2. 外语
  3. The discussion was so prolonged and exhausting that______the speakers stopped for refreshments.

The discussion was so prolonged and exhausting that______the speakers stopped for refreshments.

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问题 The discussion was so prolonged and exhausting that______the speakers stopped for refreshments.
选项 A、at large
B、at intervals
C、at ease
D、at random
答案B
解析 此题考介词短语的意义及作用。at intervals：happening regularly after equal peri—ods of time“不时，时时”，“每隔若干时间”，可接of，也可用来表示距离。如：Itsnowed at intervals this week．这星期不时下雪。The streetcars run at intervals of halfan hour．市内有轨电车每隔半小时发一趟车。常用的固定短语还有：at regular in—tervals“每隔一定时间”，at short intervals“常常”。at large“全体的，整个的，在逃的”，作为“全体”讲时，常放在名词之后作定语；作“在逃的”解时，常用作表语。如：People at large are against war．广大人民是反对战争的。As long as thosefellows are at large，one cannot feel secure．只要那些家伙逍遥法外，任何人都不会感到安全有保障。at ease“无拘无束，安逸”，常用于动词之后，不放在句首。feel atease“感觉自在”；set one’s mind at ease“使某人放心”；put sb．at ease“使某人不拘束”；live(sit)at ease“悠闲地生活(坐着)”；feel(be)ill at ease“感到心神不安”。at random“胡乱地，随便地，漫无目的地”，作状语，一般不放在句首。如：His clothes were scattered about the room at random．他的衣服胡乱地散放在室内各处。guess at random“瞎猜”；read at random“无目的地浏览”；open a book at ran—dom“随便打开一本书”；shoot at random“乱开枪”。可见，无论从意义上还是从位置上看，at ease，at large，at random都不合适。题句意为：讨论拖得太长太耗人，发言的人不时停下来休息休息。
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