The Origin of Birthday Cake
The words for"cake"and "bread"were practically (practical) the same in early Europe. The only 1_______________(differ)was that cakes were sweet. In the 15th century,2_______________(baker)came up with the idea of 3_______________(sell) cakes for people's birthdays and their weddings. Since the cakes were 4_______________(usual) used for the birthdays of young children, these celebrations were 5_______________(refer) to as children's festival. During this period,people began to put new ingredients（成分） into cakes to make them 6_______________（sweet） and less bread-like.
During the 17th century，birthday cakes were a luxury（奢侈品）. Only the very 7_______________(wealth) could afford them. During the 8_______________(Industry)Revolution, materials and tools became more advanced and more 9_______________(easy) acquired.As a result, the price of birthday cakes became 10_______________(accept) to the masses.
