【单选题】听力原文: From the beginning rivers have played an important part in the life of man. (29) Man of the earliest times used the rivers as a mean of travel. Today rivers still serve as a great waterway for t...
【单选题】Passage Five From the beginning rivers have played an important part in the life of man. Man of the earliest times used the rivers as a means of traveling. Today rivers still serve as a great waterway...