Ⅲ. 学完Lecture 2的课文后，选出每题的正确答案。（2分，共8分）Choose the appropriate answer to each of the following statements according to the passage. The author’s main purpose in this article is______ A:to define what friendship is B:to explain how to be a good friend C:how to make friends with others D:how to make friends with teenagers 答案: how to make friends with others