2010 年职称英语理工类年职称英语理工类 A 级真题答案及解析级真题答案及解析第四部分阅读理解How the First Stars in the Universe Came into ExistenceResearchers believe that our universe began with the Big Bang about 13 billion years ago,. And that soon after that event, matter began to form as small dust grains and gases. 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.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 researchers computer simulation 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 explosions provided the seeds for subsequent stars to come into being.According to their simulation, gravity acted on minute density variations in matter, gases, and the mysterious “dark matter“ of the universe after the Big Bang in order to form this early stage, of a stara protostar with a mass of just one percent of our sun. The simulation reveals how pre-stellar gases would have actually evolved under the simpler physics of the early universe to form this protostar. Dr. Yoshidas simulation also shows that the protostar would likely evolve into a massive star capable of synthesizing heavy elements, not just in later generations of stars, but soon after the Big Bang.“This general picture of star formation, and the ability to compare how stellar objects form in different time periods and regions of the universe, will eventually allow investigation into the origins of life and planets,“ said Lars Hernquist, a Professor of Astronomy at Harvard University. “The abundance of elements in the universe has increased as stars have accumulated,“ he says, “and the formation and destruction of stars continues to spread these elements further across the universe. So when you think about it, all of the elements in our bodies originally formed from nuclear reactions in the centers of stars, long ago. “Their simulation of the birth of a protostar in the early universe signifies a key step toward the ambitious goal of piecing together the formation of an entire primordial star and of predicting the mass and properties of these first stars of the universe. More powerful computers, more physical data, and an even larger range will be needed for further calculations and simulations, but these researchers hope to eventually extend this simulation to the point of nuclear reaction initiation when a stellar object becomes a true star.第二篇与综合 A 的一样阅读第三篇阅读第三篇ScientistsScientists MakeMake SweetSweet DiscoveryDiscovery2010 年职称英语考试理工 A（代码 12）完整答案（环球出的）第一部分：词汇选项1-5 CDCDA6-10 CBBDC11-15 CDCAD第二部分：阅读判断16、A 17、C 18、B 19、B 20、B 21、B 22、C第三部分：概括大意23、F 24、C 25、A 26、E 27、C 28、B 29、D 30、E第四部分：阅读理解第一篇：CDCAB第二篇：CBBBA第三篇：BADBC第五部分：补全短文：ECDFB第六部分：完形填空：CDDBB DDDAA DAACB2010 年职称英语理工类 A 级真题答案及解析转自（一）词汇选项（一）词汇选项funnyfunny humoroushumorous appallingappalling terribleterriblediligentdiligent hardworkinghardworkingdecentdecent goodgoodputput upup withwith toleratetoleratedemolishdemolish disprovedisproveturmoilturmoil confusionconfusionhazardhazard dangerdangermergemerge combinecombineresentmentresentment angerangergracefulgraceful politepolitevaguevague unclearunclearimmenseimmense greatgreatspurspur encourageencouragevigorousvigorous energeticenergetic （二）阅读判断（二）阅读判断CaliforniaCalifornia GivesGives GreenGreen LightLight toto SpaceSpace SolarSolar PowerPower1.Solar-power satellites will use radio waves to beam energy down from space.答案为 A： right. 2.Solaren is going to design 200 solar-power satellites.答案为 C： Not mentioned3.Earth-based solar cells could collect solar power only when skies are clear.答案为 B:出题句: Earth-basedEarth-based solarsolar cellscells, by contrast, can only collect sunlight during daytime and when skies are clear. 出题句中提到了“位于地球上的的太阳能电池”收集太阳的两个条件：一个是在白天， 一个是当天空晴朗的时候。 而题干说“只有当天空晴朗的时候位于地球上的的太阳能电池才能收集太阳能”， 因此题干与文章相关内容不一致。4.An advantage of the space-based solar power system is that it is economical.答案为 B：出题句为： But space-based solar power must grapple with the high cost per kilogram of launching things into space, says Richard Schwartz of Purdue University in West Lafayette, Indiana. “If youre talking about it being economically viable for power of the Earth, it