以下哪种心脏病最不易出现心力衰竭()
A.房间隔缺损
B.室间隔缺损
C.动脉导管未闭
D.法洛四联症合并贫血
E.扩张型心肌病
参考答案:A
Linda ,make sure the tables ____ before the guests arrive.
A.be set
B. set
C.are set
D. are setting
写出食用菌的营养特点。