读下面的故事，弄清楚圣诞老人是谁。
Read the story below and find out who Father Christmas is.
youdao
猜猜是谁躲在椅子下面？
Peggy is on the chair.
下面这幅单词画画的是一个著名的科学家，你能猜出他是谁吗？
Below is a vocabulary picture of a famous scientist, can you guess who he is?
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