客户关系建立的主要方式中，最有效的方式是（）。
A.电话
B.网络
C.短信
D.上门拜访
参考答案：D
- I heard that Lucy went to your house to say sorry to you.
- Yes. She went to my house _______ we were having dinner.
A. while B. which C. that
“锲而舍之，朽木不折；锲而不舍，金石可镂。”这是我国古代流传下来的一句名言。请联系心理品质的锻炼，说一说你对这句名言的理解。
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