题目

Mr. Gong was angry when he found out that his 12-year-old child had spent 13, 272 yuan from March 17 to 21 when playing video games on his mobile phone. Gong made a complaint and required the video game company to return all the money. But “it’s up in the air so far.” Gong told Workers’ Daily.This is not a single case in which children have paid a great deal of money to play online games. The Guangdong Consumer Council ( 消费者委员会) has received more than 10,000 similar complaints from local parents in the first three months of this year.Because of the increasing number of simi小宇探究某种有机化合物的组成，他取该物质3.2g在足量的氧气里充分燃烧，生成8.8g二氧化碳和7.2g水．则该有机物中（　　）A．一定含有碳、氢两种元素，可能含有氧元素B．一定含碳、氢、氧三种元素C．一定只含有碳、氢两种元素，不含氧元素D．无法确定