第7题: [单项选择]In his two-hour-long lecture he made an {{U}}exhaustive{{/U}} analysis of the issue. A. extremely thorough B. long and boring C. superficial D. unconvincing 参考答案:A 答案解析:exhaustive是“透彻的,彻底的”的意思,如:exhaustive study(透彻的研究), exhaustive investigation(深入的调查),所以extremely thoro