Bob has got good exam results. His parents are proud of his ______.
A:success
B:chance
C:idea
D:dream
如图所示的各种事例中,跟大气压无关的是( )
用课文里的词语填空。
____的激流 ____的江水
____的百姓 ____的牛皮船
____的七位姑娘
下列现象中不属于缓慢氧化的是( )