One of my friends is a policewoman, this is my photo and that is .
A:her
B:hers
C:she
D:his
诗中写新陈代谢不可抗拒的一联是____。这一联的意思是:____。
物质
熔点/℃
沸点/℃
密度/g•cm﹣3
溶解性
A
﹣11.5
198
1.11
A、B互溶,
且均易溶于水
B
17.9
290
1.26
据此分析,将A和B相互分离的常用方法是( )
________Beijing you see today is quite ________ different city from what it used to be.
不属于秦岭—淮河的意义的是( )