题目

____ of danger in the street at night, she had to go home, with a friend ____ her. A. Warned; accompanied                      B. Having warned; accompanying C. Warning; accompanying                    D. Having been warned; accompanying 答案：D某种植物它不需要吃东西也能生活，长得很小，不开花也不结果，具有假根，它常存在于阴暗潮湿并且没有严重污染的地方，它属于哪种植物（　　）A．藻类植物B．苔藓植物C．蕨类植物D．种子植物