His ability to absorb information was astonishing, but his concentration ______ was short.

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问题 His ability to absorb information was astonishing, but his concentration ______ was short.

选项 A、gap
B、interval
C、span
D、distance

答案C

解析 他吸收信息的能力让人惊讶,但他的注意力持续时间很短。A.gap表示“差距,分歧,间隙”,例如:bridge the gap弥合差距。B.interval指两件事情、两个活动等之间的“间隔,间歇”,例如He comes back to see us atregular intervals.他每隔一段时间就回来看看我们。C.span表示“跨距”,两个日期或事件之间的“时距,期间”,或者注意力(如本题)、生命等“持续的时间”,例如:life span寿命,使用期限。D.distance指一般空间上的距离、间距,例如:We can see a windmill in the distance.我们可以望见远处有架风车。注:concentration span指“注意力持续时间”。
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