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单选题
How many African nations have direct air links to America?
A
Two
B
Four
C
Six
参考答案
参考解析
解析：
新闻第一句中提到the six African nations with direct air links to the United States，故可知答案为C选项。
【录音原文】
Reaction to the attempted bombing of a U.S. airliner on Christmas Day has been mixed among the six African nations with direct air links to the United States. Ghana has announced it will install full-body scanners at Accra's international airport by next month. Nigeria has also announced it will install the scanners at Lagos international airport. They can detect non-metallic materials hidden on the human body. But some rights groups consider the scanners an invasion of privacy, because they show private physical characteristics in detail.
【录音原文】
Reaction to the attempted bombing of a U.S. airliner on Christmas Day has been mixed among the six African nations with direct air links to the United States. Ghana has announced it will install full-body scanners at Accra's international airport by next month. Nigeria has also announced it will install the scanners at Lagos international airport. They can detect non-metallic materials hidden on the human body. But some rights groups consider the scanners an invasion of privacy, because they show private physical characteristics in detail.
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African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory. Their population has been dwindled from 1.3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed. "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen,Senior vice president of the World Wildlife Fund.
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查看材料
A．The rate of killing has been accelerating.
B．The US government forbids imports of both raw and finished ivory.
C．They realized that the killing of elephants is a serious threat to their tourist business.
D．African people advocated an ivory ban.
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African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory． Their population has been dwindled from 1．3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed． "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen, Senior vice president of the World Wildlife Fund．
Though its record on the environment has been spotty so far, the government last week took the lead in a major conservation issue by imposing a ban on ivory imports into the US． The move came just four days after a consortium of conservation groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of action, and it made the US the first nation to forbid imports of both raw and finished ivory． The ban, says Bohlen, sends a very clear message to the ivory poachers that the game is over．
In the past African nations have resisted an ivory ban, but increasingly they realized that the decimation of the elephant herds poses a serious threat to their tourist business． Last month Tanzania and several other African countries called for an amendment to the 102 nation Convention on International Trade in Endangered Species that would make the ivory trade illegal worldwide． The amendment is expected to be approved at an October meeting in Geneva and to go into effect next January． But between now and then, conservationists contend, poachers may go on a rampage, killing elephants wholesale, so nations should unilaterally forbid imports right away． The US government brought that argument, and by week's end the twelve nation European Community had followed with its own ban．
Why did the African nations welcome an ivory ban?A. The rate of killing has been accelerating．
B. The US government forbids imports of both raw and finished ivory．
C. They realized that the killing of elephants is a serious threat to their tourist business．
D. African people advocated an ivory ban．
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