A-A+
Although it was not named ________ 1782 this
问题详情
Although it was not named ________ 1782, this kind of metal was used as early as 5300B. C.
[A]for
[B]in
[C] until
[D] since请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
29.C【精析】句意：虽然这种金属直到1782年才命名，但是它早在公元前5300就被使用了。本题考查的是介词的用法。for表示时间，原因，目的等；in表示时间，位置，状态等；until到…为止；slnce表示自从。故C正确。
