题目

分子式为C9H10O2能与NaHCO3溶液反应放出CO2气体，且苯环上的一氯代物有两种的有机物有(不考虑立体异构) ( )。 A．3种                               B．4种C．5种                               D．6种 答案：解析 结构中含有—COOH，另外还有2个饱和碳原子，苯环一氯代物有2种的结构有四种： 答案 BAn Internet game named Happy Farm is becoming more and more popular among young office workers and students. People can work on a farm. They can also grow, water, sell and steal vegetables, flowers, fruits and so on. They can earn some e-money from their working on the farm. Then they can use it to buy more seeds, pets and even houses. Of course, all these are not true, they are only on the Internet.Why do so many young people enjoy the kind of Farm game? I think maybe some of them are afraid of facing the real world, and they have to look for fun from the Internet. Some feel lonely and want to make friends during growing vegetables on the Internet. Some have great fun stealing others' vegetables because they needn't work on their farm.Most parents and teachers are worried about these young people and students. Students spend too much time playing the game. It's bad for their health and study.根据短文内容，选择正确答案。小题1:What's the name of this kind of game?A．Happy Farm.B．Vegetables and Fruits.C．Working on a Farm.D．Computer Came.小题2:Where do the young people plant vegetables?A．On a real farm.B．In their home's garden.C．On a farm of the Internet.D．Near their houses.小题3:Why do some people enjoy the game?A．Some people feel lonely and want to make friends.B．They can get some money for living.C．They don't need to buy vegetable for lunch.D．They can learn English from the game.小题4:What's the meaning of the underlined wordA．送给B．搬运C．吃D．偷小题5:Why are parents and teachers worried about these young people and students?A．Because students spend too much time on the game.B．Because students use the game to improve their English.C．Because it costs students much money.D．Because some students don't go to school.