某有机物C3H6O2的核磁共振氢谱中有两个共振峰，面积比为1︰1，该有机物的结构简式是 （ ）
答案：B
The director couldn't figure out _______ made his assistant spend so much time in doing the survey. [ ]
A. what it was that
B. why it was that
C. how that was
D. what was it
进口货物的完税价格包括货物的货价、货物运抵中国境内输入地点起卸前的运输及其相关费用、保险费。( )
