Professor Hawking stepped into the office I knew that there was no hope． [ ] A．U
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________ Professor Hawking stepped into the office I knew that there was no hope．
[]A．Unless
B．Now that
C．Although
D．The moment
试题答案
答案：D
提示：句意为：“霍金教授一走进办公室，我就知道没有希望了。”the moment 相当于as soon as，引导时间状语从句，意为“一……就……”。