A. manufacture B. saw C. travels D. relieving E.extraction F.condensed G.journeys H. handled I. purified J. subjected to K. treated L. as M. when N. refreshing O.assigned The ancient Aztecs venerated the cacao tree and used its beans as a form of currency. They ____(1) the tree as a source of strength and wealth and _____ (2) their god Quetzalcoatl its guardian. The Aztecs discovered that by crushing the beans into a paste and adding spices, they could make a ____(3) and nourishing drink. This drink would have been very bitter, unlike our chocolate drinks today. 16 century European explorers brought the drink back from their ____ (4), added sweeter flavorings, and soon it was popular as an expensive luxury. In the 1800s, solid chocolate became popular, with the invention of molding processes. Mechanical grinders crushed cocoa beans to a fine powder that could be heated and poured into molds, forming shaped ____(5) it cooled. Dutchman Coenrad Van Houten perfected the _____(6) of cocoa butter coca beans in 1825. The beans crushed to a paste, which is ____(7) very high pressure, forming chocolate liquor and cocoa butter. The extracted butter is smoothed and ____(8) to remove any odors. In the 1880s, Rudolphe Lindt of Switzerland started adding extra cocoa butter during chocolate manufacture, to make it smoother and glossier. Cocoa butter melts at around 97 0 F, which is human body temperature. That ’ s why chocolate melts in the moth. In 1875, Swiss Daniel Peter perfected the _____(9) of milk chocolate, which is sweeter and smoother than dark chocolate. Nestle ’ s recently-invented _____(10) milk was easy to mix with cocoa paste, unlike liquid milk. Cadbury ’ s “ Dairy Milk ” , first developed in 1905, is the UK ’ s most popular chocolate bar. Milk chocolate is now the world ’ s best-selling variety.