下列现象中,属于凝华现象的是( )
A: 冰冻的衣服变干
B: 冰凌消融
C: 树枝上的雾凇
D:昆虫和植物上的露珠
(2015•四川达州)—Excuse me, could you please tell me the way to the ? I have had too much water.—Go along the street and you will find one.
下列能为生命活动提供能量的是( )
①糖类 ②脂肪 ③蛋白质 ④水 ⑤无机盐 ⑥维生素
7.65-0.6×0.3-1.82=( )