A. detect nearby objects B. determine the depth of the ocean water C. decide how fast you drive D. in need of radar E. map the o

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问题 A. detect nearby objects
B. determine the depth of the ocean water
C. decide how fast you drive
D. in need of radar
E. map the ocean floor
F. observe water flow
Scientific age is______.

选项

答案D

解析 从第四段“Today,in our scientific age,it would be difficult to manage without radar.”可以看出,科技时代离开了雷达技术是不行的。
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