og12sc12题 12. Rising inventories,when unaccompanied correspondingly by increases in sales, can lead to production cutbacks that would hamper economic growth. (A) when unaccompanied correspondingly by increases in sales, can lead (B) when not accompanied by corresponding increases in sales, possibly leads (C) when they were unaccompanied by corresponding sales increases, can lead (D) if not accompanied by correspondingly increased sales, possibly leads (E) if not accompanied by corresponding increases in sales, can lead
正确选项是E 我不明白:正确答案中 can lead to production cutbacks that would hamper economic growth 时态上一个是现在一个是过去不是矛盾吗??这个句子的时态到底是什么?