题干
Even on a cold day he prefers ______ out to play football ______at home．
A：going;rather stay
B：going;to staying
C：to go;rather than staying
D：to do;rather than to stay
答案(点此获取答案解析）
B
，在反应达到平衡后保持温度不变，若缩小容器的体积，则混合气体的平均相对分子质量