15. Human beings can see the spatial relations among objects by processing information conveyed by light. Scientists trying to build computers that can detect spatial relations by the same kind of process have so far designed and built stationary machines. However, these scientists will not achieve their goal until they produce such a machine that can move around in its environment.
Which of the following, if true, would best support the prediction above?
(A) Human beings are dependent on visual cues from motion in order to detect spatial relations.
(B) Human beings can often easily detect the spatial relations among objects, even when those objects are in motion.
(C) Detecting spatial relations among objects requires drawing inferences from the information conveyed by light.
(D) Although human beings can discern spatial relations through their sense of hearing, vision is usually the most important means of detecting spatial relations.（A）
(E) Information about the spatial relations among objects can be obtained by noticing such things as shadows and the relative sizes of objects.无关
这题花时1分28秒，选了B。
归纳题，人类能通过分析光线传来的信息看到空间，科学家建立固定的机器==》建立机器能移动的。
这题能排除后三个选项 在A和B中不知怎么选
请教这题的思路
谢谢
Conclusion of the passage: "scientists will not achieve goal until they produce such a machine that can move around in its environment." Remember, "machine" is the observer here.
B talks abut the observed objects in motion. It is not relevant to the conclusion, because the conclusion is concerned of the observer in motion, not the observed in motion.
A offers good support to the conclusion, becuase it provides that "human beings", also observer, move around and depend on visual cues from the motion to detect spatial relations.
谢谢lawyer robertchu
我终于明白了
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