51. What would be the impact of the extensive use of driverless cars?
- A. People would be driving in a more civilized way.
- B. It would save local governments a lot of money.
- C. More policemen would be patrolling the streets.
- D. Traffic regulations would be a thing of the past.
答案：B
答案句：On the other hand, imagine the cost savings for local police enforcement and town budgets without all those speeding and parking tickets.
参考译文：另一方面，想象一下，如果没有那些超速和停车罚单，当地警察执法和城镇预算能节省多少成本。
定位线索：题干“impact of the extensive use of driverless cars”→答案句取自第1段“On the other hand, imagine the cost savings for local police enforcement and town budgets”；文中“cost savings”对应选项B“save local governments a lot of money”。
解析：题干问无人驾驶汽车广泛使用的影响，答案句直接提到“cost savings for local police enforcement and town budgets”，即节省警察执法和城镇预算的开支，与选项B“save local governments a lot of money”同义。选项A“更文明的驾驶方式”在文中虽有提及但非本题答案句内容；选项C“更多警察巡逻”与原文“cost savings”相反；选项D“交通法规成为过去”无中生有。
54. What is the result of the introduction of new technologies in energy industries?
- A. Political dissatisfaction.
- B. Retraining of employees.
- C. Fossil fuel conservation.
- D. Business restructuring.
答案：A
答案句：This is similar to what's happening in the coal and oil industries, a situation that fuels much of the current political discontent in this country.
参考译文：这与煤炭和石油行业正在发生的情况类似，这种情况加剧了该国当前许多政治不满。
定位线索：题干“result of the introduction of new technologies in energy industries”→答案句取自第4段“what's happening in the coal and oil industries”；文中“fuels much of the current political discontent”对应选项A“Political dissatisfaction”。
解析：题干问能源行业引入新技术的结果，答案句明确指出煤炭和石油行业的情况“fuels much of the current political discontent”（加剧了当前的政治不满），与选项A“Political dissatisfaction”直接对应。选项B“员工再培训”是作者的建议而非结果；选项C“化石燃料保护”和选项D“业务重组”均无原文依据。