激发内发动机的途径不包括（）。
A.创设情境
B.实施发现学习
C.开展合作学习
D.适当开展竞赛
参考答案：D
For many cities in the world, there is no room to spread out further, _____ New York is an example. [ ]
A. for which
B. in which
C. of which
D. from which
各脏阴阳的根本在于（）
A.肝
B.心
C.脾
D.肾
E.肺
