单选题 .  Egyptian wine has an extensive history within the history of Egyptian civilization. Grapes were not     21    to the landscape of Egypt, rather the vines themselves are     22    to have been imported from the Phoenicians,     23    the actual origins remain in     24    .     25    is known, is that by the third millennium BC, Egyptian kings of the first     26    had extensive wine cellars, and wine was used extensively in the temple ceremonies. The main     27    of wine in Egypt took place between the king, nobles, and the priests in temple ceremonies and is     28    by numerous painted reliefs, and other     29    evidence. Later,     30    , the viticulture (or wine making) ceased to     31    exclusively ceremonial purposes, the Egyptians began to experiment with simple structures for their vines to train on,     32    found a way to train their vines so they were easy low     33    bushes, and found ways for the soil to     34    more moisture for the vines. Egyptian wine making experiments included the use of different wine presses, adding heat to the must (the grape juice ready for fermentation)     35    make the wine sweet, and differences in vat types and materials. The     36    finished product of wine was poured through a cloth filter, and then into earthenware jars,     37    they would be sealed with natural tar and left to     38    . The Egyptians kept accurate records of their vintages, and     39    of their wines, each jar of wine was dearly     40    with its own vintage, and quality.21.