演绎推理“因为f′（x₀）=0时，x₀是f（x）的极值点．而对于函数f（x）=x³，f′（0）=0．所以0是函数f（x）=x³的极值点．”所得结论错误的原因是（　　）

阅读短文，判断正(T)误(F).
    I was in town yesterday. I decided to stop at the bank to see Jane. I thought she might have time to go for lunch with me.
When I got to the bank, they told me she had just been out. I asked them if she would be back by 10:30 or 11:45, and they told me “Yes”. I had some time, so I decided to wait for her. I walked over to take a seat by the window. I watched everyone coming in. It was 12:30, and I was sure she couldn't come back until after lunch. I got up, and as I started to walk to the door, someone called my name. I turned around and was surprised to find it was Jane. She said she had not left her office all the morning.
____ Yesterday I was in a city.
____ I wanted to have lunch with Jane.
____ Jane was in her office all the morning.
____ I didn’t wait Jane any more.
____ In fact, Jane’s workmates made a mistake.

以下做法与“食品安全”要求不符的是（　　）