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.(a few说明不了什么问题。若是Most则可以支持---说明虽然只有少部分孩子玩塑料的但是事故率很高。) B. Very few children wear any kind of protective gear, such as helmets, while sledding.(保护措施十年前和十年后都未提及,无对比) C.  lastic sleds can be used in a much wider variety of snow conditions than wooden sleds can.(和木制的相比,塑料的应用广泛,使用的人数更多,事故数量高一点是正常现象,并不能说明塑料的更危险。因此削弱了题干引用的证据---受伤的人数多则危险,因为应用的更广泛了) D. Most sledding injuries occur when a sled collides with a tree, a rock, or, another sled.(无关) 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.(木制的可多人乘坐,万一出事则会多人受伤。并没有提及说塑料的更危险,无关选项)
我认为此题选B 因为 B.Very few children wear any kind of protective gear, such as helmets, while sledding. 指的是现在很少人注意安全设备的使用。 原来注没注意, 只能是普通级别的注意。 因为原文没有说明具体两者注意安全的程度。 没注意安全——>更多受伤比率 而C.Plastic sleds can be used in a much wider variety of snow conditions than wooden sleds can. 则说明塑料板现在使用面广。 使用面更广--X-->受伤人数多或者是受伤比率大的