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Lesson 55 astronomy 天文学 Recent developments in astronomy 天文学的最新发展使我们 may have made it possible to detects in our own Milky Way and in other galaxies. 能够在银河系和其他星系发现行星。 The objective of astron
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The Open Boat by Stephen Crane, Part One 斯蒂芬克莱恩《海上扁舟》Ⅰ Crane was traveling from the United States to Cuba as a newspaper reporter. One night, his ship hit a sandbar. It sank in the Atlantic Ocean, off the coast of Florida. M
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马克吐温，是美国的幽默大师、小说家、作家，也是著名演说家，威廉福克纳称赞马克吐温为第一位真正的美国作家，我们都是继承他而来。马克吐温以高超的幽默、机智与名气，被称为美国
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Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen. 如果我们能在80岁的时候出生，然后慢慢走向18岁，那生活将会幸福无比。 Twenty years from now you will be more d
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Do you appreciate the small things in life? In physics, infinitely small things are problematic. If a structure can be infinitely divided into smaller parts, can there be such a thing as a smallest possible space or does this division go on eternally
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