The word horsepower was first used two hundred years ago. James Watt had made the world’s first widely used (11) . He had no w

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问题    The word horsepower was first used two hundred years ago. James Watt had made the world’s first widely used  (11)  . He had no way of telling people exactly how powerful it was, for  (12)  there were no units for measuring power.
   Watt decided to find out how much work one strong horse could do in  (13)  . He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
   He discovered that a horse lift a  (14)  weight 10 feet in one minute. Because his engine did  (15)  as much as the horse, Watt called it a ten-horsepower engine.
The word horsepower was first use two hundred years ago. James Watt had made the world’s first widely used steam engine. He had no way of telling people exactly how powerful it was, for at that time there were no units for measuring power.
   Watt decided to find out how much work one strong horse could do in one minute. He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
   He discovered that a horse lift a 3300-pound weight 10 feet in one minute. Because his engine did ten times as much as the horse, Watt called it a ten-horsepower engine.

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答案steam engine

解析 该题测试听懂实义名词的能力。做题时,应该根据听到的读音和上下文的意思判断答案。由于该题盼空格不是常用词,不容易听出来。但空格中的词汇是全文的中心词,在下文中会重复出现。因此要注意从上下文中判断。听到读音后仍然辨别不了或听不清楚。可从下一段的内容中找到该词组。
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