女，25岁，孕15周，血压150/90mmHg，尿蛋白（+++）伴颗粒管型，全身水肿，BUN5.3mmol/L，10岁曾患急性肾炎，治疗后痊愈。现急诊入院。入院初步诊断，哪项可能性大（）

A.妊娠合并慢性肾炎

B.妊高征合并慢性肾炎

C.妊娠合并慢性高血压

D.重度妊高征

E.妊高征合并慢性高血压

My uncle from Hong Kong has changed so much that I could hardly ________ him at the airport. [ ]

A. understand        

B. realize

C. know          

D. recognize