题目

下列对化学反应的认识错误的是A．会引起化学键的变化             B．会产生新的物质C．必然引起物质状态的变化      D．必然伴随着能量的变化 答案：C解析：化学反应的本质是化学键的断裂和形成，表现为有新物质生成，而化学变化中的反应物和生成物的状态在反应前后可能相同，也可能不相同，故C项错。6．Where can you go if you are a baseball fan？A．To the basketball field．B．To the baseball field．C．To the football field．17．What can you do indoors？A．Surfing．B．Play football．C．Play table tennis．18．How many swimming pools are there？A．One．B．Two．C．Three．19．When is Superstar Sports Center closed？A．On Monday morning．B．On Monday afternoon．C．On Monday evening．20．What is NOT true according to the passage？A．You can get help from the teachers there．B．All the children can get free tickets．C．There is a 400-meter playground outdoors．