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Most people usually traveled by ship and train which are driven by steam engine. It played an important part in many kinds of vehicles several scores of years ago. Who invented steam engine and what units could be used to measure the power of engine?
The word “horse-power” was first used two hundred years ago. James Watt from a worker‟s family made the world first widely used steam engine. At first, he couldn‟t tell people how powerful it was, because there were no units at that time. Watt decided to find out how much work one strong horse could do in one minute. He named that unit one horse-power. In this way he could measure the work of his steam engine.
He discovered that a horse could lift a 3300-pound weight 10 feet into the air in one minute. His engine could lift a 3300-pound weight 100 feet in one minute. Because his engine did ten times as much work as the horse, Watt called it a ten horse-power engine.
31. The main idea of the passage is __B_.
A. James Watt invented the steam engine
B. James Watt first used horse-power as a unit of measure
C. how much power does a horse have
D. why Watt‟s engine is called a ten horse-power engine
32. The story says that Watt made the first __D__.
A. engine B. horse-power engine C. useful engine D. widely used steam engine
33. James Watt was born in _A___.
A. a worker‟s family B. a farmer‟s family C. a teacher‟s family D. a doctor‟s
steam engine
34. Watt wanted to find a way to _D___.
A. measure the work his engine could do B. tell people how powerful his engine was C. lift a 3300-pound weight D. both A and B
35. One horse-power means the __A__.
A. work a horse could do in a minute B. weight a horse could do in ten minutes C. work a horse could do in ten minutes D. weight of one horse
参考译文：大多数人通常乘轮船和火车，这是由蒸汽机驱动的。几年前，它在许多车辆中起着重要的作用。是谁发明了蒸汽机，用什么单位来测量发动机的功率?
“马权”这个词是二百年前第一次使用的`。詹姆斯·瓦特从一个工人的家庭‟了世界上第一个广泛使用的蒸汽机。起初，他也‟T告诉人们它是多么的强大，因为当时是没有单位。瓦特决定在一分钟内找出一匹强壮的马能做多少工作。他将该单位命名为马的力量。这样他可以测量蒸汽机的工作。
他发现一匹马可以在一分钟内把一个3300磅重的10英尺高的空中举起。他的引擎可以在一分钟内举起一个3300磅重的100英尺。因为他的发动机的工作是马的十倍，瓦特称之为一一零马力发动机。
书香门第
