单选题
Who proved that Feyman's concept, "There's Plenty of Room at the Bottom" was right?
A、
Chad Mirkin at Northwestern University
B、
Researchers at Almaden Research Center
C、
Scientists manipulating atoms and "spray painting"
D、
A professor at the California Institute of Technology
【正确答案】
B
【答案解析】
第三段中讲在1990年时，IBM的那个研究中心的研究人员取得了突破，能够随心所欲地重排单个分子，从而证明了Feynman理论的正确。文中也有thus proving Feynman right一句，所以选B。
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