题目

一杯水放在桌面上．若用细绳系一金属块．将它悬挂在水中时．则水对杯底的:A. 压强增大．压力不变;                 B．压强不变．压力增大;C. 压强和压力都不改变;                 D．压强和压力均增大. 答案：D5、根据所给汉语完成单词。 1．He              （抱怨）that he had been unfairly treated． 2．Would you like a              （家庭教师）to help you with math? 3．The first time he went into the room he heard a            （奇怪的）noise． 4．The children              （跟随）their parents into the room 5 minutes ago． 5．Could you tell us your               （经历）as a volunteer in that small village?