语法与词汇 7.After speaking for three hours, the lecturer found he could scarcely talk, as he had become______.

【正确答案】 C

【答案解析】C项“hoarse嘶哑的”符合题意。其他三项“A项dumb哑的，无说话能力的；B项inarticulate不善言辞的；D项speechless不能说话的”都不正确。本题的意思是演讲者话讲得太多了，以至于嗓子嘶哑说不出话来。因此C项为正确答案。