OPs波下降或消失常见的眼病是：（）
A.视网膜脉络膜炎
B.视网膜色素变性
C.视网膜脱离
D.糖尿病视网膜病变
E.玻璃体出血
参考答案：D
Which of the following is least likely to be cited as a limitation of discretionary fiscal policy stabilizers（）
A. Changes in the business cycle are difficult to predict.
B. Taxes paid by households increase as incomes rise.
C. Legal changes are delayed while legislators debate fiscal policy issues.
墨家学派与儒家学派并称为（）。
A、隐学
B、古学
C、张学
D、显学
