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我会吃四块奶酪。如上图所示当吃第一块时得到边际效用是70，总效用为70效用达到最大。但吃到第二块边际效用只有10总效用为80，而且随着我继续吃奶酪的同时边际效用也在不断递减。吃到第五块时边际效用为0，总效用为88与第四块的总效用相等。总效用达到饱和，无论怎样增加消费量都不会使满足感上升反而感觉厌恶。如图当吃到第六块边际效用为负值，总效用比饱和时的88减少了2点。所以我会选择吃四块奶酪。

Answer 1

我会吃四块奶酪。如上图所示当吃第一块时得到边际效用是70，总效用为70效用达到最大。但吃到第二块边际效用只有10总效用为80，而且随着我继续吃奶酪的同时边际效用也在不断递减。吃到第五块时边际效用为0，总效用为88与第四块的总效用相等。总效用达到饱和，无论怎样增加消费量都不会使满足感上升反而感觉厌恶。如图当吃到第六块边际效用为负值，总效用比饱和时的88减少了2点。所以我会选择吃四块奶酪。
I shall eat 4 pieces of cheese, as the figure above shown, when I eat the first one, the marginal effectiveness that I will gain is 70 and when the total effectiveness is at 70, the maximum effectiveness is reached. But when I eat my second one, the marginal effectiveness will be only 10, so the total effectiveness is 80 and if I carry on eating the cheese, the marginal effectivenes will also carry on to decrease. when I eat my 5th one, the marginal effectiveness will drop to 0, the total effectiveness will be 88 same as when I was eating the 4th one, the total effectiveness is saturated. You won't be able to increase your satisfaction, no matter how you increase your consumption, but on the contrary, you will only make yourself sick! As the figure above shown, the marginal effectiveness will be negative when you eat your 6th piece, the total effectiveness will be 2 points lower than the 88. Therefore I will choose to eat only 4 piece of cheese.