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
新概念英语第一册 Lesson 131:Don’t be so sure
新概念英语第一册 Lesson 39:Don’t drop it
新概念英语第一册 Lesson 59:Is that all
新概念英语第一册 Lesson 73:The way to King Street
新概念英语第一册 Lesson 135: The latest report
新概念英语第一册 Lesson 67:The weekend
新概念英语第一册 Lesson 89:For sale
新概念英语第一册 Lesson 123: A trip to Australia
新概念英语第一册 Lesson 75:Uncomfortable shoes
新概念英语第一册 Lesson 105:Full of mistakes
新概念英语第一册 Lesson 97:A small blue case
新概念英语第一册 Lesson 71:He’s awful
新概念英语第一册 Lesson 103:The French test
新概念英语第一册 Lesson 121:The man in the hat
新概念英语第一册 Lesson 53:An interesting climate
新概念英语第一册 Lesson 83:Going on holiday
新概念英语第一册 Lesson 63:Thank you,doctor
新概念英语第一册 Lesson 137:A pleasant dream
新概念英语第一册 Lesson 55:The Sawyer family
新概念英语第一册 Lesson 115: Knock,knock
新概念英语第一册 Lesson 99:Owl
新概念英语第一册 Lesson 57:An unusual day
新概念英语第一册 Lesson 111:The most expensive model
新概念英语第一册 Lesson 65:Not a baby
新概念英语第一册 Lesson 77:Terrible toothache
新概念英语第一册 Lesson 81:Roast beef and potatoes
新概念英语第一册 Lesson 127:A famous actress
新概念英语第一册 Lesson 101:A card from Jimmy
新概念英语第一册 Lesson 87:A car crash
新概念英语第一册 Lesson 119:A true story
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