题干

阅读下列甲乙两个文段,完成下列小题

     【甲】虽有佳肴,弗食,不知其旨也。虽有至道,弗学,不知其善也。是故学然后知不足,教然后知困。知不足,然后能自反也;知困,然后能自强也。故曰:教学相长也。

(选自《礼记·学记》)

     【乙】孔子学琴于师襄子,十日不进①。师襄子曰:“可以益矣。”孔子曰:“丘已习其曲矣,未得其数也。”有间,曰:“已习其数,可以益矣。”孔子曰:“丘未得其志也。”有间,曰:“已习其志,可以益②矣。”孔子曰:“丘未得其为人也。”有间③,曰:“有所穆然深思焉,有所怡然高望而远志焉。”曰:“丘得其为人④,黑而长,眼如远视,如王天下,非文王其谁能为此也!”师襄子辟席再拜,曰:“师盖云《文王操》⑤也。”

(选自《史记》有删改)

      【注】①进:继续学(新内容)②益:增加、加深③有间:过了一段时间。④为人:作曲的人⑤《文王操》:周文王谱写的琴曲名。

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    A telescope, called Gaia, is being designed by astronomers in Europe, and it couldn't be more different from Pan-STARRS, which is another telescope being designed. While Pan-STARRS will be looking for asteroids (小行星) and comets headed for Earth, Gaia will be looking at our entire galaxy (银河系).

    Gaia is designed to draw a map of the Milky Way, our home galaxy. Just as a map of your town gives you a picture of where things are located, Gaia's map of the galaxy will tell astronomers where the stars are. Over five years, Gaia will observe (观察) about a billion stars and other objects in our galaxy. Each object will be observed about 70 times.

    Gaia will be sent into space connected to a rocket. It contains two telescopes, each focused at a different angle (角度). These two telescopes act like Gaia's “eyes”. The reason why humans can see things in 3D is that we have two eyes focused on the same object, at slightly different angles. By using two telescopes like eyes, Gaia can produce the first 3D map of the positions of the stars it views.

    Gaia, which is to be sent into space, will be a powerful telescope. If you were to use it on Earth, for example, you could stand 600 miles away from your best friends and still get a clear picture of their hair.

    Gaia is one of more than a dozen telescopes being designed by scientists right now. The next generation of telescopes will reveal new parts of our universe that will seem surprising. The universe, with all its planets, stars and other strange objects, is a puzzle with pieces that we can see by using powerful telescopes.