【单选题】12、Scientists could see many things that most people would ( ) to see.A. fellB. failC. fallD. fill

本题考查对形似单词词义的辨析。解题的关键在于理解每个选项单词的含义，并结合句子的语境来判断哪个单词能使句子逻辑通顺。

• A选项“fell”：“fell”是“fall”的过去式，“fall”常见的意思是“落下；跌倒” ，例如 “Leaves fall in autumn.（秋天树叶落下。）” ，将其代入句子 “Scientists could see many things that most people would fell to see.” ，句子逻辑不通，所以A选项不符合。
• B选项“fail”：“fail”有“未能；失败”的意思，“fail to do sth.” 是固定用法，表示“未能做某事”。把 “fail” 代入句子 “Scientists could see many things that most people would fail to see.” ，句子意思为“科学家们能看到很多大多数人看不到的东西”，逻辑合理，所以B选项正确。
• C选项“fall”：如前面所述，“fall”意为“落下；跌倒”，代入句子 “Scientists could see many things that most people would fall to see.” ，句子无法表达合理的意思，所以C选项不正确。
• D选项“fill”：“fill”的意思是“装满；填满”，常见搭配是 “fill...with...” ，例如 “Fill the bottle with water.（把瓶子装满水。）” ，代入句子 “Scientists could see many things that most people would fill to see.” ，句子逻辑混乱，所以D选项不合适。