题目内容：
根据下面内容，回答题：Would you like to spend all evening reading a lovely story with beautiful illustrations and make$ 35,000 at the same time? Millions of people all over the world tried to do just that. Only onesucceeded. The book is called Masquerade, and was written by British painter Kit Williams. Withinits pages are clues to the location of a golden jewel, and whoever figured out the clues could find andkeep the treasure.
Some years ago, Williams was asked to write a children's book. Wanting to do something no oneelse had done before, he decided to bury a golden treasure and tell where it was in the book. He be-gan painting without a clear idea of what the story would be about, where he would bury the treasure,or even what the treasure would be. As he painted, he decided that in the story a hare, or rabbit,would travel through earth, air,fire and water to deliver a gift from the moon to the sun.
After three years, he finished the paintings and then wrote the story. The treasure became an 18- carat gold hare, adorned with precious stones, and it was made by Kit Williams himself. This beauti-ful jewel ,worth around $ 35,000, depending on gold prices, was,buried somewhere in Britain, free toanyone who could decipher the clues. Williams's book kept people of all ages amused trying to solvethe mystery of Masquerade.
The rabbit was finally found in the spring of 1982,by a 48-year-old design engineer. It was bur-
ied in a park about thirty-five miles from London.
The function of the first sentence in this passage is to __________ . A．give detail
B．sum up the story
C．capture the reader's interest
D．elaborate upon'a point
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