According to this paragraph, coffee was at first used as ______ .
(A) medicine
(B) drink
(C) food
(D) currency

currency翻譯：錢, 貨幣，通貨, 接受, 流行；流通；通用。

The first coffee plants生物體, 植物 are said to have come from the Horn of Africa非洲之角 on the shores（海、湖或大河的）濱，岸 of the Red Sea.

Originally, coffee beans were taken as a food and not as a beverage. East African tribes部落；部族 would grind變小, 碾碎，磨碎 the coffee cherries櫻桃 together, mixing the results into a paste黏性物質, 糊；麵糰；（尤指）漿糊, 醬, 堅硬的材料 with animal fat.

Rolled into little balls, the mixture was said to give warriors（尤指舊時的）武士，勇士 much-needed energy for battle.

Later, around the year AD 1000, Ethiopians埃塞俄比亚联邦民主共和国 concocted a type of wine from coffee berries, fermenting（使）發酵 the dried beans in water.

Coffee also grew naturally on the Arabian Peninsula阿拉伯半島, and it was there, during the 11th century that coffee was first developed into a hot drink.