[SC. ] PP1-SC-97 which跳躍修飾問題
97. (29753-!-item-!-188;#058&003991)
Industrialization and modern methods of insect control have improved the
standard of living around the globe while at the same time they have
introduced some 100,000 dangerous chemical pollutants, having gone virtually
unregulated since they were developed more than 50 years ago.
(B) while at the same time introducing some 100,000 dangerous chemical
pollutants that have
(C) while they have introduced some 100,000 dangerous chemical pollutants at
the same time, which have
正確答案為(B)
想請問C選項的,which是否能跳躍(at the same time)修飾首詞pollutants?
謝謝！
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