从题材上讲，浪漫主义时期芭蕾舞剧（）开辟了木偶题材的芭蕾舞剧发展领域。
A、《仙女》
B、《葛蓓莉娅》
C、《吉赛尔》
D、《胡桃夹子》
双人舞《飞天》舞蹈体现了敦煌特有的“s”形曲线运动规律，把静止的姿势和与其风格统一的动作结合起来，特别是“反弹琵琶伎乐天”的造型让观众耳目一新。
1、正确2、错误【B3】all of Einstein's personal turmoil (焦躁) at the time, a new scientific anxiety was about to【B4】. He was struggling to find the right equations that would【B5】his new concept of gravity,【B6】that would define how objects move【B7】space and how space is curved by objects. By the end of the summer, he【B8】the mathematical approach he had been【B9】for almost three years was flawed. And now there was a【B10】pressure. Einstein discovered to his【B11】that Hilbert had taken what he had learned from Einstein's lectures and was racing to come up【B12】the correct equations first.
It was an enormously complex task. Although Einstein was the better physicist, Hilbert was the better mathematician. So in October 1915 Einstein【B13】himself into a month-long frantic endeavor in【B14】he returned to an earlier mathematical strategy and wrestled with equations, proofs, corrections and updates that he【B15】to give as lectures to Berlin's Prussian Academy of Sciences on four【B16】Thursdays.
His first lecture was delivered on Nov. 4, 1915, and it explained his new approach,【B17】he admitted he did not yet have the precise mathematical formulation of it. Einstein also took time off from【B18】revising his equations to engage in an awkward fandango (方丹戈双人舞) with his competitor Hilbert. Worried【B19】being scooped (抢先), he sent Hilbert a copy of his Nov. 4 lecture. "I am【B20】to know whether you will take kindly to this new solution," Einstein noted with a touch of defensiveness.
【B1】
A．up
B．over
C．out
D．off