Proper timing of fiscal policy is important if the government is to:（）

A. generating revenues from taxes and sales equal to its expenditures.

B. stimulate economic activity during a recession and restrain the economy during an inflationary boom.

C. increasing the supply of loanable funds needed to place downward pressure on the real rate of interest.

以下哪项不是精神自动综合征的表现？（）

A.假性幻觉

B.强制性思维

C.被控制感

D.被害妄想

E.意识障碍