参考答案

正确答案：D
解析：What can we infer from the passage?
根据四个选项可知本题考查相关要求或规定的细节。
文中最后提到，实习许可只在一段时期内有效，因为它只是在培训过后让你为驾驶考试做好准备(Your Learner's Permit is good for only a limited amount of time，since it is expected that you will be ready to take the test for your license after a relatively short period of instruction)。通过排除法可知正确答案选D)。