题目：
What does the speaker mean a. He learned a lot of experience from observing the street life. b. He learned how to take precautions against the criminals. c. He learned to be smart by the life in New York. d. He was confident as he walked through Times Square to his office every day.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A, C
