题目内容：
请在（4）处填写正确答案。
A．Interestingly, results show that home-schooled children quite often do better than average on national tests in reading and math. B．Critics also say that most parents are not well qualified to teach their children.
C．Learning starts with the children's interests and questions.
D．Children who are educated at home are known as home-schoolers.
E．In some countries, there are children who are educated by their parents at home instead of by teachers at school.
F．If the Brazilian rain forests are on the TV news, it could be a perfect time to talk about how rain forests influence the climate，how deserts are formed, and how the polar ice caps affect ocean, levels.
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