题目

Holiday Inns and Mc Donald’s, both saw unmatched growth in the 1960s. Their growth opened another direct business operation—franchising(特许经营).     These operations have the same general pattern. The franchisor, the parent company, first establishes a successful retail(零售)business. As it expands, it sees a profit potential in offering others the right to open similar business under its name. The parent company’s methods and means of identification with consumers are included in this right. The parent company supplies skill, and may build and rent stores to franchisees. For 下列计算正确的是 A、2a2·2a2=4a2 B、2x2·2x3=2x5 C、x2·y2=(xy)4 D、(-3x)2=9x2