John knows so much about the stars that I am sure it would be impossible to find
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John knows so much about the stars that I am sure it would be impossible to find his ________．
A.similar
B.same
C.twin
D.equal
试题答案
D
句意：约翰对星球的知识如此渊博，我可以断定，没有人可与他匹敌。equal n．对手，匹敌者；similar类似的，与to连用；twin孪生子，双生子。