患者,男,22岁 。头痛,以前头部为主,疼痛阵作,痛如锥刺,每当受风或劳累时疼痛加重,舌苔薄,脉弦 。治疗应首选
患者男,78岁。突然出现头痛、呕吐、意识不清,血压200/110mmHg,右侧瞳孔大,左侧偏瘫。此时,最重要的治疗是
患者,男,22岁 。头痛,以前头部为主,疼痛阵作,痛如锥刺,每当受风或劳累时疼痛加重,舌苔薄,脉弦 。治疗应首选
The study of how sounds are put together and used to convey meaning in communication is ______ .