Mr. Wang and his students _____ a lesson now. [ ]
A. are having
B. had
C. have
答案:A
提出目标管理的管理学家是()
A.巴纳德
B.韦伯
C.孔茨
D.德普克
E.梅德
假设a,b,和c都是整型变量,且值都是5,执行a-=++b+c--;则a,b,和c的结果分别是 [5] 。