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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 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 10 years ago.
原文:10年前,塑料的x流行,因为x很快难控制。有个观点关于塑料x更加文献可以消除了,基于事实:去年冬天受伤孩子的数量比十年前多。
问削弱 基于事实的选项。
选择E。原文隐藏了一个中间结论。10年前x有缺点,所以选择木头的了。但是情况就是去年受伤多。 |
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