【正确答案】 1、B    

【答案解析】从Mary Charlene所说的第二、三句话Young children are often placed in a completely foreign language environment by their parents—leaving them with little choice but to learn the new language． Peer pressure is pushing them to learn．和第四句话Adults on the other hand，almost never completely separate themselves from the native culture可以总结她的观点：孩子们和成年人对于来自周围环境的压力所表现出来的不同态度，导致他们在外语学习方面产生两种不同的结果。