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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 sldes 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 the number of children injuried while sleding 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 sleds E.Because the traditional wooden sled can carry more than one rider, an accident involving a wooden sled can result in several children being injuried --------------------------------------------------- 我选E，我认为是他因式削弱。我一个朋友选B，但我认为B是support的。所以请大家帮忙解答。 | 
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发表于 2007-7-5 21:42:00
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