2. 外语
  3. Another factor in the display of art objects (concerns their continued) (preservation). Because of the sensitivity of some of th

Another factor in the display of art objects (concerns their continued) (preservation). Because of the sensitivity of some of th

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问题 Another factor in the display of art objects (concerns their continued) (preservation). Because of the sensitivity of some of the materials (used in their creation), it is necessary to control within narrow limits the temperature, humidity, and lighting (which) they are exposed.
选项 A、concerns their continued
B、preservation
C、used in their creation
D、which
答案D
解析 (改为: to which)
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