题目内容

Einstein spent his whole life trying to understand the ________________ .

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At the turn of the century Einstein made discoveries about , and that have transformed people’s view of universe.

Einstein used to think that one thing has to anotherto make it move, but the fact that the needle of the compass behaved in such a way made him realize that something deeply hidden had to lie behind things.

歌﹑谣的分称﹐最早见于

A. 《汉书·艺文志》
B. 《诗经》
C. 《毛诗故训传》
D. 《韩诗章句》

歌谣所研究的内容必须具备的特点:

A. 歌谣是韵文体。
B. 歌谣必须是以口头形式流传和保存。
C. 歌谣还包含一部分俗曲、戏曲。
D. 歌谣可以歌唱或吟诵。