洒水车在晨曦中辛勤的工作，已知汽车自重2.5吨，满载时装水10吨，共有10个轮胎，每个轮胎与地面的接触面积为0.05m²。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

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,

    How are you? As a exchange student, I am writing to tell you I prefer to move into a single room in next term, as I find it inconvenient to share a room with others. My roommate often held parties at night, made much noise. Besides, his friends are always visiting him, that disturbs me a lot. So I hope to draw your attentions to this problem. If you think in my position, I am sure he will agree that the only solution for me is get a room of my own, one not in the same building and as near to the school campus as possible. I would be gratefully if you could do me the favor.

                                                                                                                                                                                                  Li Hua

    People and animals live in the same world. We should keep the balance（平衡）b____ people and animals. If the balance is destroyed，there will be bad result to both people and animals. Wild animals are friends of people. We have to p____ them， or there will be no wild animals in the future. Now we know that there are  n____ 2，000 nature reserves(自然保护区) in China

    There is a black and white animal l____ in China. It is always known as the national treasure(国宝) of China. Everyone knows it is c____ Giant panda. Now there are f____ pandas than before. Most of them live in Sichuan and Gansu Provinces. There are also some other rare animals in China. H____， the n____ is becoming smaller and smaller than before. So people should try t____ best to help these animals. They are in d____ of disappearing from the world.

到5月31日，甲型H1N1流感疫情已经造成99人死亡，15000多人感染，遍及全世界54个国家。据此回答小题

人贵诚信，诚信是一种美德，诚信是一种资源。你所在班级准备开展“诚信有约”活动，请你针对本班的情况，拟定一份《诚实守信承诺书》供班级同学签订并执行，承诺书字数不少于100字。