It is believed that intelligence is to ______ extent ______ we are born with.A.some, anythingB.any, somethingC.any, nothingD.some, something
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D解析本题考查代词。to some extent是固定短语“在某种程度上”。something是与is构成“系表结构”，主语是intelligence。we are born with是定语从句，修饰something。另，something后面省略了引导词that。