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?
C. Plastic sleds can be used in a much wider variety of snow conditions than
wooden sleds can.
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.
我選E 答案是C
但我想了很久還是不知道位何C可以weaken
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