题目内容

类封装比对象封装更具体、更细致。

A. 对
B. 错

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面向对象的继承性是子类自动共享父类数据结构和方法的机制。

A. 对
B. 错

My best friend, is a teacher, lives in Beling.

A. who
B. which
C. when

That's the apartment block my cousin lives.

A. when
B. that
C. where

These are the shoes I bought in the sales.

A. which
B. where
C. when

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