A, Scientists have created the first microscopic robot from DNA molecules — it’s a scientific breakthrough., B, The nanospider is a real robot that can move and perform simple tasks., C, In the future, nanospiders could be used in medicine and electronics., D, The structure of the nanospider allows it to move — it has a body made of proteins and DNA strands., E, Earlier DNA walkers were slower, but the nanospider is a major improvement., F, Nanotechnology can help in diagnosing diseases and delivering medicine directly to cells., G, Some people worry about the risks of nanotechnology and call for strict control..

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