题目

完形填空Thefirst time I saw Suzy Khan, I knew I had to help her. She was really small forher age of 12. The boys in my class often 1 about her and laughed their heads off. Shewould open a book, 2 to read, with tears dropping on the open page.Oneday, when I went into the classroom, I saw that Suzy had 3 her geography book to a picture of a train,and in her notebook, she had made a(n) 4 copy. Iwas surprised and thought that she could do something in the coming 5 show. So, I took her to see the art teacher,Miss Parker, and showed her what Suzy had 6.Why, it's wonderful, said Miss Parker, who 下图是某煤发电厂处理废气的装置示意图。下列说法错误的是(    )A．使用此废气处理装置可减少酸雨的形成B．装置内发生的反应有化合、分解、置换和氧化还原反应C．整个过程的反应可表示为2SO2＋2CaCO3＋O2=2CaSO4＋2CO2D．可用酸性高锰酸钾溶液检验废气处理是否达标