-Let's play tennis.
-_______. I don't like it.
A:That sounds good
B:That sounds boring
C:That sounds interesting
D:That sounds relaxing
对“痰”和“唾液”的有关叙述中,正确的是( )
【实验一】制备氮化铝
【资料1】实验室常用饱和亚硝酸钠与氯化铵溶液反应制取纯净的氮气。
有关反应的化学方程式为:
NaNO2+NH4Cl NaCl+N2↑+2H2O(此反应是放热反应);
Al2O3+3C+N22AlN+3CO
试回答: