[语篇解读] 横过马路时，行人的意外死亡率居高不下。很多城市正在努力采取措施保证行人过马路的安全，尤其是老人和孩子。
1．Which of the following is true according to the text?
A. Among 100 pedestrian deaths there were 21 people younger than 70.
B. Old people are more likely to meet with accidents in crosswalks.
C. Traffic accidents killed more old people than young people.
D. About seven traffic accidents happened per hour.
[解析] 事实细节题。第二段第二三句告诉我们：老年人在十字路口遭遇交通事故的可能性最大。
[答案] B
