【单选题】Economic models are
A.
created to duplicate reality.
B.
built with assumptions.
C.
usually made of wood and plastic.
D.
useless if they are simple.
【单选题】Economic models are most often tested
A.
using computer simulations.
B.
using data from the distant past.
C.
using data from the real world.
【简答题】任何一个 C 程序有且仅有一个 函数,它是整个程序开始执行的入口。
【单选题】Economic models are
A.
usually made of wood and plastic.
B.
built with assumptions.
C.
useless if they are simple.
D.
created to duplicate reality.
【简答题】一个C程序有且仅有一个 函数,函数体由 括起来。