第27题: [单项选择]Giorgio, now fifteen, and Lucia, also in her teens, were reaching the ______ of their adolescence. A. crisis B. criterion C. causality D. credibility 参考答案:A 答案解析:[解析] 本题空格处是说到了他们的青春转折期。A项”crisis决定性时刻,危机”符合题意。其他三项“criterion(批评判断的)标准,依据,规范;causality因果关系;credibilit