填空题Information About the Lecture According to the speaker, the central topic for Americans is ______. (1) When do millions of Americans send special cards and gifts that announce their love to their mates, their friends, their co-workers and their families On ______ Day. (2) The divorce rate in America is ______. (3) When an American falls in love, his her ______ would be given the strongest feelings rather than his her parents, brothers or sisters. (4) Americans think ______ is the basis of marriage (5)

单项选择题When did the Congress approve a bill to declare Labor Day a national holiday

单项选择题Some slaves were kept in a pen which was found in（）

A. Kentucky
B. Tennessee
C. Carolina
D. Virginia

填空题the Civil War

填空题Information About the Lecture According to the speaker, the central topic for Americans is ______. (1) When do millions of Americans send special cards and gifts that announce their love to their mates, their friends, their co-workers and their families On ______ Day. (2) The divorce rate in America is ______. (3) When an American falls in love, his her ______ would be given the strongest feelings rather than his her parents, brothers or sisters. (4) Americans think ______ is the basis of marriage (5)