题干
Peter's father often watches basketball games __________ TV.
A：in
B：on
C：at
D：for
答案(点此获取答案解析）
B
Peter's father often watches basketball games __________ TV.
A：in
B：on
C：at
D：for
Ag+(aq)+Cl-(aq)在水中的沉淀溶解平衡曲线如图所示。下列说法正确的是 （ ）