单选题 2.  After interviewing several workers, she came to a (an) ______ that their working conditions were very poor.
【正确答案】 C
【答案解析】 本题考查近形词辨析和固定表达。Come to a conclusion得出结论;
   A.observation观察;B.illustration幻觉;
   D.qualification资格,胜任。