题目

—You don't so well, Betty. What's the matter with you? —I'm going to have the first round of interview tomorrow, so I'm____. A . feeling on cloud nine B . feeling hot under the collar C . feeling down in the dumps D . feeling butterflies in my stomach 答案：D下列关于硫及其化合物的说法中正确的是（ ）A．SO2和Cl2混合通入水中后可能使品红褪色B．二氧化硫的排放会导致光化学烟雾和酸雨的产生C．单质硫在自然界只以化合态存在D．浓硫酸可用来干燥SO2、CO 、Cl2、H2S 等气体