单项选择题

Which of the following terms is EXCLUDED from the scientists’ Demographic Research()

A. Statistics of births.
B. Statistics of deaths.
C. Statistics of breast feeding.
D. Statistics of diseases.

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写一篇题为“Take Job or Continue Graduate Education”的文章。要求分三段，不少于100个单词。 内容包括： (1)有些学生大学一毕业就参加工作； (2)另外一部分学生毕业后继续攻读学位； (3)我的看法……
单项选择题
Modern industry must have developed()

A. before the Middle Ages     
B. in Greece or Rome
C. around the 19th century     
D. machines to take tests
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