2. 外语
  3. SleepSmart is a clock that The idea of making such a clock was developed by a group of

SleepSmart is a clock that The idea of making such a clock was developed by a group of

admin2009-06-15  51
问题 SleepSmart is a clock that
The idea of making such a clock was developed by a group of
选项 A、students at Brown University.
B、teachers at Brown University.
C、sleep-deprived scientists.
D、former engineers at Axon Sleep Research Laboratories.
答案A
解析
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