【题目】Her team failed in the competition．She is trying to get to the ____ of why some members gave up midway．
A.bottom
B.floor
C.result
D.effect

【答案】A
【解析】考查固定搭配。固定搭配：get to the bottom of“弄清……的底细，根究”。句意：她的队在比赛中失败了，她正试图找出一些队员中途放弃的原因。故选A。