数量管理理论产生于第二次世界大战期间，它以现代自然科学和技术科学的成果为手段，它的基础是____

B．A society which thinks of ways of recycling waste materials

C．A society which keeps everything

D．A society which saves electricity

B．痛苦不安

C．感到惴惴不安

D．感到极端焦虑

B．①③④

C．②③⑤

D．①③⑤

此题为判断题(对，错)。

B．归属感

C．工人的士气

D．受人尊重

B．复式教学

C．分组教学

D．班级教学

B．小仲马《茶花女》

C．莫泊桑《羊脂球》

D．茹志鹃《百合花》

B．We should focus on happy or joyful people

C．Happy or joyful people among us also need improve their mentality

D．The number of academic articles about such positive psychology needs to be published more in the future