(单选题)

（）

A.when

B.why

C.what

D.whether

参考答案：D

参考解析：

考查宾语从句。句意：一个国际研究员小组分析了多种食肉动物的大脑褶皱外层，包括狗和猫，以此判断捕猎的需求是否意味着皮质神经元比例更高，增加有需要的地方的脑力。when意为“什么时候”；why意为“为什么”；what意为“什么”；whether意为“是否”。根据句意可知，这里是说要根据动物的外层来判断捕猎需要和神经元比例之间是不是有关系，故选whether。故选D。

知识点：

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