一、根据课文,回答下列问题 1、What do you think of Mark Twain? 2、What did Mark Twain 's first friend say? 3、Where did Mark Twain 's second friend live? 4.Can you tell us why the echo in that church is so unusual that if one asks in a loud voice? 二、翻译下列句子为中文 He travelled very much giving speeches in many places. In many places the echo of a voice came back five times stonger than original voice. 3、片刻(瞬间)之后,回音(声)很清楚地返回(重复)。