拉采尔的人地关系理论被称为（）.
A.人地相关论
B.生态论
C.适应论
D.环境决定论
参考答案：D
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city ？（）
A．14
B．16
C．21
D．22
E．27
