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题目内容
（洛阳理工学院-英语2(高起专)）
3. (单选题) The ruins of the ancient city ________ of great cultural value and should be preserved for research in the future. ( )(本题2.0分)
A、 is
B、 are
C、 was
D、 were
A、 is
B、 are
C、 was
D、 were
参考答案