题目

Mr. Jenkins liked all kinds of delicious food. As an important officer, he was often asked to dinner. The shopkeepers tried their best to fawn on him. They knew it was good for their business. Now the officer got fatter and fatter. He could hardly go upstairs at home and had to sleep downstairs. He often felt tired if he walked or did some housework. He was worried about it and had to go to a doctor.“Stop eating much fat(脂肪) and sugar, Mr. Jenkins,” said the doctor.“Or it will be worse for your health!” It was difficult for the officer to do it. He wouldn't do as the doctor sai科学研究发现:金星大气层的成分之一是三氧化二碳(C2O3),实验证明三氧化二碳的性质与一氧化碳相似。下列关于三氧化二碳的说法中,不正确的是(   )A.C2O3中碳的化合价为+3价B.C2O3在O2中充分燃烧的产物是CO2C.C2O3能使澄清的石灰水变浑浊D.C2O3在一定条件下能还原氧化铁
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