第5题: [单项选择]The most serious block to concentration is the ______ which comes not from outside but from within. A. intermission B. involvement C. interruption D. intervention 参考答案:C 答案解析:[解析] 语义连贯题。妨碍注意力集中的应该是[C]interruption“打扰,干扰”,多指打断某人正在做的事情而形成干扰。[D]intervention“干预,干涉”为强干扰项,但interven