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 介词词组辨析。at large“整个地；充分地”；at intervals“不时，时时”；at ease“不紧张，自由自在”；at random“随便，随机”。注意so…that…句型so后面的内容prolonged and exhausting(冗长且使人筋疲力尽)是原因，that是导致的结果，根据句意，只有B项符合题意。refreshments意为“饮料，点心”。
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