养蜂人将蜂箱放在场头，蜜蜂在附近采集花粉。后养牛人将牛拴在离蜂箱5米远处，不久牛被蜜
题型：单项选择题
问题：
养蜂人将蜂箱放在场头，蜜蜂在附近采集花粉。后养牛人将牛拴在离蜂箱5米远处，不久牛被蜜蜂蜇死。该案中关于过错的认定，正确的是( )。
A．养蜂人存在过错
B．养蜂人过错大，养牛人过错小
C．养牛人存在过错
D．养牛人过错大，养蜂人过错小
题型：单项选择题
Questions 9—10 are based on the following graph.
Which of the following, if tree, most helps to explain why cigarette purchases in Civenia declined more slowly after the completion of the television antismoking advertising campaign than they did before the campaign began
