At the time of the earthquake Jeff was still in his office. He ________ to finish a project before he left for the day.

A．has tried

B．had tried

C．has been trying

D．had been trying

女,30岁，1年来乏力，易疲倦，腰部不适，有时下肢浮肿，未检查。2个月来加重，伴纳差，血压增高为150/100inmHg,下肢轻度浮肿。尿蛋白（+)，沉渣EBC5-10/HP,偶见颗粒管型，血化验Hb90g/1，血肌酐400ug/l。最可能的诊断是

A．慢性肾盂肾炎

B．慢性肾小球肾炎

C．肾病这孩子

D．狼疮肾炎

E．急性肾炎