The author' s primary purpose in writing this passage is to_____

A．improve the teaching of mathematic

B．tell parents to pay more attention to the guidance of teachers in the matte

C．help ensure that every child' s capacities are fully developed when leaving schoo

D．urge the use of a much underused resource-the paren

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【命题目的】此题考查考生归纳中心思想的能力。
【解题要点】A项“改进数学教育”显然与中心无关，在第四段中提到 “在家里培养孩子学习数学能力”只是举的一个例子，为了说明如何以一种更好的方式在家庭中教育孩子，所以不选A项。B、C两项都很牵强附会，没涉及文章中心。第一段和第四段都强调家长的重大影响，“他们是教育孩子的同盟军”，作者目的正是“呼吁学校充分开发潜在的人力资源——家长”。

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