Question

3.  (2015 江苏南京玄武区一模，9) To live on Mars,you need to wear boots which to prevent you from floating off into space.

   A. design        B. designed

   C. are designing   D. are designed 

Answer 1

3. D句意:要想生活在火星上，你需要穿着那种被设计成防止你飘进 太空的靴子。本题考查动词的语态。根据句意可知靴子是被设计， 应用被动语态。故选D项。