The mountains form a natural between the two countries so they have no trade relations in history.A.

题目简介

The mountains form a natural between the two countries so they have no trade relations in history.A.

题目详情

The mountains form a natural            between the two countries so they have no trade relations in history.
A.exchange
B.bridge
C.barrier
D.fence
题型:单选题难度:偏易来源:不详

答案

C
这两国之间在历史上之所以没有贸易往来,是因为它们之间有一道天然屏障,难以逾越。如果是fence,则指实实在在的栅栏,难以构成障碍。

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