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。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：在缺词处加一个漏字符号（∧），并在下面写出该加的词。

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。

Dear Sir/Madam,

    I'm one of your customer. I ordered a set of books on your website two weeks ago, but I didn't received it until yesterday. And much to my disappointment, the books were too poorly packed up that the cover of one book were torn. To make matters worse, it is not a complete set, as I found one book missed.

    I'm sorry to have received such poorly service, and I believe I have every right ask you to deal with this problem. I hope you either return my money back or deliver a new set of books to me. Beside, I'd like to be informed of the process of your deal with my complaint.

    I'm looking forward to your reply.

Li Hua

如图：在一根长100cm，粗细均匀的轻质木棒左端挂有100g砝码，右端挂有内盛66g氧化钙和碳酸钙的混合粉末的小桶(小桶质量为34g)。以A点为支点时，木棒平衡。向小桶内加入304.4g的稀盐酸，恰好完全反应后，生成二氧化碳气体4.4g，木棒失衡。如果将支点移动，木棒再次平衡。

中共中央办公厅印发《关于培育和践行社会主义核心价值观的意见》，要求深入贯彻落实党的十八大提出的“三个倡导”，积极培育社会主义核心价值观。“三个倡导”是指（   ）

①倡导富强、民主、文明、和谐  ②倡导自由、平等、公正、法治

③倡导爱国、敬业、诚信、友善  ④倡导明礼、诚实、遵纪、守法

注：Ⅰ、Ⅱ、Ⅲ、Ⅳ代表四种限制酶，箭头指向的位置为限制酶的切割位置；Amp′是氨苄青霉素抗性基因，Neo′是G418抗性基因．