2. 外语
  3. Elephants can be used to do some heavy jobs because______. Many different animals may be taught to do some simple jobs if______

Elephants can be used to do some heavy jobs because______. Many different animals may be taught to do some simple jobs if______

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问题 Elephants can be used to do some heavy jobs because______.
Many different animals may be taught to do some simple jobs if______.
选项 A、they have enough food to eat
B、they learn they will get something to eat in return after doing them
C、they are sent to school
答案B
解析 题干的意思是很多动物在什么前提下可以被教会做简单的工作。A的意思是如果它们有足够的食物吃。B的意思是如果它们知道它们做事情之后会得到些吃的作为回报。C的意思是如果送它们去学校。我们可以从原文中找到相关的内容“The scientists say that many different animals may be taught to do a number of simple jobs if they know they will get something to eat in return．”，据此我们就可以直接作出判断。故正确答案为B。
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