【正确答案】 A

【答案解析】search: (常与for连用，多指找人或丢失的物)搜索，搜寻；探查，查究：I searched everywhere for the book. 我到处找这本书。seek: (常与for，after连用，意思要抽象些)搜寻，寻找，寻觅：We sought an answer to the question, but couldn't find one. 我们寻求这个问题的答案，可是没能找到。find out: 发现；揭露：I've found you out at last. 我终于把你揭露了。