目的视觉功能主要取决于( )。
男,63岁。既往有高血压病史。突然呼吸困难,心电图V₁、V₂导联R>S,V₇、V₈导联有Q波达0.04秒,CK-MB升高,最可能的诊断为( )。
下壁心肌梗死
前壁心肌梗死
肺梗死
高侧壁心肌梗死
正后壁心肌梗死
English classroom activities for elementary and middle schools can be divided into four types: start-up, language learning,____ and summary.