{"answers": "D", "options": ["m : i don ' mind ems is slower than others since $ 7.65 is a good price .", "m : i ca n't believe i have to pay $ 50.30 only for a letter to beijing .", "m : $ 15.30 is acceptable since it will arrive new york the next day .", "m : ok , $ 15.30 . where should i get regestered ? i want to send it now ."], "article": "m : i 'd like this letter to go by ems . what 's the rate ? f : $ 7.65 for up to 2 pounds . m : thank you . i hear the ems is the next day service . is that true ? f : well , it 's true within america , but now you are in beijing . the letter has to go through customs and get registered there . anyway , it 's faster and safer than ordinary mail . m : then how long will it take to get to new york ? f : it depends . usually 3 to 5 days . m : i see . how much does that come to ? f : that 'll be $ 15.30 .", "id": "train_3288"}