题干
There are so many people in the shop. You must _________ your things.
A：look at
B：look after
C：put away
D：put on
答案(点此获取答案解析）
B
There are so many people in the shop. You must _________ your things.
A：look at
B：look after
C：put away
D：put on
Cd+2NiO(OH)+2H2O由此可知，该电池放电时的负极材料是