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  94
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
*
选项
答案E
解析 Bowers做实验，目的并非寻找新照明源。量子点在激光的激发下发出白光是一次意外的发现。段中用了“unexpected”和“surprised”都说明了这一点。第一段的“accidental discovery”也佐证了这是一次偶然的发现。因此，E是答案。
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