Judging from the context, the phrase "hand-to-mouth" (Line 2, Para. 5) most probably means______.
A. adventurous
B. unhappy
C. wandering
D. unstable
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The point of similarity between a complex human society and a complex bee society is______.
A. the division of labor
B. the use of fire
C. the development of industry
D. the development of a written language
Which hotel is the woman staying？
A. Capitol Hotel
B. Hilton Hotel
C. Pamela Hotel
Industrial gerontology is concerned with______.
A. how to mange older workforce
B. finding out how productive older workers can be
C. how to meet the challenge of the future
D. finding out what kind of people can stay after the retirement age
在SQL Servet 2000中，若某数据库的故障还原模型为“完全”(FULL)，则能够对该数据库进行的备份操作是
A. 仅完全备份
B. 仅日志备份
C. 仅完全备份和差异备份
D. 完全备份、差异备份和日志备份
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