【单选题】Today a large coal-fired power plant can give out in a single year as much poisonous gas as was blown out by the May 18,1980 outbreak of Mount St. Helens, ______ some. 400,000 ton.
【简答题】根据句意及首字母或汉语提示完成单词。 1. There are so many things here that I can't decide which one to c _____. 2. My English teacher often e _____ us to study English hard. 3. Study hard, and you will make _____ (进步...