北師大版高中英語(yǔ)模塊7--Unit19 lessons1-2

[00:01.26]Mobile phone technology has advanced [00:03.63]at an incredible rate in the last few years. [00:06.57]The first generation (1G) mobile phone system [00:10.03]was developed to make [00:11.35]and receive telephone calls anywhere [00:13.32]within the mobile phone network., [00:15.78]Then came the digital revolution [00:17.82]and 2G mobile phones could also be used [00:21.01]for sending text messages (SMS). [00:24.13]What this meant was that mobile phone users [00:25.84]could use SMS as a cheap means of keeping [00:28.92]in touch.According to one website, [00:31.94]China began using SMS in 2000 [00:34.79]and growth has been amazing. [00:37.07]From a little over 1 billion messages in 2000, [00:40.25]220 billion SMS messages were sent in 2003. [00:46.28]Recently developed 3G technology has enabled [00:49.06]new features to be added to mobile phones. [00:52.56]One such feature is a tiny camera [00:54.36]in the phone that enables tha sending [00:56.37]of photographs and video images. [00:59.55]Another development that has been added [01:01.08]is WAP technology that allows you [01:03.50]to access the internet from your phone. [01:06.24]At present, however, WAP technology [01:08.40]is more expensive than using a computer [01:11.28]but this is sure to change. [01:12.47]

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