书面表达（满分30分）
随着人们环保意识的提高，越来越多的人选择低碳生活（low-carbon lifestyle）。假设你是校英语协会主席李华，请写一篇英语倡议书，从出行、购物、用水、用电四个方面倡议同学们选择低碳生活。
注意：1．词数；l20左右；
2．开头和结尾已经给出，但不计入总词数：
3．参考词汇：排放emission
Dear fellow students,
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
Dear fellow students, let's take action right now!