填空题 The song "Happy Birthday to You" is sung all over the world just before the birthday boy or girl blows out the candles on the cake. It is so simple that children as young as three can sing it. The song, with its original(最初的) title "Good Morning to You", was written in 1893 by the two sisters, Mildred and Patty Smith Hill. They were the daughters of a progressive Kentucky couple, who believed in female education at a time—the mid-nineteenth century—when it was still a novel idea and who trained their two daughters to be schoolteachers. They were long involved in elementary education, and Patty, in particular. She achieved a lot as a pioneer in kindergarten education, and for several decades a major spokesman for preschool education. She taught at Columbia University"s Teachers College from 1905 to 1935, and at her retirement became one of the first women to be named an honorary(荣誉的) professor by Columbia.
A birthday cake with burning candles is also an important part at one"s birthday party. It may derive, distantly, from the ancient Greek practice of offering to Artemis, goddess of the hunt and of the moon, a round honey cake into which a candle was stuck. After German bakers invented the modern birthday cake in the Middle Ages, a similar custom was adopted for the advocate (提倡) of good spirits at birthdays. The cake, ready by morning, would be surrounded by burning candles, in a kind of protective fire circle, and they would be kept lit all day, until dessert time at the evening meal.

填空题 The passage is about 1.

填空题 In the mid-nineteenth century 1 was still a new idea.

填空题 Patty made great achievements in 1.

填空题 The cake today may come from the ancient Greek practice of offering to 1.

填空题 The candles on a birthday cake were kept burning from morning 1.