首页 / 高中英语 / 试题详细
  • 更新 2022-09-03
  • 科目 英语
  • 题型 阅读理解
  • 难度 中等
  • 浏览 156

There is very simple way of measuring the height of a water-tower, which we cannot measure by climbing.
Suppose, for example, that we wish to find out the height of the water-tower, AB, in a factory. We first of all go to where the water-tower is standing and measure a distance of, say, 25 feet from it. Then we take a stick, and stand it in the ground at the spot we have just marked.
Let us suppose the stick we are using is 4 feet in height. We now walk farther away from the water –tower in the same straight line as when we measured off the distance of 25 feet. We go from the water-tower until we come to point E, where with our head on the ground, we see the top of the stick and the top of the water-tower in the same height line---that is, the top of the stick just covers the highest part of the water-tower. Every schoolboy can work out the height of the water-tower now.
Suppose that the line CE is five feet. We know that the stick is 4 feet high and the distance BE is 30 feet. Thus, 5 is to 4 as 30 is to AB.
If we want to know how high a tall tree is,_______.
A. we have to climb up the tree
B. we have no way out
C. we must cut down the tree
D we needn’t climb up the tree
According to the passage, which of the following is correct?

It is clear from this that the problem can be settled by _________.

A.a child
B.the boy who has little schooling
C.everyone
D.a girl at middle school

To measure a water-tower in this way, _________.

A.no tool is needed
B.Besides a stick, tape-measure (卷尺) or at least a ruler is necessary.
C.we have to use nothing but a stick
D.we have to prepare a set of expensive tools
登录免费查看答案和解析

Thereisverysimplewayofmeasurin