细胞学说的建立过程是一个经科学家探究、开拓、继承、修正和发展的过程，充满了耐人寻味的曲折。下列说法正确的是[ ]

A．德国科学家施莱登和施旺发现细胞并创立了细胞学说

B．细胞学说认为细胞分为原核细胞和真核细胞

C．德国科学家魏尔肖的名言是“所有的细胞都来源于先前存在的细胞”

D．细胞学说使人们对生命的认识由细胞水平进入分子水平

短文改错（满分10分）

下面短文中共有10处错误，每句中最多有两处。错误涉及单词的增加、删除或修改。

增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。

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

On Saturday afternoon, Li Hua and Wang Ping, members from “ Green Eyes”, was having an environmental protection activity near the riverside when they catch sight of a bird on the ground．

They picked it out and found it wounded．Thinking it might die without timely help, they took it to home．They made a nest for it but fed it with rice and water．Under their treatment and care, the lucky birds got recovered soon．When time came for them fly the bird back to nature, they felt a bit pity but very delighting．

I think it’s worthwhile for him to do such a thing．Here I call on the public to show respect for nature．Only by changing the way we treat the environment can we get along good with it．