Realizing ______ I had been able to accomplish, my fears of failure grew rapidly. A. so little B. such little C. how little D. what little 答案:C在一个边长为1000米的正方形区域的每个顶点处都设有一个监测站,若向此区域内随机投放一个爆破点,则爆破点距离监测站200米内都可以被检测到.那么随机投放一个爆破点被监测到的概率为( )A.π100B.14C.12D.π25