A、Examples such as this demonstrate that incentives can be very effective.
B、If the penalty had been greater, perhaps it would have had the desired effect.
C、Clearly, rewards are more effective in most situations than punishments.
D、Many schools have also implemented effective after-school reading programs.
E、I’m not sure what the school decided to do with the program, since it wasn’t working.
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试题解析
插入句是在对一项鼓励措施没有效果的讨论之后，在这段话的结束语之前，因此插入此处的句子应能对这个鼓励项目做个总结，B符合。因为这个句子主要讨论了这个鼓励项目不起作用的原因，A和D不合逻辑。C不合适，因为这段话没有讨论奖励和惩罚的价值。E没有传达出任何与讨论相关的信息。
