下列关于瑞特染色的叙述，正确的是（）。

A.瑞特染料中含酸性染料亚甲蓝和碱性染料伊红

B.染色时间不受室温影响

C.染液配制后可立即使用

D.瑞特染色的最适pH值为6～7

E.缓冲液pH值偏高，血涂片颜色会偏蓝

The speaker needs more money because he wants to buy a car and a house.