第28题: [单项选择]The state is trying to solve the problem by ______. A. telling people to stop using power B. loaning the utilities money to buy power C. buying power and reselling it at low prices to the utilities D. buying the utilities 参考答案:C 答案解析:第七段。加州政府决定买进一些能源,再以低价卖给公众事业以缓解能源中断。
第33题: [单项选择]右旋蔗糖是由下列哪种物质组成的糖苷 A. α-D-呋喃葡萄糖基和β-D-呋喃果糖 B. β-D-呋喃葡萄糖基和β-D-呋喃果糖 C. α-D-吡喃葡萄糖基和α-D-呋喃果糖 D. α-D-吡喃葡萄糖基和β-D-呋喃果糖 E. β-D-吡喃葡萄糖基和α-D-呋喃果糖 参考答案:D