A. improved efficiency in converting harvested trees into wood products may reduce harvest rates, it will stimulate demand by increasing supply and lowering prices, thereby boosting consumption. thereby boosting consumption 是结果状语从句,逻辑主语不一定要是主语,可以是前面整个句子造成的结果 it 指代 improved efficiency 所以 这个的逻辑意思是 improved efficiency-->increasing supply and lowering prices----->stimulate demand----> boost consumption 是合理的,我想原文中要表达的意思就是 需求被刺激 推动 消费吧
B. improved efficiency in converting harvested trees into wood products may reduce harvest rates, demand will be stimulated because of increasing supply and lowering prices, which boost consumption 首先这里 因为 boost是单数形式 所以不能指代demand 只能指代 increasing supply and lowering prices, 那么逻辑意思就会变成很奇怪 变成平行的 increasing supply and lowering prices--->demand will be stimulated 所以我觉得 A更好,虽然答案里是B 同时increasing supply and lowering prices---->boost consumption 很别扭的表达 awkward 而且意思也不对
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