单项选择题

案例分析题

Structured programming practices （） rise to Pascal，in which constructs were introduced to make programs more readable and better （） . C provided a combination of assembly language and high-level Structure to create a general-purpose language that could be used from system to （） programming. Next came object orientation，which is （） of a methodology and design philosophy than a language issue．This is （） by the addition of so-called OO extensions to current languages，such as C．

This is （） by the addition of so-called OO extensions to current languages，such as C．

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