题目

Try the new cleaner．Just a few minutes every day—that’s all it takes—______you could have shining floors and furniture．        A．and                 B．but                  C．or                   D．so 答案：A8．下列生物与其所属的类群配对正确的是？（　　）A．松树  裸子植物B．满江红  苔藓植物C．铁线蕨 苔藓植物D．水稻  藻类植物