激劝β受体可引起A心脏兴奋，血压下降，瞳孔缩小B心脏兴奋，支气管扩张，糖原分解增加C心脏兴奋，皮肤粘膜和内脏血管收缩D心脏抑制，支气管扩张，瞳孔缩小