2. 外语
  3. Since the 1930’s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly

Since the 1930’s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly

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问题 Since the 1930’s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly that the air passing over them would not become turbulent.
选项 A、wings, shaped so smoothly and perfectly
B、wings, wings so smooth and so perfectly shaped
C、wings that are shaped so smooth and perfect
D、wings, shaped in such a smooth and perfect manner
E、wings,wings having been shaped so smoothly and perfectly so
答案B
解析 C中的are shaped所反映的时态与would not不一致，注意本句中，逗号后的内容是虚拟语气(仅表示一种愿望)；E中：用现在分词完成体作修饰词不妥。在公理中曾提到havingbeen done不够简洁；A、B、D之间的比较在于：是用副词形式smoothly修饰shaped，还是用形容词形式smooth修饰wings。smoothly作为副词解时，可译为：顺利地，平稳地(如movingsmoothly)，因此smoothly与shaped搭配不妥，而应该是用smooth修饰wings，这正好呼应了前面的frictionless，由此排除A、D。
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