21.則減少1公斤的體重約需消耗多少大卡的熱量?
(A)9,000
(B)7,700
(C)6,700
(D)4,500
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統計: A(10), B(848), C(18), D(15), E(0) #3284520
統計: A(10), B(848), C(18), D(15), E(0) #3284520