It can be inferred from the passage that______.A．mental cosmetics is already a realityB．a
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It can be inferred from the passage that______.
A．mental cosmetics is already a reality
B．a new generation of mind-enhancing drugs may be a near future
C．Ritalin and Modafinil have no mind-enhancing properties
D．cognitive enhancers have been developed perfectly
请帮忙给出正确答案和分析，谢谢！
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正确答案：B
推理题。这篇文章对这种新一代药物的功用和优点进行了简单的介绍，但很明显这种药物还没有被正式研发出来，很多问题还停留在设想阶段，但是科学家对此表示出了极大的信心，所以[B]更准确，并且文章的第二段Powerfulstimulantsthatimprovememory，intellectualagilityorotheraspectsofmentalperformancewillalmostcertainlybedevelopedoverthenext20years．也说明了这一点。