树桩盆景的修剪中，一般对______应予清除。
A．老叶
B．病枯枝
C．有碍造型观赏的枝条
D．僵枯枝
参考答案：A,B,C
补全对话
A: 1 is your favorite 2 ?
B: 3 favorite subject is art.
A: 4 do you like art?
B: Because 5 interesting.
A: 6 is your art teacher?
B: My art teacher is Mr. Liu.
心悸伴消瘦及出汗可见于
A．甲状腺功能亢进
B．心肌炎
C．心脏神经官能症
D．感染性心内膜炎
E．心包炎
