[单选题]按照《国家电网有限公司95598一般诉求业务处理规范》规定，国网客服中心受理客户咨询诉求后，未办结业务 20分钟内派发工单，省公司，国网电动汽车公司，国网电商公司，地市、县公司应在国网客服中心受理客户诉求后()个工作日内进行业务处理、审核并反馈结果，国网客服中心应在接到回复工单后()个工作日内回复（回访）客户。
A.4;1
B.3;1
C.2;1
D.5;1

The American Revolution was not a revolution in the sense of a radical or total change. It was not a sudden and{{U}} (47) {{/U}}overturning of the political and social framework, such as later occurred in France and Russia,{{U}} (48) {{/U}}both were already independent nations. Significant changes were ushered in,{{U}} (49) {{/U}}they were not breathtaking. What happened was accelerated{{U}} (50) {{/U}}rather than outright revolution. During the conflict, people went on working and praying, marrying and playing. Most of them were not{{U}} (51) {{/U}}disturbed by the actual fighting, and many of the more isolated communities scarcely knew that a war was on.
America’s War of Independence heralded the birth of three modem nations. One was Canada, which{{U}} (52) {{/U}}its first large influx of English-speaking population from the thousands of loyalists who fled there from the United States;{{U}} (53) {{/U}}was Australia, which be