题目

以下对生物学史以及生物学实验的描述错误的是（ ） A . 用于鉴定还原糖的斐林试剂和观察DNA和RNA在细胞中分布所用的甲基绿﹣吡罗红混合染色剂都需现用现配 B . 观察线粒体可以用健那绿染色，将活细胞中的线粒体染成绿色，而细胞质接近无色 C . 科研上鉴定细胞死活，常用“染色排除法”．例如，用台盼蓝染色，死动物细胞会被染成蓝色，而活的动物细胞不着色，从而判断细胞是否死亡 D . 1925年，荷兰科学家以丙酮和人的红细胞为材料，测得脂短文改错（共10小题；每小题1分，满分10分）假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。删除：把多余的词用斜线（＼）划掉。修改：在错的词下划一横线，并在该词下面写上修改后的词。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。This term we have a volunteer project called “Big Brothers and Sisters”. It’s a home for the In order to grow as a writer, you've got to be willing to risk it and every time you sit down to write. You've got to open and brave and curious. Whenever I'm asked, "When did you become a poet?" I'm always tempting to say, "When did you stop?"We're all born poet. We all enjoy the sounds of language. Every new parent know that. We're all born with the need to "sound our barbaric yawp over the roofs of the world" as Whitman would have it.Poetry is a natural part of our lives. It's not just everything we have to memorize and reciting in front of the class. Losing ourselves in a poem is one of the better ways of find out who we are. The act of writing brings us to that point of discovery, of discovering something we didn't know we knew when we wrote it.