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（\）划掉；

修改：在错的词下画一横线，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5处，多者（从第6处起）不计分。

Dear Tom,

    I'm glad to know you are crazy about traditional Chinese medical science but eager to study it following an expert. I'd like to recommend Mr. Zhang like your teacher. Mr. Zhang is professor in this field. He often gives medical care to people who have healthy problems. So you can turn to him and to learn medical knowledge from him.

Yours,

Lily

如果你是大海，____；

如果你是峰峦，何必在乎别人把你当作平地；

如果你是春色，____；

如果你是种子，____；

如果你就是你，那就静静微笑，沉默不语。

下列关于生物圈的说法正确的是（　　）