阅读10000句阅读10000句.docVIP

阅读10000句：1-10 第一部分：快速阅读能力测试篇 Passage 1 total: 148 words The word laser was coined as an acronym for Light Amplification. Ordinary light is emitted spontaneous while stimulated emission is different because it occurs when an atom or molecule is stimulated to send off lights. For many years physicists thought that atoms and molecules always were much more likely to emit light spontaneously and that stimulated emission thus always would be much weaker. It was not until after the Second World War that physicists began to seek ways by which one atom or molecule could be stimulated to emit light, amplifying it too much higher powers. The key concepts emerged in 1957. Towness and Artyur Schawlow, wrote a long paper summerizing the conditions required to amplify stimulated emission of visible light waves. Meanwhile, similar ideas crystallized in the mind of Gordon Gould, then a 37-year-old graduate student at Columbia, who wrote them down in a series of notebooks. 一、即读即练 1)多项选择 1. The word “it” (line 2) refers to______. A) stimulated emission B) energy C) molecule D) atom 2. A laser can be best illustrated as ______. A) a phenomenon of stimulating atoms and molecules to give off light B) an atom in a highenergy status C) a technique for destroying atom or molecules D) an instrument for measuring light waves 3.When did scientists attempted to search for ways by which an atom could be stimulated to give off light? A) before the second world war broke out. B) when the second world war was at its peak. C) when the second world war came to an end. D) when laser technique had already been fully developed. 4.In his research at Columbia University Charles Towness worked with all of the following EXCEPT______. A) stimulation B) amplification C) invisible lights D) conditions to emit lights 5. It can be concluded from the passage that ______. Towness and Artyur Schawlow worked in the same institute Gordon Gould’s concept was different from t