第28题: [单项选择]According to the passage, Corona is ______. A. the first in a long series of satellites for development B. an orbiting satellite for photo-reconnaissance C. one satellite which launched 95 other satellites D. a missile against the Soviet Union 参考答案:B 答案解析:细节题。从第二段第四句话;“采用从太空轨道卫星对地球进行照相侦察的Corona被列为美国的最高机密项目”可知Corona是一颗太空轨道照相侦察卫星,故选B。