2. 外语
  3. Today, most countries in the world have canals. Many countries have built canals near the coast, and parallel to the coast. Even

Today, most countries in the world have canals. Many countries have built canals near the coast, and parallel to the coast. Even

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问题     Today, most countries in the world have canals. Many countries have built canals near the coast, and parallel to the coast. Even in the twentieth century, goods can be moved more cheaply by boat than by any other【C1】______ of transport. These【C2】______ make it possible for boats to travel between ports along the coast without being【C3】______ to the dangers of the open. Some canals, such as the Suez and the Panama, save ships weeks of time by making their【C4】______ a thousand miles shorter. Other canals permit boats to reach cities that are not located on the coast, still other canals【C5】______ lands where there is too much water, help to【C6】______ fields where there is not enough water, and furnish water power for factories and mills. The size of a canal【C7】______ on the kind of boats going through it. The canal must be wide enough to permit two of the largest boats using it to pass each other easily. It must be deep enough to leave about two feet of water beneath the keel of the largest boat using the canal. When the planet Mars was first  【C8】______ through a telescope, people saw that the round disk of the planet was criss-crossed by a number of strange blue-green lines. These were called "canals "because they looked the same as canals on earth that are viewed from an airplane. However, scientists are now【C9】______ that the Martian phenomena are really not canals. The photographs taken from spaceships have helped us to【C10】______ the truth about the Martia "canals".
   A. soak       B. means       C. depends       D. channels       E. observed
   F. bases      G. waterways   H. certain       I. drain          J. discover
   K. voyage     L. irrigate    M. exposed       N. route          O. definite
【C1】
选项
答案B
解析 means of transport意为“交通工具”，固定搭配。
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