Radar is used to extend the______of man’s senses for observing his environment, especially the sense of vision.

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问题 Radar is used to extend the______of man’s senses for observing his environment, especially the sense of vision.

选项 A、validity
B、liability
C、capacity
D、intensity

答案D

解析 名词词义辨析。validity“正当,正确性,确实”;liability“倾向,责任”;capacity“能力”;intensity“(思想、感情、活动等的)强烈,剧烈,紧张”。选项中,能与extend和man’s senses搭配的名词只有intensity,意为“延伸人类感知程度”。故答案为D。
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