A. a diagnosis of lung cancer B. the development of lung cancer C. a new technique to detect lung cancer earlier D. lung -cancer mortality 参考答案:C 答案解析:[参考译文]本文的主要意思是有关。 [试题分析]本题为宗旨题。 [详细解答]本文主要介绍一项早期检测肺癌的技术。因此C为正确选项
第29题:[单选题]The machine zero is( )。 A.Determined by the machine tool manufacturer B.Determined by the programmer C.On the worktable D.On the workpiece 参考答案:A