通读全文，根据短文内容，选择正确答案填空。

    You are standing in the  1  and a voice says, "Put a little more salt to that soup." Yes, it's always nice to have   2  help you when you're cooking.   3  this voice is not from a person. Then  4 does it come from? Is it from a ghosts? No, this isn't a ghost kitchen-it's the kitchen of the future.

    Scientists are 5  to make everything in the kitchen  6  better. They are making a system (系统). It will help  7   cook a meal.

    The fridge of the smart kitchen has a scanner (扫描仪). It looks  8  the foods in the fridge. It will order more milk from the supermarket when there is no 9  in the fridge. It can do a lot of things. Even the knives and spoons will speak. For example, if your food is 10 , the knives and spoons will tell you not to eat it.

马克思说“俄国不花一文钱，不出动一兵一卒，而比任何参战国得到更多的好处”这一事件是（    ）