【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
the choice between spiritual encouragement and monetary rewards
B.
the amount of monetary rewards for students'creativity
C.
the study of relationship between actions and their consequence
D.
the effects of external rewards on students'performance