When I was there, he was still working. He said that he (1) for the last two hours (2) that he was going to stop (3) . He added that if I had arrived ten minutes later, I (4) at home. When I mentioned that the house looked quite (5) , he said that the woman (6) usually cleaned it had been sick for some time and (7) for over a week. When I asked him (8) he did not do it himself, he said that he (9) to do so if Mrs. Jones did not come the (10) day.

[A] who [B] whom [C] which

女，50岁。因患短肠综合征，予全胃肠外营养治疗。应用一周时病人出现昏迷，但尿内无酮体。病人既往曾有空腹血糖高(11mmol/L)。

此病的预防主要是

A．开始一周内注意葡萄糖输注的浓度、速度和与胰岛素的比例

B．加强保肝

C．加强导管护理、无菌操作

D．纠正水和电解质紊乱，预防酸中毒发生