阿摩線上測驗
20 .____ The feature that chemically distinguishes protein from carbohydrate and fat is the presence of in the structure.
(A) carbon
(B) chlorine
(C) nitrogen
(D) hydrogen
(E) carboxyl groups
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統計： A(23), B(4), C(14), D(7), E(11) #1465764
統計： A(23), B(4), C(14), D(7), E(11) #1465764
