—What are you doing, Uncle Wang?
—I am choosing some clothes and I'll _______ to kids in West China.
A:give them up
B:give them away
C:give them off
D:give them in
①X+Y(NO3)2=X(NO3)2+Y ②X+H2SO4(稀)≠
③M+H2SO4(稀)=MSO4+H2↑ ④N+MSO4=NSO4+M.
下列各句中,没有语病的一句是( )
如图是某种物质熔化时温度随时间变化的图象.根据图象特征可判断该物质是 ____(选填“晶体”或“非晶体”);加热到第10min时,该物质的状态为 ____(选填“液态”、“固态”或“固液共存”).