一般基础代谢约占总能量消耗的______。
A.5%~10%
B.10%~20%
C.20%~30%
D.60%~70%
参考答案:D
The young man walked _____ the gate with his uncle. [ ]
A. through
B. over
C. between
D. under
生活中处处有物理.我们在腌制鸡蛋时发现,刚放入浓盐水中的鸡蛋浮在液面上,过一段时间,鸡蛋会下沉,一个月左右就成为可食用的咸鸡蛋了.请你用学过的物理知识解释上述现象.