题目

Thinking that the students were having an evening class, the teacher left the classroom, ______.   A. slowly and gentle                B. slowly and gently   C. slow and gentle                  D. slow and gently 答案：B小红采集到一种植物，已知这种植物有以下特征：①产生种子 ②叶脉为网状叶脉③子叶2片，她可以确定该种植物属于 A．双子叶植物       B．单子叶植物        C．裸子植物         D．蕨类植物