【正确答案】3G手机采用最新的第三代无线技术，为手机用户提供高速的因特网接入技术服务。

【答案解析】[解析] 3G mobile phone adopts the latest third generation wireless technology. 3G offers cell phone users high speed mobile internet access.

【正确答案】随着社会变得越来越先进，情况越来越复杂，教育对每个社会成员的生活及社会本身的发展起着日益重要的作用。

【答案解析】[解析] As society becomes more and more advanced and complicated, education plays a more and more important role in the life of individual members of society and in the development of society itself.

【正确答案】锻炼是减少心脏病和呼吸系统疾病的最有效的方法，同时对身体健康也起到相应的作用。锻炼越多，对身体越好。但即使是一般的运动量也有助于减少死亡的威胁。

【答案解析】[解析] Exercise appears to be most effective in reducing risk of death from heart disease or respiratory problems, but it also has an effect on other health conditions. The more exercise, the better, but even moderate exercise lowers death risk.

【正确答案】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。

【答案解析】[解析] 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.

【正确答案】人们一直以来渴望有一种世界通行的语言。这种语言可以促进各国之间更好地相互了解，更好地相互关心。一种世界通行的语言同时也能更好地加强各国之间的文化及经济联系。

【答案解析】[解析] People have long been interested in having one language that could be spoken throughout the world. Such a language would help promote understanding and better feeling among nations. A universal language also would increase cultural and economic ties among various countries.