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? Generally speaking, the factory mode is suitable: whenever a large number of products need to be created and have a common interface, they can be created through the factory method mode. Of the above three modes, the first cannot create the object correctly if the incoming string is wrong, and the third does not need to instantiate the chemical factory class compared with the second, so in most cases, we will choose the third-static factory method mode. ?--------------------------------2. Learn knowledge, seek development, and persist in shaping people with a prosperous culture. The overall quality of young people in rural areas is not very high, so it is urgent to improve their ideological, moral, scientific, technological and cultural qualities as soon as possible. The government and society should educate the majority of young people in loving their motherland and hometown in relevant aspects, and help them learn the Party's policy of enriching the people and the ideological morality and code of conduct suitable for the development of the socialist market economy. We will continue to carry out the education of "thinking of the source of wealth and thinking of progress when we are rich." In order to cooperate with the modernization and the development of information technology, efforts should be made to establish a standardized and sound training network and a training base through multiple channels and levels. According to the actual situation, efforts should be made to catch up with the development of the city./peon (coolie)得知苏丽丽怀了自己前男友的孩子，苏陌雪和易家的婚约被取消并惨遭分手，而这一切都是苏丽丽和后妈的谋划。凌墨琛即将担任凌氏董事长，但却被告知必须要已婚，实则是爷爷着急抱孙