第13题: [单项选择]Laws recently introduced in some states have ______. A. Reduced the number of convictions B. Resulted in fewer serious accidents C. Prevented bars from serving drunken customers D. Specified the amount drivers can drink 参考答案:B 答案解析:细节题。由第五段第1行可以看出新的法律已经使较少的事故发生。