2. 职称英语
  3. Although it was not named ______ 1782, this kind of metal was used as early as 5

Although it was not named ______ 1782, this kind of metal was used as early as 5

游客2025-07-25  1
问题 Although it was not named ______ 1782, this kind of metal was used as early as 5300 B. C.
选项 A、for
B、in
C、until
D、since
答案 C
解析 考查介词用法。由句意和句子结构不难看出这里是一个not... until... 结构，表示“直到…才…”。很多考生没有看到前面的否定词not而误选了[B]项in。事实上，not... until... 结构可以当成一个固定搭配来记，不过要注意，有时这个not是以其他否定词的形式出现在句中，这时就要仔细阅读和理解题意了。其余三个介词中，for引出的是时间段，且多与完成时态连用；in可以引出具体年份，但由于前面有否定词。not，因此填入后不合逻辑；since指“自从”，一般跟完成时态或者进行时态。
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