第8题: [单项选择]Mobility is one of the characteristics often ______ executives, and they must accustom themselves to moving quite regularly. A. demanded of B. asked for C. expected from D. called for 参考答案:A 答案解析:demand of“向……要求”,demand sth. of sb. (或from sb. )“要求某人做某事”;ask for“向……要……”;ask me for the book“向我要书”;