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来源：百度知道 编辑：UC知道 时间：2024/06/04 03:50:29
Passage 1
The word horsepower was first used 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 munite. He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
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 horsepower engine.
51. The selection says that Watt made the first__________.
A. engine B. steam engine
C. widely used steam engine D. useful engine
52. Watt wanted to find a way to__________.
A. measure the work his engine could do
B. tell people how his engi
The word horsepower was first used 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 munite. He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
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 horsepower engine.
51. The selection says that Watt made the first__________.
A. engine B. steam engine
C. widely used steam engine D. useful engine
52. Watt wanted to find a way to__________.
A. measure the work his engine could do
B. tell people how his engi
51.
C. widely used steam engine
52.
D. Both A and B
53.
a horse
54.
A. work a horse could do in minute.
55.
B. The Origin of the Term Horsepower.
51.
C. widely used steam engine
答案见James Watt had made the world’s first widely used steam engine.
52.
D. Both A and B
答案：Watt decided to find out how much work one strong horse could do in one munite.(to tell) people exactly how powerful it was
53.
a horse
答案“He discovered that a horse could lift a 3300-pound weight 10 feet into the air in one minute
54.
A. work a horse could do in minute.
55.
B. The Origin of the Term Horsepower