Some people are afraid of starting a casual(随意的) conversation with a stranger because of a fear of not having anything interesting to say. Fear of refused is also a1for keeping silent. Small talk in a conversation can 2 as a way of warming up and getting to3each other. Most people, no matter 4 successful they are at work, will find the process of 5 small talk uncomfortable, even meaningless.6 , you will have a pretty small world 7 you refuse to let others in. Starting off with a casual comment or question will make others 8, and even just greeting them with a simple “hello” will often be enough.

    Once you have made the first 9 , there is no turning back. You need to keep things 10  before you can politely say goodbye. Think about what you would like to 11 with a new friend and that is what you can ask the other person about. Work, family, hobbies or interests are some12_points of discussion. To keep the ball rolling, you can show that you are really 13in what they are saying. Once you find common 14 of interest, things will certainly15 off from there.

    Small talk can16out to be a pleasant experience. The conversation 17 be brief and casual without turning into a long and boring discussion. Do not let yourself 18 the conversation. Stop worrying about how big of a fool you may appear to be. You may19 find out later on that you have the “20” of getting people to open up to you by engaging them in small talk.

如图，在$y=\frac{k}{x}$(k>0)的图象上有两点A（1，4），B（4，1），过这两点分别向x轴引垂线交x轴于C，D两点．连接OA，OB，AC与BO相交与点E,记△OAE，梯形EBDC的面积分别为S₁，S₂，则有