Question

【题目】阅读理解

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

A

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 3,300-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.

【1】 The main idea of the passage is ___________.

A. how much power does a horse have

B. James Watt invented the steam engine

C. why Watt’s engine is called a ten horse-power engine

D. James Watt first used horse-power as a unit of measure

【2】The story says that Watt made the first ___________.

A. widely used steam engine

B. horse-power engine

C. useful engine

D. engine

【3】 James Watt was born in ___________.

A. a farmer’s family

B. a worker’s family

C. a teacher’s family

D. a doctor’s steam engine

【4】One horse-power means the _____________.

A. weight a horse could do in ten minutes

B. work a horse could do in ten minutes

C. work a horse could do in a minute

D. weight of one horse

Answer 1

【答案】

【1】 D

【2】A

【3】 B

【4】C

【解析】文章主要介绍了瓦特发明了蒸汽机以及首次使用马力作为计量单位。

【1】推理判断题。根据文章结尾总结句可知，本文主要介绍了瓦特发明了蒸汽机以及首次使用马力作为计量单位。故选D。

【2】细节理解题。根据第二段第二句… made the world first widely used steam engine.可知，A正确。

【3】细节理解题。根据第二段第二句James Watt from a worker’s family...可知，B正确。

【4】细节理解题。根据最后一段可知，1马力等于一匹马在一分钟内所作的功。故选C。