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  3. Most of the elephants you see are Indian elephants. But sometimes you see an African elephant. You can easily tell the two apart

Most of the elephants you see are Indian elephants. But sometimes you see an African elephant. You can easily tell the two apart

admin2010-06-18  61
问题    Most of the elephants you see are Indian elephants. But sometimes you see an African elephant. You can easily tell the two apart by looking at their ears. African elephants have ears at least twice as big as those of an Indian elephant. But there are also many other differences between the Indian elephant and its African cousin.
    The Indian elephant has a bulging forehead and a back that is convex, or bowed out. The African elephant has a sloping forehead, and its back usually has a dip in it behind the shoulders. The trunk of the Indian elephant tends to be smoother than that of its African cousin. Indian elephants have five toenails on their front feet and four on their hind feet. African elephants may have one nail fewer on each foot.
   Indian elephants roam the forests of India, Sri Lanka, Burma, Malaysia, Sumatra, and Borneo. African elephants range over most of Africa south of the Sahara.
   Some scientists divide African elephants into two species -- the larger bush elephant and the smaller forest elephant. The forest elephant lives in the Congo River basin. It has smaller rounder ears, and it grows only about 2.5 meters tall. Adult bush elephants are somewhat larger even than Indian elephants. Big males may be 3.5 meters high at the shoulder and weigh more than 6 metric tons.
   Both Indian and African elephants have all the toes on each foot enclosed in a common covering of skin. Only the toenails show. Both, as adults, have tough, leathery hides that may be an inch thick. Both have very little hair. But their eyes are fringed with lashes that sometimes measure more than 12 centimeters long. And their tails are tipped with clusters of thick, wiry hair. Both Indian and African elephants live in herds, and their ways of life are very much the same.
Which of the following is NOT true of the African elephants?
选项 A、They live to the south of the Sahara.
B、They can be divided into two species.
C、They are all larger than Indian elephants.
D、They have bigger ears than the Indian elephants.
答案C
解析
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