题目内容
Finding the Correct Place
On an island there are exactly seven towns:
T, U, V, W, X, Y and Z. All existing and planned roads on the island are two-way and run perfectly straight between one town and the next. All distances by road are distances the main square of one town to the main square of another town. U is the same distance by road from T, V and W as Y is from X and Z. The following are of the now existing roads on the islands.
Road I goes from T to V via (through... on the way) U.
Road 2 goes directly from U to W.
The triangle road goes from X to Y, from Y on to Z, and from Z back to X. Any main square reached by two roads is an interchange(立交桥)between them, and there are no other interchanges between roads.
(1) Which of the following sketches is correct?
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(2) Draw a sketch of the Triangle Road. Which of the following sketches is correct?
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(3) Which of the following is a town from which exactly two other towns can be reached by road?
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A.T. |
B.X. |
C.V. |
D.W. |
(4) It is possible that the distance by road from X to Y is not the same as the distance by road from
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A.T to U |
B.U to V |
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C.U to W |
D.X to Z |
解析:
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(1) 把Road 1和Road 2图加起来看,再根据文中已知条件,答案即出。(2) 首先明确Y至Z与至X的距离相等,再根据第四段有句“from Y on to Z”,其中on表示向北,即得出答案A。(3) 本题的答案可由两图看出。(4) 本篇只点明Y至X与至Z的距离相等。 |
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