题目

下列关于细胞学说及其建立的叙述，正确的项数是（  ） ①细胞学说认为细胞分为真核细胞和原核细胞②细胞学说的重要内容之一是：一切动物和植物都是由细胞发育而来的③细胞学说主要是由施莱登和施旺提出④细胞学说揭示了细胞和生物体结构的统一性． A . 一项 B . 两项 C . 三项 D . 四项 答案：C6．假定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，每句中最多有两处．错误涉及一个单词的增加、删除或修改．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．I ordered a birthday gift for my sister on the Internet three days ago．The gift whose the price is not high is a beautiful pink cup decorating with my sister's name，her date of birth，and some best wishes to her as well．It's such lovely a cup with a picture of a cartoon dog on it that both my sister and I liked it by first sight．Besides，I am very satisfying with Alipay Security Control，which is very convenienct and safely．And I am pleased with the delivery service．I received the cup yesterday．Don't you think it's very fast？He enjoy shopping online very much．There is no doubt that more and more people preferred to shop online nowadays．We don't need spend much time going to the shops or markets with such a good number of different choice on the Internet．