问题
选择题
It was not until all the milu deer ________ that we realized we should build a natural park to protect them.
A．died off
B．died away
C．died out
D．died down
答案
答案：C
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It was not until all the milu deer ________ that we realized we should build a natural park to protect them.
A．died off
B．died away
C．died out
D．died down
答案：C