Mrs. Green went back home hurriedly, where her two little twins were crying, _____     they were hungry.

A．said

B．saying

C．to say

D．having said

在完全相同的五张卡片上分别写上1，2，3，4，5五个数字后，装入一个不透明的口袋内搅匀。

（1）从口袋内任取一张卡片，卡片上数字是偶数的概率是______；

（2）从口袋内任取一张卡片记下数字后放回，搅匀后再从中任取一张，求两张卡片上数字和为5的概率。