题目

Year of Giving Yesterday I started the Year of Giving, my first day of a year-long journey into exploring the act of giving and the meaning of charity. I chose December 15 as the starting date, which marked three years since my mother died from heart disease. She was one of the most generous people that I have ever known. She always thought of others first and certainly serves as an inspiration to me. I had a rather busy day yesterday, ironic (具有讽刺意义的) for someone who is unemployed right now. In the morning I went to the gym, and unsuccessfully got the phone call from the2．教室喷洒过氧乙酸溶液后，室内充满过氧乙酸气味，这说明（　　）A．分子可再分B．分子在不停地运动C．分子很小D．分子间有间隔