江苏境内科学家（）所著的《梦溪笔谈》被称为“中国科学史上的里程碑”。
参考答案：沈括
胃粘液屏障中主要的保护因子
A．β-受体阻滞剂B．氢氯噻嗪C．硝苯地平D．卡托普利E．哌唑嗪
__ of them ___ having a good time at the party.[ ]
A. Everyone, is
B. Everyone, are
C. Every one, is
D. Every one, are
