年长儿每日由碳水化合物所提供能量应占总需能量的()
A.70%~75%
B.30%~35%
C.60%
D.45%
E.30%
参考答案:C
You are tired, father. _______ have a rest? [ ]
A. Let's
B. Why
C. Why not
D. Why not to
大气以下面四种形式储存能量()、()、()和()。