It's a fine day. The Black（布莱克一家）are busy today. Tony and Gogo are going to the beach. Jenny is going to the park with her friends. Mrs. Black is going to the shopping mall. She is going to buy some milk and vegetables. Is Mr. Black going to the shopping mall, too? No, he isn't. He's going to stay at home. Look! He is reading the newspapers（报纸）.

正常人体内，下列物质或过程不会在内环境中出现的是(　　)
①葡萄糖 　  ②血红蛋白 　   ③葡萄糖分解产生丙酮酸和还原氢      ④二氧化碳　
⑤蛋白质分解成氨基酸   　⑥甲状腺激素的运输     ⑦乙酰胆碱的产生 　  ⑧尿素