下列有关人脑功能的叙述错误的是（　　）

①将新鲜袋装牛奶煮沸，冷却至常温，加入适量酸奶，搅拌均匀；

②将5个大小相同的玻璃杯消毒、编号，倒满混合后的牛奶；

③将玻璃杯密封，置于不同温度的恒温箱中；

④一段时间后，取样检测杯中的活菌数量，记录数据．实验结果如柱形图所示：

请分析问题：

阅读理解

Sarah: What day is it today?

Mike: It's Monday.

Sarah: What do you have on Mondays?

Mike: We have maths, English, art and science.

Sarah: Do you like science?

Mike: Yes, I like art and English, too. What about you?

Sarah: Me too. Who's your science teacher?

Mike: Mr Zhang.

Sarah: What's he like?

Mike: He's old but very kind and funny. He's tall and thin.

Sarah: What do you often do on the weekend?

Mike: I often listen to music and watch TV. Sometimes I draw pictures.