酸碱指示剂_________________________________________ 。
像石蕊这种遇到酸或碱溶液时能发生特定的颜色变化的物质
—How did you find the fashion show?
—_______________.
A．A friend of mine showed me the way
B．It was fascinating
C．The designer invited me
D．By taking a No.11 bus
既可减少胃酸分泌又具有抗幽门螺杆菌作用的药物
A．多潘立酮B．米索前列醇C．奥美拉唑D．硫酸镁E．酚酞
