What is the implication of the first sentence in the first paragraph？
A. Working people prefer to work in the big corporations.
B. In the past, individuals and businesses are two entities as employee and employer.
C. Labor Day is always celebrated by both workers and companies.
D. The supporters of Labor Day are usually appreciated and accepted by big corporations.
Based on the information in the passage, all of the following can be concluded about extended and nuclear family structures EXCEPT that______.
A. the nuclear family generally is smaller than the extended family
B. the family is more important in primitive societies than in industrialized societies
C. the extended family structure can not survive in an industrial society
D. the nuclear family generally is not as strong a source of cultural and societal interaction as the extended family
若αG、αT和αTR分别代表政府购买乘数、税收乘数和政府转移支付乘数，则()。
A. αT＞αTR＞αG
B. αG＞αT＞αTR
C. αTR＞αG＞αT
D. αG＞αTR＞αT
Where did "suicide terrorism" first appear？
A. Israel.
B. Algeria.
C. Kuwait.
D. North America.
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