教师在指导幼儿听说游戏过程中,可以()
A.由内部控制向外部控制转换
B.由内部动机向外部动机转换
C.由外部控制向内部控制转换
D.不作任何控制转换
参考答案:C
Jane was disappointed that most of the guests ______when she _______ at the party.
A.left; had arrived
B.left; arrived
C.had left; had arrived
D.had left; arrived
简述企业战略理论的发展趋势。