题目

6.下列关于四种生物的能源、碳源、氮源和新陈代谢类型的描述，正确的一组是(   ) A.硝化细菌，乳酸菌     B.乳酸菌，酵母菌 C.酵母菌，衣藻         D.硝化细菌，衣藻 答案：假如你是李华。上周六你班在老人福利院开展了送温暖活动。请根据以下要点，写一篇短文给学校英文杂志投稿，介绍活动情况。时间、地点；活动内容;你的感受。注意：1、词数100左右；2、可适当增加细节，使文章层次分明，行文连贯；3、文中不得透露个人真实姓名及学校名称。参考词汇：老人福利院 nursing homeA meaningful Social Activity______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________