Cancer is a group of diseases in which there is uncontrolled and disordered growth of ______ cells.

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问题 Cancer is a group of diseases in which there is uncontrolled and disordered growth of ______ cells.

选项 A、controversial
B、abnormal
C、inferior
D、irrelevant

答案B

解析 controversial意为“争论的,争议的”:abnormal意为“变态的,反常的”,指不平常的或非惯例的;inferior意为“下等的,下级的”;irrelevant意为“不相关的,不切题的”,指与所讨论的问题不相关的。句子的主语是cancer,所填之词修饰cells,所以应选abnormal。
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