回复 27# 的帖子
test2 的第7题, 是improves the palyer's ratio of beta to theta waves.因为是比率，所以不一定提高theta就可以提高car's maximum speed。回复 32# 的帖子
因为H段说到although the stonefly may have evovled to its present form in a progressive direction form primitive swimming insects.但仍可能是its evolution was digressive.主要就是progressive跟digressive是key words. 所以是backward 跟forward 谢谢楼主，请问楼主知道全套题在哪里能下吗？页:
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