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【单选题】

Half of world’s primates face extinction
Almost 50% of the world’s 634 primate (灵长类动物) species face extinction, according to a report from the International Union for the Conservation of Nature.
Habitat loss is a major cause, but many monkeys and apes are being hunted to extinction for food, especially in forests of south-east Asia. "It’s cheaper to go into the forest and kill a monkey than to raise a chicken," says Jean-Christophe rie, deputy head of the IUCN’s species programmeand a co—author of the report. "We’ve raised concerns for years about primates being in er, but now we have solid data to show the situation is far more severe than we imagined," says Russell Mittermeier, president of Conservation International, which co-funded the study.
The areas most at risk are in Vietnam and Cambodia, where 90% of species are being driven to extinction by demand for monkey meat and baby monkeys as pets. Most acutely affected are medium-sized monkeys such as gibbons(长臂猿), leaf monkeys and langurs, which are easy for hunters to track down and kill because of their size and the noise they make.
In South America. spider monkeys and capuchin monkeys(卷尾猴)have been hit hardest. In Africa, red colobus monkeys are now critically enered. Eleven of the 13 species assessed were listed as critically enered or enered. Two may already be extinct. " Among the African species, the great apes such as gorillas (大猩猩) and bonobos have always tended to grab the limelight, and even thought they’re deeply threatened, it is smaller primates such as the red colobus that could die out first," says Richard Wrangham, president of the International Primatological Society.
Huge political efforts are needed now to reverse the impending losses of threatened species, says Vid. "What’s needed is national legislation to protect biodiversity, creation of protected areas with dedicated staff, crackdowns on corruption, and captive breeding programmes," he says.
But it will be difficult to halt and reverse the damage done by habitat destruction and the hunters. Once habitat is gone, animals have nowhere to go. Also, killing primates rapidly depletes populations, because they have fewer young than many other mammals and take much longer to breed and raise families.
Half of world’s primates face extinctionWhat is the maj or cause that half of the primate species face extinction

A.
Habitat loss.
B.
Human hunting.
C.
Lack of food.
D.
Destruction from tourism.
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参考答案:
举一反三

【单选题】Section BDirections: There are 2 passages in this section.Each passage is followed by some questions or unfinished statements.For each of them there are four choices marked A, B, C and D.You should de...

A.
to be collaborative and altruistic
B.
to act independently and individually
C.
to understand cooperation just as man does
D.
to know how to achieve success with coordinated action

【单选题】最早、最原始的灵长类动物是

A.
普尔加托里猴
B.
达尔文麦塞尔猴
C.
辛普森氏果猴
D.
阿喀琉斯基猴

【单选题】人及灵长类动物的胎盘为()。

A.
弥散型胎盘
B.
子叶型胎盘
C.
带状胎盘
D.
圆盘状胎盘

【单选题】Half of world’s primates face extinction Almost 50% of the world’s 634 primate (灵长类动物) species face extinction, according to a report from the International Union for the Conservation of Nature. Habit...

A.
they make too much noise for people to bear
B.
there is demand for monkey meat and baby monkeys for pets.
C.
they are too small to survive the severe environment.
D.
they are easily tracked down by other big animals.
相关题目:
【单选题】Section BDirections: There are 2 passages in this section.Each passage is followed by some questions or unfinished statements.For each of them there are four choices marked A, B, C and D.You should de...
A.
to be collaborative and altruistic
B.
to act independently and individually
C.
to understand cooperation just as man does
D.
to know how to achieve success with coordinated action
【单选题】最早、最原始的灵长类动物是
A.
普尔加托里猴
B.
达尔文麦塞尔猴
C.
辛普森氏果猴
D.
阿喀琉斯基猴
【单选题】人及灵长类动物的胎盘为()。
A.
弥散型胎盘
B.
子叶型胎盘
C.
带状胎盘
D.
圆盘状胎盘
【单选题】Half of world’s primates face extinction Almost 50% of the world’s 634 primate (灵长类动物) species face extinction, according to a report from the International Union for the Conservation of Nature. Habit...
A.
they make too much noise for people to bear
B.
there is demand for monkey meat and baby monkeys for pets.
C.
they are too small to survive the severe environment.
D.
they are easily tracked down by other big animals.
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