生理情况下,血液中调节呼吸最重要的因素是
A.O2
B.CO2
C.H+
D.N2
E.NaHCO3
第1题
第2题
Most Americans see themselves as separate (), not as representatives of a family , community or other group.
A. independence
B. customers
C. individuals
D. cultures
第3题
Based on the information in the passage, it can be inferred that the extended family is most likely to be found in agricultural societies because______.
A.agricultural societies are larger than industrial societies
B.agricultural societies have fewer social institutions
C.agricultural societies are stronger than industrial societies
D.extended families are less complex than nuclear families
第4题
A、social structure
B、social values
C、social customs
D、communication
第5题
A、independence
B、cultures
C、customers
D、individuals
第6题
A、independence
B、representatives
C、customers
D、cultures
第7题
A、cultures
B、customers
C、independence
D、individuals
第8题
第9题
A、in principle
B、at large
C、in short
D、at all
第10题
A、Firms are likely to be unquoted.
B、Ownership of the business is restricted to a few individuals, typically a family group.
C、Ownership of the business is restricted to one individual.
D、They are not micro businesses that offer a medium for self-employment of their owners.
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