A:
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D:
外科手术器械和罐头食品的消毒,都要以能够杀死( )为标准。
“一滴水只有把它放在大海里,才永远不会干涸。”这句话启示我们( )
— Mum, can you play table tennis with me now?
— Sorry, I'm busy. You can ask your father _________ me.