Read the following passage and mark the letter A, B, C, or D on your a

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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 28 to 34.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the  correct answer to each of the questions from 28 to 34. 

Different cultures follow their own special customs when a child's baby teeth fall out. In Korea,  for example, they have the custom of throwing lost teeth up on the roof of a house. According to  tradition, a magpie will come and take the tooth. Later, the magpie will return with a new tooth for  the child. In other Asian countries, such as Japan and Vietnam, children follow a similar tradition of  throwing their lost teeth onto the roofs of houses. 

Birds aren't the only animals thought to take lost teeth. In Mexico and Spain, tradition says a  mouse takes a lost tooth and leaves some money. However, in Mongolia, dogs are responsible for  taking teeth away. Dogs are highly respected in Mongolian culture and are considered guardian  angels of the people. Tradition says that the new tooth will grow good and strong if the baby tooth  is fed to a guardian angel. Accordingly, parents in Mongolia will put their child's lost tooth in a piece  of meat and feed it to a dog. 

The idea of giving lost teeth to an angel or fairy is also a tradition in the West. Many children  in Western countries count on the Tooth Fairy to leave money or presents in exchange for a tooth.  The exact origins of the Tooth Fairy are a mystery, although the story probably began in England  or Ireland centuries ago. According to tradition, a child puts a lost tooth under his or her pillow  before going to bed. In the wee hours, while the child is sleeping, the Tooth Fairy takes the tooth  and leaves something else under the pillow. In France, the Tooth Fairy leaves a small gift. In the  United States, however, the Tooth Fairy usually leaves money. These days, the rate is $1 to $5 per  tooth, adding up to a lot of money from the Tooth Fairy! 

(Source: Reading Challenge 2 by Casey Malarcher & Andrea Janzen)

What is the passage mainly about? 

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