I like the____(open) part of your speech most.
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The____(society) life of the village is rather dull.
You cannot move from one ____(virtuality) world to another.
I was still very ____(doubt) about the chances for success.
食品冷冻设备可以分为三大类：空气冻结冷冻设备、间接接触冷冻设备和直接接触冻结设备。其中以（）的应用最为普遍。
A. 空气冻结冷冻设备
B. 间接接触冷冻设备
C. 直接接触冻结设备
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