动机强度与学习效率之间的关系是( )。
A．成正比关系
B．成反比关系
C．没有关系
D．成倒U形曲线关系
参考答案：D
The boy is very fat ______ eating ______ food. [ ]
A. because; much too
B. because of; too much
C. because; much too
D. because of; much too
专业技术人员心理健康的现状
