Complete the following sentences. For each blank use ONE OR TWO WORDS from the passage. Efficient lights________from going into

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问题 Complete the following sentences. For each blank use ONE OR TWO WORDS from the passage.
Efficient lights________from going into areas where it is not needed.

选项

答案prevent light

解析 文章最后一段讲到由节能灯来解决光污染问题,由此得出节能灯能够防止灯光照射到没有需要的地区。
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