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  3. Elephants are the biggest animals that live on land (some whales are bigger than elephants but whales live in the sea), when bor

Elephants are the biggest animals that live on land (some whales are bigger than elephants but whales live in the sea), when bor

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问题    Elephants are the biggest animals that live on land (some whales are bigger than elephants but whales live in the sea), when born a baby elephant weighs 91 kilograms. That is the weight of a grown man. It is about 91 centimeters high. When it reaches the age of six years, it is about 183 centimeters high. (30) When it reaches the age of twelve years, it does not grow any more. It may then be 320 centimeters high. African elephants are bigger than Indian elephants. African elephants have much bigger ears.
   Elephants have very long noses which we call "trunks". No other animals have trunks as long as elephants. An elephant can use its trunk to smell things and it can also pick up things with the tip of its trunk. The tip of its trunk can be used like a hand.
   An elephant uses its trunk to feed itself. It likes to eat leaves, young juicy branches of a tree and fruit. It picks these with its trunk and puts the food into its mouth. When it wants a drink, it puts the tip of its trunk into water. It fills its trunk with water and then blows the water into the mouth. The elephant washes itself in the same way. It fills its trunk with water and then blows the water over itself.
   Two of the elephant’s teeth are very long and strong. They are called "tusks". They use their tusks to dig up small trees and to dig in the ground for water. Elephants also use their tusks to lift heavy logs of wood. In some countries men catch wild elephants and teach them to work. After a while they are no longer wild. They become tame. They become very obedient. They do what their masters tell them to do. All day long they work patiently in the hot sun. They pull trees along and lift heavy logs. No animal is stronger than an elephant.
   Elephants have very strong legs. Their legs are like trees. They usually walk slowly because they are so big, but they walk very quietly.
An elephant is about 183 centimeters high when______.
选项 A、it was born
B、it is six years old
C、it reaches the age of twelve
D、it does not grow any more
答案B
解析
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