【题目】Those who worked whole-heartedly without _____ should be praised.
A.concernB.conscienceC.carelessnessD.conceal
在线课程【答案】C
【解析】
考查名词词义辨析。句意：那些全心全意工作而不粗心的人应该受到表扬。A. concern关心；B. conscience良心；C. carelessness粗心；D. conceal隐瞒。全心全意与粗心含义相反，用without连接。故选C项。