题目内容
The color we seen by the eye is the color of complementary light after the pigment absorbs light waves. ( )
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The root of the tongue is sensitive to bitterness.( )
Which of the following pigments is not a synthetic pigment? ( )
Which of the following olfactory substances does not belong to terpenes? ( )
Which of the following characteristic odors is formed through chemical reactions without enzymes? ( )
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