题目

如图所示的正方体，用一个平面截去它的一个角，则截面不可能是（     ） A．锐角三角形            B．等腰三角形   C．等腰直角三角形        D．等边三角形 答案：D阅读下文并回答问题。 People eat different things in different parts of the world. In the south of China people eat rice every day. Sometimes they eat it two or three times a day, for breakfast, lunch or dinner. They usually eat it with fish, meat and vegetables. In Africa, maize(玉米) is the most important food. People there make maize into flour(面粉). From this flour they make different kinds of bread and cakes. In western(西方) countries, such as in Britain, and in the USA, the most important food is bread and potatoes. People there usually make bread from wheat flour. They cook potatoes in different ways. In England the most popular food is fish and chips. They eat it at their workplace, in the park or even on the road. People call it “take-away” food. 66. What do people in the south of China eat every day?                                              67. Do the people in Africa make bread and cakes from maize flour?                                              68. What is the most important food in western countries?