But people who have them can be helped.

　　However, practice can really make perfect.

　　A person with a learning disability has unusual difficulty in developing these skills.

　　How can you tell if someone has a learning disability?

　　2.B考查对上下文的理解和推理判断能力。根据 They say children with learning disabilities are unintelligent or do not want to work. 说明有学习障碍的孩子不想工作，智力低下，这是因为他们接脑海中有的信息和别人不同，B选项Their brains just process information differently than other people.，符合，故选B。

　　.G考查对上下文的理解和推理判断能力。根据Experts look for a difference between how well a child does in school and the level of intelligence or ability of the child. But there is no one sign of a disorder. 可知科学家通过对孩子在学校的表现和智力水平来判断某人是否有学习障碍，G选项How can you tell if someone has a learning disability?，符合，故选G。

　　.A考查对上下文的理解和推理判断能力。根据One person may have trouble understanding mathematics. Another may have difficulty understanding what people are saying. Still another may not be able to express ideas in writing. 可知这是在说不同的人有不同的学习缺陷，A选项Different people have different kinds of learning disabilities.，符合，故选A。

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