问题详情

According to Prof. Snow, which of the following is CORRECT？

A．Children become bilingual in learning a second language.

B．Children have difficulties in maintaining two languages.

C．Adult second-language learners become monolingual in learning a second language.

D．Adults are more likely to achieve native-like proficiency to learn a second language.

请帮忙给出正确答案和分析，谢谢！