選B.
這里符合條件的只有A.B兩項,它們的區(qū)別是:
（1）find out
find (sth) out(經研究或詢問)獲知的(某實物)Can you find out what time the train leaves?你能查問出火車什么時候離開嗎?
find sb out 發(fā)現(xiàn)某人做錯事、說謊等：He had been cheating the taxman but it was found out.他一直在欺騙稅務局,但多年之后才被查出.
（2）pick out
pick sb/sth out
（a）挑選出某人[某事物]She was picked out fome thousands of applicants for the job.從數(shù)千申請人中條選出她來做那份工作.
（b）分辨出某人[某事物]It was just possble to pick out the huton the side of the mountain.那小舍座落在山邊,隱約可見.