按正确顺序排列下列句子。

( ) First, make a big ball of snow.

( ) Third, make a smaller snowball than the second and put it on the top.

( ) Let's make a snowman.

( ) Then make a face and a nose on the snowman.

( ) And at last (最后), put two sticks for his arms.

( ) And then, put some little rocks for his mouth and eyes.

( ) Second, make another small snowball and put it on the big one.

中国农业银行的会计电算化要坚持（）的基本原则。

A.统一性

B.规范性

C.效益性

D.安全性