现代教学技术的优越性集中表现在( )
A．提高教学效率 B．减少教材难度C．减轻教师的工作量 D．有利于学生的实际训练
参考答案：A
The engineer spoke highly of the government's efforts, _____ he owed his safe return from Libya. [ ]
A. through which
B. to which
C. with whom
D. for whom
( )原则是指建设项目管理的薪酬策略应在社会上进行同类相关比较后保持合理的吸引力。
A．公平性B．竞争性C．激励性D．经济性
