浓硝酸不具有的性质是（ ）
A：吸水性
B：酸性
C：强氧化性
D：易挥发性
23°30′=____°．
3.76°=____°____′____″．
25.72°=____°____′____″．
15°48′36″=____°；
3600″=____′=____°．
我国把计划生育作为一项基本国策的原因是（ ）
The husband appreciates that his wife always avoids________him in front of his friends.
