全国人大常委会副委员长成思危日前在接受记者采访时表示,上海在未来20年至30年可能发展成世界十大超级城市之一。他认为,要成为超级城市需具备四个基本条件:一是具有良好的生存条件。首先必须解决缺水和水污染问题,而我国北方大城市普遍面临缺水危险;其次要推广清洁能 Cheng Siwei, vice chairman of the Standing Committee of the National People’s Congress, said in an interview with reporters recently that Shanghai may develop into one of the world’s top ten super cities in the next 20 to 30 years. He believes that to become a super city requires four basic conditions: First, it has good living conditions. First of all, we must solve the problem of water shortage and water pollution, while the major cities in northern China are generally exposed to the danger of water shortage; the second is to promote clean energy.