单选题
Information about cities, vegetation, and road overlying the terrain ______.
A、
has to be eliminated before correct readings can be obtained
B、
would be impossible to convert to data that a computer would accept
C、
might lead to new applications and improve effectiveness of present uses
D、
would make ray tracing obsolete
【正确答案】
C
【答案解析】
最后一段Weidhaas提出想在地图上增加cities，vegetation，and road是为了使图像尽量逼真make our advice more effective，这也可能lead to uses we haven't thought of yet，选项C正确。
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