词汇:
protostar n.原恒星 stellar adj.恒星的;星球的 primordial adj. 原始的
the Big Bang:宇宙大爆炸,创始大爆炸。这是天体物理学关于宇宙起源的理论。根据 大爆炸理论,大约在 130 亿年前,宇宙所有的物质都高度密集在一点,有着极高的温度 , 因而发生了巨大的爆炸。大爆炸以后,物质开始向外大膨胀,就形成了我们今天看到的 宇宙。但是,宇宙大爆炸仅仅是一种学说,是根据天文观测研究之后得到的一种设想。
state-oe-the-art:形容词,意思是最新的、达到最高技术水平的、代表当前科 技发展水平。
sets the bar:制定标准
What can the state-of-the-art computer simulation tell us about?
B How the Big Bang marked the beginning of our universe.
D How dust grains and gases form after the Big Bang.
A The early universe. B Cosmic dark ages.
What does the word minute mean in the expression minute density variations?
C Exceptionally large. D Exceptionally small.
A It had a mass of one percent of the sun.
C It began to combine heavy elements after it evolved into a massive star.
All except one of the following indicate the goals of the simulation project. Which one is it?
【2015职称英语理工类阅读理解复习必备精选练习题(5)】相关文章:
最新
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01