问题
单项选择题
A. It is not enough to learn a foreign language for three years.
B. It requires time and effort to master a foreign language.
C. A child can learn a foreign language better if her mother is around.
D. A child can learn a foreign language faster than an adult.
答案
参考答案：D
解析：
We can never learn a foreign language in the same way as we acquire our first, for even a three-year-old child can have thousands of hours of contact with his mother tongue.