精选优质文档-倾情为你奉上2007年江苏省普通高等学校“专转本”统一考试大学英语第I卷（共100分）Part I Reading Comprehension （共40分）Passage oneUnder proper conditions, sound waves will be reflected from a hillside or other such obstruction. Sound travels at the rate of about one-fifth of mile per second. If the hill is eleven hundred feet away, it takes two seconds for the sound to travel o the hill and back. Thus, by timing the interval between a sound and its reflection (the echo), you can estimate the distance to an obst
