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{{B}}Space-Age
Archeology{{/B}} It’s a strange partnership, but a very effective one: Satellites and space-shuttle-carried radar are helping archeologists. How By "seeing" through sand or through treetops to locate important archeological sites. The traditional tools for archeologists are shovels and picks. But high technology is making the archeologist’s work and time far more productive. Take for example, the second 1981 flight of the Space Shuttle Challenger. During the mission, a powerful, experimental radar was pointed at a lifeless stretch of desert in Egypt called the Selima Sand Sheet(part of the Sahara Desert). To everyone’s surprise, the radar penetrated through the sand to the harder rock beneath. On the surface, there A. a new stretch of the Sahara desert B. traces of ancient riverbeds under the Sahara Desert C. some traditional archeological tools in the Sahara Desert D. a mountain beneath the Sahara Desert 更多"下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。{{B}}第"的相关试题: [单项选择] 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。 {{B}}第一篇{{/B}} (2002年理工A级阅读理解考题)
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