能清热解毒，疏散风热的药物组是A.金银花和连翘B.连翘和薄荷C.桑叶和菊花###SX

By saying that 'some relationships are a result of argument and discussion' (Line 1, Para. 5) , the author means that______.A．bad relationships are a result of argument and discussionB．connections with people can be developed through discussion and argumentC．argument and discussion can lead to improving personal relationshipsD．arguing and discussing things will sometimes result in friendship 点击查看答案

已知[Ag（NH3）2]+配离子的总稳定常数K稳为1．12×107，则此配离子的总不稳定常数K不稳为（），又若已知其第一级稳定常数K1为1．74×103，则其第二级稳定常数K2为（）。 点击查看答案