By moving the radar beam around slowly in circles, we can _____ the surroundings.
A. explore B. expose C. exploit D. addle
[addle]
addle 混乱的、糊涂的
addle egg 变坏了的蛋
[/addle]
[explore]
explore 开发、研究、探索
[/explore]
[expose]
expose 暴露
[/expose]
[exploit]
exploit 开发、剥削
explode 爆炸
lodestar 北极星
the exploited 被剥削者
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