富含嘌呤的食物是（）。

A.牛奶

B.鸡蛋

C.动物内脏

D.黄瓜

E.米饭

What he has done is really  _____ . Now his parents' are _____ him .[ ]

A. disappointing; disappointed at           

B. disappointed; disappointed about

C. disappointed; disappointing by          

D. disappointing; disappointed with