下列物质属于相关细胞产物或细胞的组成分，其中都能体现细胞分化的一组是（　　）

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。作文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏子符号（∧）并在其下面写出该加的词。

删除：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。

Dear Jack,

    How is everything going recently? I'm writing to tell you something more about my birthday. The other day we hold aparty to celebrate my 18th birthday. I received many presents from my friends and parents, including cards, books, CDs or so on. During the party we sang and danced, having good time. I thanked my friends for his help and company. At the meantime, I showed my sincere appreciation to my parents for bringing me up. Now I grow up, that means I should shoulder more responsibilities. I'll try my best to share more houseworks to reduce their burden. It's high time that I dosomething to repay them.

    How did you celebrate your 18th birthday? I'm looking forward to hear from you soon.

                                                                                                                                                                                 Yours Sincerely

                                                                                                                                                                                        Li Jin

____   ____   ____   ____   ____   ____   ____   ____  ____   ____

下列生活行为符合“绿色、节能、低碳”的是（     ）

已知函数$f\left(x\right)=1+\sin \frac{\mathrm{\pi }\mathrm{x}}{2}$，若有四个不同的正数$x_i$满足$f\left(x_i\right)=M$（$M$为常数），且$x_i<8$，$(x_i=1,2,3,4)$，则$x_1+x_2+x_3+x_4$的值为（    ）

我国成功完成鲤鱼全基因组测序，为鲤鱼基因组辅助育种研究、优良品种快速培育提供了重要基础。这项研究成果对哲学研究有重要启示作用。上述材料表明（  ）