阅读下列文章，完成相应题目。 Some people seem to have extraordinary (非凡的) memories. Zheng Aiqiang, a “memory athlete” on TV show Super Brain (《最强大脑》), can remember 2,660 numbers in just one hour! You would think people like this have special brains. But according to a recent study by researchers from the United States and the Netherlands (荷兰), the brain structure (结构) of ordinary people and 23 of the world’s leading memory athletes shows no difference. That’s because good memories can be trained. New research in the journal Neuron (《神经元》) suggests that you can become a super memorizer with just six weeks of hard training, reported The Guardian. Researchers found that a technique (技巧) called loci, invented by the ancient Greeks, can greatly help improve memory. By using loci, you are using your imagination to improve the brain’s memory networks. You can link (关联) something you need to remember with a place that you know very well. For example, to remember a list of numbers, imagine yourself walking through your house. Each thing is linked to a number. For example, zero could be the handle (把手) on the door and five could be the painting on the wall. In one study, some ordinary people were given 20 minutes to remember 72 nouns (名词). First they could only remember 26 words. But when they were taught loci, they could remember 62 words. “Not everyone can become a (memory) champion. But everyone using the technique can improve a lot from the level they’re at,” said Boris Konrad, one of the researchers in the study.