In 1915 Einstein made a trip to Gottingen to give some lectures at the invitation of the mathematical physicist David Hilbert. He was particularly eager—too eager, it would turn 【B1】______ to explain all the intricacies of relativity to him. The visit was a triumph, and he said to a friend excitedly: "I was able to【B2】______Hilbert of the general theory of relativity." 【B3】______all of Einstein' s personal turmoil 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 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 with his competitor Hilbert. Worried【B19】______being scooped, 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.

【正确答案】 C

【答案解析】解析：考查动词短语辨析。文中说爱因斯坦非常急切地想向数学物理学家大卫-希耳伯特解释相对论的种种微妙之处，后来的情形证实了这一点。turn out意为“(结果，后来)证明”，因此选项C．out正确。turn up意为“开大(声音)，出现”；turn over意为“翻倒，移交”；turn off意为“关掉”，均不符合题意。

【正确答案】 C

【答案解析】解析：考查动词辨析。此处需要补足从句中的谓语动词。本句句意为“他努力去发现可以______其地心引力概念的正确公式，去发现那些能够定义物体移动穿过空间并且物体是如何环绕空间的那些原理。”C．describe意为“描述”，符合语境。imitate“模仿”；ignite“点火，点燃”；ascribe“归因于”，均不符合题意。故选C。

【正确答案】 B

【答案解析】解析：考查动词辨析。根据上下旬逻辑含义，此处需要动词表示“意识到，发现”，本句句意应为“到夏天结束的时候，他意识到他一直使用了三年的数学路径是有错误的。”B．realized意为“意识到”，符合语境。resolve“使下决心，解决”；accept“接受”；assure“保证，确保”，均不符合语境。故选B。

【正确答案】 D

【答案解析】解析：考查上下文语义及形容词辨析。空格处应该填的词与下文有关，下文中说希耳伯特正在同爱因斯坦“竞赛”，想要“先”找出正确的方程，因此二位卓越的科学家之间存在一种竞争关系，所以应选择D．competitive，意为“竞争的”。complex“复杂的”，compatible“可兼容的”，comparative“比较的”，均不符合语境。

【正确答案】 B

【答案解析】解析：考查名词辨析。短语to one’s horror意为“令人恐怖的、恐慌的”，代入句子中，“使爱因斯坦害怕的是，他发现希耳伯特吸收了从爱因斯坦讲座中学来的内容…”，符合语境。humor“幽默”；excitement“激动”；extinction“消灭，废止”，均不符合语境。故选B．horror。

【正确答案】 C

【答案解析】解析：考查动词短语辨析。本题实际上考查的是短语动词come up with“找到，想出，得出”的用法，这应该是考生非常熟悉的一个短语动词。come up against意为“突然(或意外)碰到(困难、反对等)”；come up to意为“比得上，达到(标准等)”，不符合原意；come up for不规范，三项均不符合语境。故选C．with。