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标题: GWD一道题~~~求助NN~~非常感谢！~~ [打印本页]

作者: 水色青空 时间: 2010-5-13 22:33
标题: GWD一道题~~~求助NN~~非常感谢！~~

30. GWD21-Q30:

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.

lastic 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.

在过去，在V这个地方大多数孩子在冬天玩雪橇是使用木制的雪橇有with runners and steering bars，十年前，光滑的塑料雪橇变得流行，它比木制的滑的更快但是更难驾驶和减速。觉得塑料雪橇更加危险的担心通过现在比十年前更多的孩子滑雪受伤表现。------给出造成孩子受伤的其他原因。C答案：塑料雪橇比木制雪橇可以在更多的雪地条件下使用。意味着现在的孩子有可能在更加危险的雪地条件下滑雪，而十年时不可能的，因此不是因为雪橇而是雪地条件造成的

为什么B不可以提供孩子受伤的另外一种原因？

谢谢大家帮忙！~~

作者: mousealpha 时间: 2010-5-13 23:30
我路过一下。。

我觉得。。B的情况对于wooden和plastic雪橇是相同的。。所以当雪橇更快更难控制的话。。危险性显然更大更容易受伤。。这样就支持结论说的plastic雪橇更危险了。。

楼下继续。。

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