凯恩斯论述了投资对经济增长具有（）。
A.推动效用
B.加速效用
C.乘数效用
D.挤出效用
参考答案：C
[国以民为本，民以食为本，衣食以农桑为本]这句话是（）说的。
You are handling a mooring line and are instructed to Check the line.What should you do（）.
A.Ensure the bight is not fouled by taking up slack
B.Pay out the line smartly and keep it free for running
C.Secure the line by adding more turns
D.Surge the line so it maintains a strain without parting
