高等无脊椎动物是从哪一类动物开始的（） ["腔肠动物","扁形动物","假体动物","环节动物"]
喉中间腔位于（） ["声门裂与喉口之间","前庭裂与喉口之间","前庭裂与声门裂之间","声门裂与气管之间"]
血海穴善于治疗的是（） ["腹痛","乳痈","四肢疼痛","胸胁痛","瘾疹、湿疹、丹毒"]
大包穴善于治疗的是（） ["A.腹痛","B.乳痈","C.四肢疼痛","D.胸胁痛","E.瘾疹、湿疹、丹毒"]
以左室后负荷增加为主要病理生理改变的是（） ["二尖瓣狭窄","二尖瓣关闭不全","主动脉瓣狭窄","主动脉瓣关闭不全","三尖瓣狭窄"]
简述贵州自然风光资源的特点。
