山高一丈,土凉三寸指影响土壤热量的因素受()
A.纬度
B.坡向
C.海拔高度
D.其它
参考答案:C
Interest is as_______to learning as the ability to understand,even more so.
A.vital
B.available
C.specific
D.similar
绿色食品产地的选择