问题
选择题
The most important thing _______ we should pay attention to is the first thing ________ I have said.
A．which; that
B．that; which
C．that; that
D．which; which
答案
答案：C
题目分析：考查定语从句：句意：我们应该注意的最重要的事情是我要说的第一件事。两个句子都是定语从句先行词分别是The most important thing ，the first thing 当先行词被最高级或序数词修饰的时候，定语从句用that引导，选C。