天津联通DNS系统采用基于anycast技术的分布式DNS架构，实现基于软件的负载均衡功能。
正确
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Mr.Greenisusedto_________twoapplesafterluncheveryday.
Wecan____thetwoislandswithabridge.
Ithappenedinfrontofafruitandvegetable____inmyneighborhood.
Her____washeldatthelocalchurch.
Hebuiltatelescope____hecouldstudytheskiesinhisfreetime.
