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13...
A on the plane
B at the bank
C at the airport
D at the office
E at the theatre
F at the hotel
G at the customs
H on the bus

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A) regulations B) formations C) rules D) constitutions

A. live B. wait C. talk D. sleep

In analyzing the environmental forces acting on man the author suggests that ________.

A. biological factors are less important to the organism than cultural factors to man
B. man and other animals are modified equally by the environmental forces
C. man is modified by the cultural environment as well as by the natural environment
D. physical and biological factors exert more influence on other organisms than on man

A. Unless B. Once C. If D. Although

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