阅读下面短文,从各题所给的选项中选出最佳答案.
One day in class, the teacher held up an apple. She stood on the teacher's desk and said. "Please smell it in the1, and …"
One girl raised 2 hand and said, "I can smell it. It is the smell of an apple."
The teacher left the desk, 3 each of the students and said, "Smell again to see if the smell of the apple is still in the air."
Half of the students4 their hands to show that they could smell it. The teacher returned to the5 of the classroom and asked again who else could smell the apple. The rest raised their hands to say yes6 one boy. The teacher came to the boy and asked. "You really can't smell the apple?"
The boy answered, "No, I can't smell it, I don't think it's a7 apple."
The teacher 8at the boy and said to the class, "He's right! It's impossible to get the apple smell from this apple."
All of the other students had been tricked. Some may have thought 9perhaps the apple didn't have the apple smell, but they didn't t dare to tell the10. They just follow the first student blindly and went along with him.