{"answers": "A", "options": ["f : so that is true that people should avoid sitting in front of computers for too long without walking around .", "f : so we should remember that a good chair enables people to keep their feet flat on the floor and people are doing less and less with computers .", "f : so it is true that there are not so many physical problems despite the wide use of computers .", "f : so although people are doing less and less with computers , that is true that people should avoid sitting in front of computers for too long without walking around ."], "article": "f : our guest today is dr. lia kwan . dr. kwan works with computer related injuries and problems . dr. kwan , do you see more computer-related problem these days ? m : oh , definitely yes . people are doing more and more with computers and that means more physical problems . f : so what can we do ? m : well , how you sit at the computer is very important . first , have a good chair . it should support your back well . f : ok , a good chair . m : and also your feet should be flat on the floor when you 're sitting . you should n't cross your legs . f : ok. i do n't always keep my feet flat on the floor at the computer . m : i know , it 's hard sometimes . anyway , you should n't sit too close to the screen either . f : is half a meter away enough ? m : not exactly . you should sit about an arm 's length away . f : what about the keyboard ? m : the position of arms and hands should be relaxed on the keyboard . f : that 's really helpful . another advice ? m : yes , that all about sitting . the other thing is about not sitting . you shouldn", "id": "train_2052"}