假定英语课上老师要求同桌之间交换修改作女文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

刪除：把多余的词用斜线(\)划掉。

修改：在错的词下划一横线。并在该词下面写出修改后的词。

注意：①每处错误及其修改均仅限一词：

②只允许修改10处，多者(从第11处起)不计分。

    Last weekend, my classmate and I went on a camping trip near the river. It was not long distance, so we chose to get here by bike.

    We started with early in the morning. On the way, we talked about that we saw around. It takes about half an hour to get to the place. On arriving, some girls sat down, had her breakfast and listened to the birds sings. Some admired the river while others drew pictures. My friends and I found a quietly place and went fishing. To our surprise, we got much fishes.

Time passed so quickly and we had to say goodbye. I enjoyed the pleasant or exciting trip.

读“俄罗斯略图”完成下列各题。

学完三国两晋南北朝的历史后，你认为对这一时期的基本特征的描述，最为准确的是（    ）