The weather in Beijing is quite different from _____ of Shanghai. [ ]

A. one

B. it

C. that

D. this

剧烈呕吐后的呕血多见于()

A．消化性溃疡

B．急性胃粘膜病

C．胆石症

D．食管贲门粘膜撕裂伤

E．慢性胃炎