请教GWD21-Q30

bdx2010

GWD21-Q30:（答案是C，我选了D，请NN来给看看~~非常感谢）

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.

美小波

帮你顶！！我也有问题的~~

duducrystal

up

阿彻

GWD21-Q30:（答案是C，我选了D，请NN来给看看~~非常感谢）

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.他因

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.

-- by 会员 bdx2010 (2009/8/19 20:36:00)

其实我这题也有问题~我选的是B。作为他因削弱~私以为B比C要好~c只是说使用的范围变大了~但是不能够说明事故率（我认为事故率越高越危险）有没有变化~也就不能说明后来的比之前的安全~而B就是说明了受伤由别的原因导致的~是他因
希望有nn能回答下我的疑问~谢谢

超超琪琪格

支持B

candyb110

这题选c
解题的关键是找出woodensled 和plastic sled 的差异点
不管是b, 还是d 都是存在于两种sled 的情况中， 不能削弱
而c 说的是plastic的用途比较广，那自然其发生危险的概率就高，因为其使用次数变多了，而不是因为其难以control 的原因