(大量生产) chewing gum since December 1869.

　　In 1869，Mexican General Antonio Lopez de Santa Anna told his idea of chicle(糖胶树胶) to Thomas Adams.Adams tried to make toys，masks，and rain boots out of chicle，but none of his products were commercially successful.Then he simply added flavor to the chicle! That was the first step in creating the world's first modern chewing gum! The first mass marketed chewing gum was called Adams New York Chewing Gum.In the 1870s，Adams & Sons sold "Sour Orange" flavored gum as an after­dinner candy.In 1871 Thomas Adams patented a machine for the manufacture of gum.However，all these kinds of gum had one big problem: they could not hold flavor.

　　The problem with holding flavor was not fixed until 1880，when William White combined sugar and corn syrup with chicle.For better taste he added peppermint extract (薄荷精)．He found out that peppermint stayed in the gum during chewing much longer than other flavors.He called his first peppermint flavored gum Yucatan gum.

　　In 1888，Thomas Adams' chewing gum，Tutti­Frutti，was the first chewing gum that was sold from a vending machine(自动贩卖机)．

　　【语篇解读】　本文介绍了"口香糖"的发明和发展历史。

　　1．Who first patented chewing gum in the United States?

　　A．John Bacon Curtis.

　　B．Amos Tyler.

　　C．William Finley Semple.

　　D．Antonio Lopez de Santa Anna.

　　B　[细节理解题。由第三段的"On July 27，1869，Amos Tyler received the first patent in the United States for chewing gum."可知，Amos Tyler最先在美国获得了口香糖专利。]

　　2．Before making chewing gum，Thomas Adams ．

　　A．knew nothing about chicle

　　B．had failed in several kinds of business

　　C．had come up with the idea of using chicle

D．had already made some popular products