1. By moving the radar beam around slowly in circles, we can _____ the surroundings.

A. exploreB. expose

C. exploitD. addle



addle混乱的、糊涂的

addle egg变坏了的蛋

explore开发、研究、探索

expose暴露

exploit开发、剥削

explode爆炸

lodestar北极星

the exploited被剥削者