题目内容
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。
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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.
Task 3 Word FormationComplete each of the following sentences with the proper form of the word given in brackets.1. We have a relationship that can actually absorb this ___________ as we work through difficult issues. (tense)2. Mum sent me off with a final __________ to be back before 11 pm. (remind)3. We expect to take __________ of our new car next week. (deliver)4. Efforts should be made to ensure graduates are ________ prepared for careers upon graduation. (adequate)5. Media is watched, read, and heard while apps tend to be interactive, productive, and specifically ___________. (information)6. We are ___________ and want to make sure that they get that help. (support)7. The __________ made about the economy's rate of growth proved to be incorrect. (assume)8. The dancers present two __________ a day—one at around noon and the other at around 8: 00 pm. (perform)9. Employers usually decide within five minutes whether someone is __________ for the job. (suit)10. WHO continues the efforts to improve the health care for affected populations through the ___________ of medical and educational programs. (establish)
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