In telecommunications, 5G is the （1）generation technology standard forbroadband cellular networks. 5G networks are（2）cellular networks, for which the service area is divided into small geographical cells. All 5G（3）devices in a cell are connected to the Internet and telephone network by radio waves. The main advantage of the newnetworks is that they will have greater bandwidth, giving higher download speeds,eventually up to 10（4）Due to the increased bandwidth,it is expected the networks will increasingly be used as general internet service providers for laptops and desktop computers,competing with existing ISPs such as cable internet, and also will make possible new applications in internet of（5））（IoT）and machine to machine areas.

A

third

B

fourth

C

fifth

D

sixth

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答案：

C

解析：

题干中提到“In telecommunications，5G is the （）generation technology standard for broadband cellular networks”，根据常识和语境可知，5G是宽带蜂窝网络的第五代技术标准，因此空格处应填“fifth”，选项C为“fifth”，是正确答案。

答案：

解析：

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