题目

Nearly all educators believe that a challenging situation can often ______ the best qualities of a person. A . cheer up B . take over C . bring out D . put away 答案：C“介石先生惠鉴：恩来诸同志回延安称述先生盛德，钦佩无余。先生指导全民族进行空前伟大的民族革命战争，凡我国人无不崇仰。此物此志，知先生必有同心也。专此布臆。敬祝健康！并致民族革命之礼！毛.泽东谨启。民国二十七年九月二十九日。”据此判断，这封信写于       A.北伐战争时期                        B.国共十年内战后期 C.抗日战争时期                        D.重庆谈判后