1957年10月苏联成功发射第一颗人造卫星,揭开了人类历史由地球迈向太空的第一页。此后短短半个世纪里,人类的外空探索活动突飞猛进,取得了辉煌的成就。人类不仅成功登陆月球,而且还将研究的触手伸向火星等更为遥远的星球。截止到2006年底,环绕地球飞行的各类人造

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问题     1957年10月苏联成功发射第一颗人造卫星,揭开了人类历史由地球迈向太空的第一页。此后短短半个世纪里,人类的外空探索活动突飞猛进,取得了辉煌的成就。人类不仅成功登陆月球,而且还将研究的触手伸向火星等更为遥远的星球。截止到2006年底,环绕地球飞行的各类人造物体,包括人造卫星、航天飞机、国际空间站、空间实验室等接近6000个。

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答案On October, 1957, the Soviet Union successfully launched the first artificial satellite, which turned the first page in human history of entering the space. During the half century coming after, humans’ explorations in outer space have grown by leaps and bounds and have made brilliant a-chievements. Humans not only successfully landed on the moon, but also reached toward even more distant planet such as Mars. At the end of 2006, the number of the various types of artificial objects flying around the Earth, including satellites, space shuttles, international space stations, space laboratories, etc. is already close to 6,000.

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