下列句子说明方法判断正确的是（   ）。

陵园的总平面布局，大致可分为南、北两区。南区包括入口的石牌坊和缓长的墓道(在总图上表现如钟下的悬索)。北区包括陵门、碑亭、石阶、大平台、祭堂、墓室等(在总图上表现为钟的本体)。

东北平原的作物熟制为

下列说法中正确的是（   ）

南方地区最主要的自然特征是（    ）

短文改错。便条中共有10处错误,每句中最多有两处。错误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（∧）。并在其下面写出修改后的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词后划一横线,并在该词下面写出修改后的词。
注意：1）．每处错误及修改均仅限一词;
2）．只允许修改10处,多者（从第11处起）不记分。
    One day, I was cooking in the kitchen when the telephone rings. I went to answer it immediately. She was my close friend, Lisa. When we were talking on a phone, the fire alarm sounded. I dashed back to the kitchen. The room full of smoke and the beef was bad burnt. I quickly turned off the gas, opening all the windows, and then rushed out of the house. In my surprise, two fire engines were outside my house. I was rather worrying. I told about the firemen that it was my careless cooking which caused the heavy smoke.