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  3. PASSAGE ONE For what have the traditional tungsten bulbs been criticized?

PASSAGE ONE For what have the traditional tungsten bulbs been criticized?

admin2016-12-06  27
问题 PASSAGE ONE
For what have the traditional tungsten bulbs been criticized?
选项
答案Their high carbon emissions.
解析 第1段首句句末提到，停止使用传统钨丝灯泡，每年可减少500万吨的carbon emission，据此可知，“碳排放”就是钨丝灯备受诟病的缺点。
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