly developed because________

A．there are thick forests there

B．there are very few roads there

C．there are many fine mines there

D．they are not fertile enough

5. Bolivia has been slow in developing, but it has hope for a better future because of its________

A．mining products

B．rich resources

C．independence from Spain

D．two primary means of transportation

答案：ACCBB
提示：

1. more than half are full blooded Indians.

2. The Indians today live in much the same way as their ancestors.

3. Of all the mining products, tin is the most important, which makes up three fourths of all Bolivia’s exports.

4. The eastern slopes (坡) of the Andes, since there are very few roads there, are fertile(富饶的) but not highly developed.

5. It has been slow in developing, but its rich resources promise a better future in it.

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　　These days, it's easy to fly across oceans for vacation．Centuries ago, however, crossing the open seas required thorough and accurate planning, handmade boats, and courage．Scientists and historians have long been looking for clues to explain who crossed which oceans first．When it comes to the trip between Polynesia(玻利尼西亚中太平洋群岛)and South America, chickens may have been among the first ocean voyagers, according to new evidence．

　　After studying an ancient chicken bone, anthropologists(人类学家)from the University of Auckland in New Zealand now say that people and chickens traveled from Polynesia to what is now Chile(智利)by about 620 years ago．By then, the Inca people were already living in South America, but the Polynesians would have been the first to get there by sea．Previous theories claimed that European explorers and their chickens sailed to South America first -- but those voyagers didn't arrive until about a century later．

　　In 2002, archaeologists dug up 50 chicken bones from a site in Chile called El Arenal．The team from New Zealand analyzed one to these bones．According to their calculations, the bone is about 650 years old．

　　The researchers also compared the genetic material, or DNA, from the South American chicken bone with DNA from 11 chicken bones that had been found on the Polynesian islands of Tonga and American Samoa．These islands are 6,000 miles west of Chile．The bones found on the Polynesian islands are been 600 and 2,000 years old．

　　Results of the comparisons showed that the chicken bones from both the Polynesian and South American sites had part of DNA in common．The researchers found the same part of DNA in feathers of two living chickens in Chile that belong to a modem breed that lays blue eggs．That DNA evidence suggests a close relationship among the chickens．

　　"However, the weight of scientific evidence is now behind the hypothesis(假设)that it was seafaring(航海)Polynesians who sailed from the islands to South America and returned," says archaeologist Patrick V．Kirch of the University of California, Berkeley．

(1)

What is the passage mainly about?
[　　]
A．	It was difficult for ancient people to travel between Polynesia and South America．
B．	The first people who lived in Chile and Polynesia．
C．	Valuable chicken bones have been found in Chile．
D．	Chickens－the first to travel between Polynesia and South America．

(2)

When did the first European explorers reach South America?
[　　]
A．	About 520 years ago．
B．	About 2.000 years ago．
C．	About 600 years ago．
D．	About 620 years ago．

(3)

People found that chickens were among the first to travel from Polynesia to South America by _________．
[　　]
A．	comparing the colors of eggs laid by chickens from the two places
B．	comparing the DNA of chicken bones dug up on the Polynesian islands and that of the chicken bones from South America
C．	studying some previous theories
D．	asking the natives of South America

(4)

What do we learn from the passage?
[　　]
A．	European explorers and their chickens were the first to sail to South America．
B．	Chickens in South America have the same ancestors as those in Polynesia．
C．	In ancient times, a 6,000-mile channel separated Polynesia from South America．
D．	Before the Polynesians arrived in South America, the Inca people had lived there．'

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伦敦奥组委以海报形式面向世界招募2012年伦敦奥运会志愿者。请你根据下表信息，以李华的身份向伦敦奥组委写一封自荐信，要求为奥运会服务。

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年龄

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有

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