单选题 Lack of confidence in his own abilities is the chief defect in Mike's character.
【正确答案】 C
【答案解析】画线词defect是B.effect.的反义词,C.weakness的近义词。正确答案为C。辨义:其他词的含义是:A.defeat战胜、击败;D.device设计、装置。