In the past, most children who went sledding in the winter snow in Verland used wooden sleds with runners and steering bars. Ten years ago, smooth plastic sleds became popular; they go faster than wooden sleds but are harder to steer and slow. The concern that plastic sleds are more dangerous is clearly borne out by the fact that the number of children injured while sledding was much higher last winter than it was ten years ago.
Which of the following, if true in Verland, most seriously undermines the force of the evidence cited?
In the past, most children who went sledding in the winter snow in Verland used wooden sleds with runners and steering bars.Ten years ago, smooth plastic sleds became popular; they go faster than wooden sleds but are harder to steer and slow.The concern that plastic sleds are more dangerous is clearly borne out by the fact that the number of children injured while sledding was much higher last winter than it was ten years ago.
Which of the following, if true in Verland, most seriously undermines the force of the evidence cited?
A.A few children still use traditional wooden sleds.
B.Very few children wear any kind of protective gear, such as helmets, while sledding.
C.Plastic sleds can be used in a much wider variety of snow conditions than wooden sleds can.
D.Most sledding injuries occur when a sled collides with a tree, a rock, or, another sled.
E.Because the traditional wooden sled can carry more than one rider, an accident involving a wooden sled can result in several children being injured. 题目中数量关系有点乱啊 孩子们in the past用木头的,10 years ago用塑料的 最后又说塑料更危险是因为last winter 受伤的孩子比10years ago多。。。什么什么啊。。。 正答是C 我选的E
(C) implies the frequency of plastic sleds rises because of the much wider variety of snow; an alternative cause weakens the argument.
(E) if anything, it would strengthen the argument, since the wooden sled hurts more, but the number of children injured is caused by plastic, therefore the plastic is much more dangerous indeed.