题目

请结合材料，按要求用英文写作，词数不少于60。     People in the Spring Festival this year set off fewer firecrackers and fireworks than before when they were celebrating the very important lunar festival. 要求： （1）就此材料发表你的感想; （2）应紧扣材料，有明确的观点;  (3) 请在答题卡上作答。                                                                                                                           目前，人们公认的、最理想的生物反应器是：  （        ）A．细菌B．乳房生物反应器C．发酵罐D．真菌