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. (B)
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.
答案是B，我选C.记得好像做过，找不到了，哪位帮着看看？谢谢 | 
