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　　【参考范文】　

　　With mobile phones, we can keep in touch with others wherever we are.But there are also some obvious drawbacks of the mobile phones.For example, under most circumstances，the radiation is harmful to our health, as a result of which some people reject using them.As far as I am concerned, I don't oppose using mobile phones; what's more, I think mobile phones are portable and it is convenient to send text messages by them.

　　 【导学号：25000009】