慢性肺心病的病因按原发病的不同部位,可分为()
A.支气管、肺疾病
B.肺血管疾病
C.肺小动脉炎
D.胸廓运动障碍性疾病
E.脊柱病变
参考答案:A, B, D
选词填空。
密 蜜 ( )糖 秘( ) 蜂( ) ( )林
蓝 篮 ( )天 ( )球 ( )子 ( )色
It's more than 8 years since I a teacher. [ ]
A. become
B. have become
C. became
D. becomes