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导语：以下英语网为大家整理了全面的职称英语考试历年真题及答案解析，《职称英语考试试题汇总：历年真题及答案解析》供大家参考学习。更多职称英语考试试题敬请关注英语网！ 【推荐】关注英语网微信：yingyuwang2013，更快获取真题答案及成绩查询信息。 第4部分：阅读理解(第3l～45题，每题3分，共45分) 下面有3篇短文，每篇短文后有5道题。请根据短文内容,为每题确定1个最佳选项。 第一篇 How the First Stars in the Universe Came into Existence How the first stars formed from this dust and gas has been a burning question for years，but a state-of-the-art computer simulation now offers the most detailed picture yet of how these first stars in the universe came into existence，researchers say． The composition of the early universe was quite different from that of today，and the physics that governed the early universe were also somewhat simpler．Dr．Naoki Yoshida and colleagues in Japan and the U．S．incorporated these conditions of the early universe，sometimes referred to as the cosmic dark ages，to simulate the formation of an astronomical object that would eventually shine its light into this darkness． The result is a detailed description of the formation of a protostar-the early stage of a massive primordial star of our universe，and the researcherscomputer simulation，which has been called a cosmic Rosetta Stone．sets the bar for further investigation into the star formation process．The question of how the first stars evolved is so important because their formations and eventual explo-sions provided the seeds for subsequent stars to come into being． | 
