[简答题]Questions 1-9 Color in textiles is produced by dyeing, by printing, or by painting. Until thenineteenth century, all dyes were derived from vegetable or, more rarely, animalor mineral sources, Since madder plants could be grown practically everywhere, the roots of some species of the madder plant family were used from the earliest period to produce a wholerange of reds. Red animal dyes, derived! from certain species of scale insects, were alsohighly valued from ancient times through the Middle Ages. Blues were obtained fromindigo, which was widely .cultivated in India and exported from there, and from woad,a plant common in Europe and also used in the Near East from the beginning of the Christian era. Before the first, nonfading "solid" green was invented in the earlynineteenth century, greens were achieved by the overdyeing or overprinting of yellowand blue. However, yellow dyes± whether from weld or some other plant source suchas saffron or turmeric, invariably fade or disappear.
A. A．Animals
B． Minerals
C．Plants
D．Chemicals

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