太空与人PDF电子书下载

Unit One Nicolaus Copernicus 1

Unit Two Galileo 19

Unit Three Isaac Newton 37

Unit Four Albert Einstein 54

Unit Five Samuel Langley 71

Unit Six Edwin Hubble 90

Unit Seven R.Buckminster Fuller 108

Unit Eight The Wright Brothers 125

Unit Nine Robert Goddard 143

Unit Ten Igor Sikorsky 163

Unit Eleven Wernher von Braun 180

Unit Twelve Charles Lindbergh 198

Unit Thirteen Amelia Earhart 218

Unit Fourteen Jacqueline Cochran 237

Key to the Exercises 255