抢救记录要在（）内补齐.
A、2小时
B、3小时
C、5小时
D、6小时
E、4小时
参考答案：D
下图所示的为哪一种ELISA技术的反应原理示意图
（）
A.双抗体夹心法
B.双位点一步法
C.间接法测抗体
D.竞争法
E.捕获法
35．—Why didn't you ask him for help?
—______, but he was working on his computer．
A．I had wanted
B．I had wanted to
C．It's hard to say
D．Don't mention it
（）