gwd小孩雪橇的cr到底选什么求助大牛

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.

答案c感觉不对，觉得是B

我選C，

題目給說

因為～塑膠的比較多人受傷；所以～比較危險

現在要打斷他的脈略說他（塑膠）沒有比較危險

C剛好符合，因為塑膠的用的廣，我到哪裡都用塑膠的，比如說以前高山不能用木的，現在用塑膠的可以滑了

所以不是塑膠危險，是很多以前不能玩的環境危險

選B沒有直接反駁到!!!

歡迎討論!!!

这道题问undermine,B不可以，因为说缺少防护并没有提到是过去用木的时候还是现在用塑料的时候，字面理解是一直都缺少防护，无法undermine受伤人数增多这个evidence。

C说到塑料雪橇使用的更广泛，就解释了事故多未必代表塑料的更危险，而是由于对雪的情况要求不严格，使用更广泛，更频繁，事故发生的也会更频繁。

可以极端的想一下，以前小孩每年只有下雪当天可以玩，有了这个塑料的，一年有2个月天天都可以玩，受伤人数增加也是正常的。

此题目如果问反例削弱应该是E。

选Ｃ．

Plastic sleds can be used in a much wider variety of snow conditions than wooden sleds can.

他因削弱