题干
Stephon Marbury, 40, who helped the club—Beijing Ducks _____ three CBA championship titles will end his basketball career in China.
A：secure
B：grasp
C：purchase
D：reserve
答案(点此获取答案解析）
A
B（g）+ 2C（g），且达到平衡。当升高温度时，气体的密度增大，则下列叙述中正确的是（ ）
