热能平衡主要是指蛋白质、脂肪和碳水化合物之间的（）平衡。
A、摄入量
B、能量密度
C、营养
D、供热
参考答案：D
所有偶数的公因数是2。[ ]
_______ has donated much money to the charity .
A．Hers friend
B．A friend of her
C．Some of her friends
D．A friend of hers
