已知α是第一象限角，则π-α是第______象限角．_爱下问搜题

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问题填空题

已知α是第一象限角，则π-α是第______ 象限角．

答案

∵角α是第一象限角，

∴角-α是第四象限角，

将-α逆时针旋转π得到π-α，它必在第二象限．

∴π-α的终边在第二象限

∴π-α是第二象限的角

故答案为：二．

单项选择题

(三)

Informal conversation is an important part of any business relationship, Before you start a discussion, however, make sure you understand which topics are suitable and which are considered taboos in a particular culture. Latin Americans enjoy sharing information about their local history, art, and customs. They expect questions about their family and are sure to show pictures of their children. Yon may feel free to ask similar questions of your Latin American friends. The French think of conversation as an art form, and they enjoy the value of lively discussions as well as disagreements. For them, arguments can be interesting—and they can cover pretty much or any topic—as long as they occur in a respectful and intelligent manner.
In the United States, business people like to discuss a wide range of topics, including opinions about work, family, hobbies, and politics. In Japan, China, and Korea, however, people are much more private. They do not share much about their thoughts, feelings, or emotions because they feel that doing so might take away from the harmonious business relationship they’re trying to build; Middle Easterners are also private about their personal lives and family matters. It is considered rude, for example, to ask a businessman from Saudi Arabia about his wife or children.
As general rule, it’s best not to talk about politics or religion with your business friends. This can get you into trouble, even in the United States, where people hold different views. In addition, discussing one’s salary is usually, considered unsuitable. Sports is typically a friendly subject in most parts of the world, although be careful not to criticize a national sport. Instead, be friendly and praise your host’s team.

Why are people from Asia more private in their conversation with others

A．They don’t want to talk with others much.

B．They don’t want to have their good relationship with others harmed by informal conversation.

C．They are afraid to argue with their colleagues.

D．They want to keep their feelings to themselves.

判断题

火葬用品就是人们在用火葬的方法处理和处置骨灰时使用的物品。