{"answers": "C", "options": ["f : great , so your project will be greenhouse effect . hope you can enjoy it .", "f : great , so your project will be noise pollution . jerry will choose water pollution as his project , i think .", "f : great , so your project will be water pollution .", "f : it 's a pity that you do n't choose water pollution as your project ."], "article": "m : hi , this is the friends of the environment office , is n't it ? f : yes , it is . m : oh , good . my name is ben . i 'm doing a project at school about the environment . and my teacher said , this would be a good place to get some information . f : well , i 'd be glad to help however i can . what 's your project about , exactly ? m : well , i have n't quite figured that out , yet . that 's kind of why i 'm here , actually . f : i see , um , do you know much about the greenhouse effect ? m : yeah , but i think a lot of people are already doing that topic . f : well , how about water pollution ? m : yes , i 've heard that it is a serious problem . do you have any information about it ? f : i think we have several books over there . m : thanks a lot .", "id": "train_547"}