17. In a small open economy, a loose fiscal policy coupled with an increase in import tariff will cause domestic currency to
(A) increase.
(B) decrease.
(C) remain the same.
(D) change in an uncertain direction.

13. If the Federal Reserve accommodates an adverse supply shock, (A) infation expectations may rise which shifts the short-run Phillips curve shifts right. (B) infation expectations may rise which shifts the short-run Phillips curve shifts left. (C) infation expectations may fall which shifts the short-run Phillips curve shifts right. (D) infation expectations may fall which shifts the short-run Phillips curve shifts left.

14. If a local bank decides to convert some of its U.S. Treasury securities into cash, which it will hold in its vault, what impact will this have on the bank's balance sheet? (A) Reserves would increase, liabilities would stay the same, and owner's equity would decrease. (B) Reserves would increase, lhabilities would stay the same, and owner's equity would increase. (C) Reserves would decrease, liabilities would decrease, and owner's equity would decrease. (D) Reserves would decrease, liabilities would stay the same, and owner's equity would decrease.

15. Matilda just graduated from college. In order to devote all her efforts to college, she didn't hold a job. She is going to tour around the country on her motorcycle for a month before she starts looking for work. Other things the same, the unemployment rate (A) increases, and the labor-force participation rate decreases. (B) and the labor-force participation rate both increase. (C) increases, and the labor-force participation rate is unaffected. (D) and the labor-force participation rate are both unaffected.

16. In an IS-LM model, if the governmentadopts a loose monetary policy and a tight fiscal policy simultaneously, (A) interest rate increases, while output stays the same. (B) interest rate stays the same, while output decrcases. (C) interest rate change is uncertain, while output increases. (D) interest rate decreases, while output changes is uncertain.

18. Assuming, in a two-period model, that the nominal wage rate increases from $10/hour to $15/hour； the expected price level increases from I to 3； and the actual price level increases from 4 to 5, we can deduce that (A) nominal wage rate decreases. (B) expected real wage rate increases. (C) actual real wage rate increases. (D) All of the above are correct. 

19. Suppose the objective function of a government is described by W(u,π) = (u + 5π2) where u is the unemployrent rate, and m is the infation rate, while the Phillips curve is described by is the expected in fation rate, and u is the natural rate of unemployment. Which of the following infation rate is a credible promise that the government can make? (A) 0% (B) 2% (C)5% (D) 10%

20. If the central bank announces a decrease in money supply while keeping the actual money supply unchanged, the rational expectations theory would predict (A) both output and price remain unchanged. (B) output increases, while price decreases. (C) output decreases, while price increases. (D) output remains unchanged, while price decreases. 

1.將力常數k的彈簧掛在天花板上,在其下方懸掛質量m的木塊。當木地達成平衡時,再將木塊下拉R距離後釋放,則木塊通過平衡點上方0.5R處的速率為(A)(B)(C)(D)(E)0

2.如圖所示,為一圓形山丘,A點為山丘的最高點,此圓形山丘的的曲率半徑為50m。今有一滑雪者要越過此山丘，假設空氣阻力及滑雪道的摩擦力皆可忽略不計，A點與B 點的高度差5m。若滑雪者由B點出發,通過A點時恰能水平飛出，則他在B點的速度應為多少? (g=10m/2) (A) (B) (C)(D)(E)

3.如圖所示,一均質質量m,長度為L的繩跨過光滑釘子兩邊對齊後放置,將A拉下少許 ,即A端漸漸滑下至B恰離開釘子時,繩的速度為何?(A)(B)(C)(D)(E)