On Sunday morning. The sun is shining. We have no classes. We are playing in the park. Some girls are singing and dancing under a big tree. Some boys are climbing the hill. Tom is drawing near the lake. Mike and John are swimming in the lake. Where are Betty and Mary? They are sitting under a small tree. They are reading a book. We are very happy.

下列植物分别属于哪一类群？
葫芦藓____                 a 藻类植物
紫菜____                    b苔藓植物
五针松____                  c蕨类植物
肾厥 ____                   d裸子植物
月季 ____                   e被子植物

面临期中考试，小明在紧张的复习阶段仍忍不住打网络游戏。在妈妈的帮助下，小明很好地处理了打游戏与复习功课之间的关系。对小明的行为，认识正确的是            （）            

某同学牙龈经常出血，他平时应该注意常吃（    ）