卧室里面有电视的要比卧室里面没有电视的学生分数低，可以判断卧室里面有电视的孩子经常看电视。因此正确答案为。
Those with TVs in their bedrooms scored about eight points lower on math and language arts tests than children without bedroom TVs.
不管怎样，我们已经使用了过滤器来确保为输入提供了正确答案。
Either way, we have used the filters to ensure that the correct response is given to the input.
科学在于为问题定义正确的答案。
The science lies in defining the correct set of questions to ask.
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