The discussion was so prolonged and exha

Freeti2019-12-17  13

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

解析因为这个讨论是prolonged and exhausting 的,prolonged and exhausting就表达了作者的态度,所以空格处填入的词语应该是一中性词。答案是B,at intervals(时不时地)。At large“详细的”;at ease“自由自在地”;at random“胡乱地”。
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