Question

Before traveling in space, you must know what it might feel like_____in an imaginary environment.  

  A. to travel     B. traveling     C. to be traveling     D. travel

Answer 1

A

解析:

本题易受到feel like doing sth的影响而误选B, 此处feel like的意思为 “感觉象什么”, it 为形式主语,真正的主语为不定式短语。句意：太空旅行前，你必须知道在模拟环境下行走时的感觉。