求翻译：要改变农村小学教材单一这种状况，应选用经过全国中小学教材审定委员会审定通过的教材，目前已通过的有近20种:如人教版、北师大版、四川版、江苏版、广东版等(2002年秋季开始，未列入中小学教学用书目录的小学英语教材将停止使用)。公平竞争应成为不断改进教材的动力，这样做有利于提高教材的质量，也才能保证多种教材进入课堂，彻底改变“一套教材打天下”的局势。百花齐放的景象也符合各地发展不平衡的实际，适应不同层次学校的需要，课程教材的多元化必将给外语教育带来全新气象(陈俊，2002:5)。是什么意思？

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Must change the countryside elementary school teaching material sole this kind of condition, elected with examines and approves after the national elementary and middle schools teaching material examination and approval committee through the teaching material, at present already through has the near

Rural primary school textbooks must be changed with a single of this situation, should use a textbook of primary and middle school textbook approval Committee approved, has been through nearly 20: people's education, Beijing Normal University, Sichuan, Jiangsu, Guangdong, etc (the autumn of 2002, is