2. 外语
  3. A LED Lighting Is Not Mature B LED Lighting Will Replace Traditional Lighting C Almost Everything Could Be the Main Light

A LED Lighting Is Not Mature B LED Lighting Will Replace Traditional Lighting C Almost Everything Could Be the Main Light

admin2009-06-15  71
问题 A   LED Lighting Is Not Mature
B   LED Lighting Will Replace Traditional Lighting
C   Almost Everything Could Be the Main Light Source in the Future
D   LED Lighting Has Many Advantages
E   Bowers Made an Unexpected Discovery
F   LED Light Bulbs Look Lumpy
A   traditional lighting is less durable and dearer
B   a laser excited the quantum dots
C   America adopted LEDs
D   graduate students work hard
E   quantum dot mixtures are magic
F   it is more efficient
选项
答案F
解析 题干涉及的内容在第五段可以找到，有关的句子是：“LEDs don’t emit heat，so they’re also more energy efficient”，很明显，F是答案。
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