题目内容
移动通信包括无线传输、有线传输，信息的收集、处理和存储等，使用的主要设备有收音机、移动交换控制设备和移动终端设备。
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移动通信无线服务区由许多正八边形小区覆盖而成，呈蜂窝状，通过接口与公众通信网（PSTN、ISDN、PDN）互联。
移动通信中建立一个呼叫是由BSS和SS共同完成的。
第二代移动通信技术的两种模式是：GSM移动通信、CDMA移动通信。
Task 1 Word SelectionFill in the blanks with words given below. Change the form where necessary.1. Various studies ________ that some forms of medicine are extremely effective.2. The report was written after analysing ______________ from the case histories of thousands of patients.3. Cultural biases consistently overrate men and _____________ women.4. The purpose of a movie poster is supposed to _________ curiosity and to make us smile.5. Preparations for the festival are now ____________ smoothly.6. I really appreciate Ann because she's been a _____________ help to me over the last few months.7. I think ____________ all parents want their children to do well in school.8. Rising prices are _______________ off many potential customers.9.In order to take good notes in class, you have to listen to what your ________ says.10. He had a golden _____________ to score in the first half but missed it.
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