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【单选题】
在Java中,以下有关类的关联关系描述错误的是()。A.
在Java中，通过对象也可以进行关系描述，他们分别为一对一、一对多、多对一和多对多。
B.
一对一的关系就是在本类中定义对方类型的对象
C.
一对多的关系就是一个A类类型对应多个B类类型的情况，需要在A类中以集合的方式引入B类类型的对象，在B类中定义A类类型的属性a
D.
多对多的关系：在A类中定义B类类型的集合，在B类中定义A类类型的集合
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【单选题】After twenty years of doing nothing, Patrick was finally on the ______ road.
A.
right
B.
precise
C.
accurate
D.
exact
【简答题】储有氮气的容器以某速度 v 作定向运动。假设该容器突然停止后, 分子全部定向运动动能都变为气体分子热运动的动能, 此时容器中气体的温度上升 1K, 则容器作定向运动的速度v ≈ m/s。
【简答题】After twenty years of shaving（剃须）himself every morning, a man in a small Southern town thought he had enough. He told his wife that he intended to let the local barber shave him each day. He put on hi...
【单选题】Tom all his loan after twenty years during his family lived a hard life. [ ]
A.
paid back;when
B.
paid off;why
C.
paid off;which
D.
paid for;that
【单选题】When he was set free after twenty years in prison, he was amazed ______ the changed world he found.
A.
at
B.
of
C.
on
D.
to
【简答题】He finally won his after twenty years in jail.
【简答题】阅读理解。 After twenty years of shaving himself every morning, a man in a small Southern town thought he had enough. He told his wife that he wanted to let the barber shave him every day. He put on his ha...
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