著名的“木桶理论”是指：一只水桶盛水的多少，并不取决于桶壁上最高的那块木块，而取决于桶壁上最短的那块，所以它又被称为“短板效应”，那么决定木桶底部受到水的压强可能达到的最大值的是（   ）

A．木桶的底面积

B．木桶的轻重　

C．最短的一块木板

D．最长的一块木板

----What did you say just now ?

----I asked you________.

A．why you wanted to become a nurse

B．how long had you stayed in the town

C．whether was there a bank near our school

D．when will you go shopping with me