下列说法中错误的是 [ ]

A 四个角相等的四边形是矩形

B 对角线互相垂直的矩形是正方形

C 对角线相等的菱形是正方形

D 四条边相等的四边形是正方形

非选择题部分（共40分）

第三部分 写作（共两节，满分40分）

第一节 短文改错 (共10小题；每小题1分，满分10分)

下面短文中有10处语言错误，请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加—个漏字符号(/\)，并在其下面写出该加的词。

删除：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)不记分。

As students, we had classes from early morning till late afternoon. Therefore, take a ten-minute break between class is definitely important, even is necessary. Otherwise we may feel both physically and mentally tired. During the ten-minute break we do something to get rid of tiredness. That we need is to have a real rest, instead getting more tired. So don’t do anything that will make yourself too exciting. Your ten-minute break is always pleasing. I usually do some simple exercises. Sometime I have free chat with my classmates or just take a walk during the break. When the new class begins, I feel fresh again.