比较RIA和IRMA的说法错误的是（）。

A.RIA所用抗体为多克隆性，对抗体亲和力的要求高，用量少

B.IRMA对抗体亲和力的要求不及RIA，但用量大

C.RIA可以测定大小分子抗原

D.IRMA反应易受交叉反应物的干扰，测定特异性不及RIA

E.IRMA只能测定至少有两个抗原决定簇的抗原

I moved to a small town and changed my job years ago. I don’t make        .

A．money as much as I used to

B．money as much as I was used to

C．as much money as I used to

D．as much money as I was used to