Science and technology promote economic growth and development. Developing high-tech industries with the majority of knowledge workers. promote economic restructuring . promote the improvement of the quality and competitiveness of goods and improve people's quality of life

Today, technology is very popular because of its quickness and convenient. One of them is smartphone. It plays a important part of our life. There are many advantages. Firstly, smartphone helps us make friends thanks to facebook, Instagram, Skype....Secondly, lt helps us learn lessons easily.

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