单词题托福Iron production was revolutionized in the early eighte

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单词题托福
Iron production was revolutionized in the early eighteenthcentury when coke was first used instead of charcoal for refining iron ore.
The word "revolutionized" is closest in meaning to which offollowing?
(A) quickly started
(B) gradually opened
(C) dramatically changed
(D) carefully examined
答案是什么,为什么?

C
A 很快开始
B 逐渐打开
C 急剧变化
D 小心检测
revolutionized - 变革,意思是急剧的变化
这些单词题很简单,你查查字典就会了啊
再问：但是这题的答案是B,我做的时候选的也是C，但是答案是B，所以就疑惑了
再答：从意思上看，18世纪人们学会用焦炭代替木炭炼铁后生铁产量提高，用gradually opened 是符合逻辑的。但是原句是"revolutionized"，变革，革命。什么是革命？是短时间内彻底颠覆传统，是一种急剧的变化，个人认为答案或许有误。当然，仅供参考。

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单词题 托福Iron production was revolutionized in the early eighte

单词题托福Iron production was revolutionized in the early eighte