1. 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</exploit>