在美国，5～17岁孩子中有10%～15%的人有这样那样的学习上的障碍。早期的分析及干预是非常重要的。因为—些特别的训练手段能帮助他们克服困难并在学业中成功。

3G mobile phone adopts the latest third generation wireless technology. 3G offers cell phone users high speed mobile internet access.

In the United States, from 10 to 15 percent of all children between the ages of 5 and 17 have one or more learning disabilities. Early diagnosis and treatment are important because specialized teaching techniques can help many of these students overcome their disability and succeed in school.