题目

How is Eric going to the Stone Park?A.By car. B.By bus. C.By taxi. 答案：【答案】B【解析】【原文】W: Are we driving to the Stone Park, Eric?M: No, it’s hard to find a place to park there. So we are going to take a bus.下列各组酸中，酸性依次增强的是（　　）A．HClO、HClO3、HClO4B．HNO3、H3PO4、H2SO4C．HI、HCl、H2SD．H2CO3、H2SiO3、H3PO4