Tom saw an advertisement (广告) in a newspaper for a beautiful modern bicycle. It cost 55 pounds, so he went to the shop and asked to see one of the wonderful bicycles. The owner of the shop was very happy to show one to Tom. Tom examined it carefully, turned to the owner of the shop and said, "There isn’t a lamp on this bicycle, but there was one on the bicycle in your advertisement." "Yes, sir, "answered the man, "but the lamp isn’t included (包括) in the price of the bicycle. " "Not included in the price of the bicycle" Tom said angrily. "But that’s not honest. If the lamp is in the advertisement, it should be included in the price. " "Well, sir, "answered the shop owner coldly, "there is also a girl on the bicycle in the advertisement, but we can not give you a girl with the bicycle, either. \ Tom thought it was ______ for the shop owner to sell the bike without a lamp while there was one in the advertisement.