莲是一种水生植物．当条件适宜时，莲的种子﹣莲子的淤泥中开始萌发，萌发后长成的第一片中必须在几天之内破水而出，在水面上形成浮叶，否则莲会死亡．浮叶提供的有机物让淤泥里的幼体生根并长出一条地下茎，地下茎逐渐形成日后的藕．每小段藕之间同样可以长出叶，它们按照同样方式破水而出，最终形成了神奇的对称现象（如图）

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以下是一名船员的记录，其中的哪一项不可信（    ）

增加：在缺词处加一个漏字符号（∧），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）不计分。

    Mary has been award the title of “Star Student of the Week” for what she did for our class. In the hot afternoon of last Saturday, Mary went downtown and walked from one store to another, looked for the costumes we would wear in the singing contest. While the rest of us were enjoying our leisure times in comfortable classrooms, she spent the whole afternoon searching for and selecting. Finally, she finds the right clothes. Deep moved by her efforts, we tried our best and won first prize in the contest. Mary is warm-hearted so cares about the class. She deserves the honor and we should learn from him.