题目

 He seems to be  a(n) _____ person. He always has a lot of things to do and he never feels tired. A. smart         B. helpful            C. energetic      D. excellent 答案：C连线 将下列的物质与相应字母的缺乏症填写在括号里（共5分）A 维生素A a坏血病 B 维生素B1 b夜盲症 C 维生素C c骨质疏松症 D 含钙无机盐 d生长发育不良，味觉发生障碍E 含锌无机盐 e神经炎，消化不良