单选题：Albert Einstein's theory of relativity helps to prove_______

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Albert Einstein's theory of relativity helps to prove__________ A．the creation of new entities
B．an explosion of huge stars
C．the tiniest particle
D．the same amount of mass
E．the existence of black holes
F．a fraction of an inch

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请在第43处填上正确答案。

请在第__43__处填上正确答案。

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