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【单选题】

Choose the most appropriate answer by completing the sentences below or answering the questions.1. Boys and girls are different in developmental process. Which of the following statement is true?

A.
The psychological development of boys is faster than that of girls.
B.
The brain development of girls is faster than that of boys.
C.
The physical development of girls is faster than that of boys.
D.
The mental development of boys is faster than that of girls.
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参考答案:
C
参考解析:
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举一反三

【单选题】Which operation is executed for each accessed node in a splay tree?伸展树每次访问过某节点后都会把该节点:

A.
removing it 删除
B.
moving it to the higer level 上移一层
C.
moving it to the root 移动到根节点
D.
accessing it again 再次访问该节点

【单选题】Where do they often exercise?

A.
In the school playground.
B.
In the gymnasium.
C.
Go to the local sport center.
D.
In a fitness club with personal training services

【单选题】下列说法错误的是:()

A.
生命教育就是以生命为核心,以教育为手段,倡导认识生命、珍惜生命、尊重生命、爱护生命、享受生命、超越生命的一种提升生命质量、获得生命价值的教育活动;
B.
生命教育,就是在生命活动中,通过生命活动和为了生命而进行的教育;
C.
生命活动不是实践活动;
D.
生命教育是为了生命而进行的教育。

【单选题】关于枚举定义说法正确的是:

A.
定义枚举的关键字是:class
B.
枚举中只能有常量
C.
枚举是一种特殊的类,因为它的对象的个数是有限的
D.
枚举中不能定义抽象方法