The work is too difficult for Mr Zhu to finish in a week. He needs _____ days. [ ]

A. more two

B. two more

C. two another

D. another more

佝偻病病因中，"添加副食过迟或不足"属于（）

A.日照不足

B.药物作用

C.生长速度快

D.围生期维生素D不足

E.食物中补充维生素D不足