男性，30岁，患消化性溃疡2年余，经常反复发作，曾用过多种药物治疗。下列用过的治疗药物中，属于保护胃粘膜的药物是

A．法莫替丁

B．奥美拉唑

C．氢氧化铝

D．西沙比利

E．米索前列醇

The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.

A．where

B．when

C．what

D．which