【視聽版TIH小組榮譽(yù)出品】
想提高英語聽力水平？ 同時(shí)又想了解世界歷史？
Today In History —— 一次滿足您的兩個愿望！
This Day In History —— 經(jīng)典歷史新聞，回顧塵封史實(shí)


This Day in History
August 3, 1975 - Viking I sends us the first pictures from Mars

Viking I and Viking II were designed by NASA as __1__ fitted with short and long-range cameras to __2(句子)__. In August 1975, a Titan center rocket launched Viking I on its 505 million mile journey. Eleven months later, Viking I went into orbit around Mars, before the laboratory part of the craft separated and made its descent to the surface. Viking I made a successful __3__ and began its study of the planet. Pictures beamed back to Pasadena, California revealed a bright pink sky and a rusty brown landscape on a rocky desert. __4__ of nitrogen were found -- a __5__ as we know it.
space laboratories answer the age-old question of whether life was possible on planet Mars. soft landing Traces vital sign of life