题目

Speaking English is not only about using proper grammar. To use English correctly, you need to understand the culture in which it is spoken. Here are a number of important tips to remember when speaking English in the USA. *General points to remember Most Americans only speak English. While it is true that more and more Americans speak Spanish, most Americans only speak English. Americans have difficulties understanding foreign accents. Many Americans are not used to foreign accents. *Conversation tips Speak about location. Americans love to talk about location. When speak to a stranger, 若反比例函数的图象经过点（1，-2），则k的值为 ．