考研英语(二)-12(总分100,考试时间90分钟)Reading ComprehensionAt the prent time, 98 percent of the world energy **es from stored sources, such as fossil fuels or nuclear fuel. Only hydroelectric and wood energy **
Chapter 1 Introduction►Normative economics analyzes( 4 )1.What is.2.What may be.3.What will never be.4.What should be.►What is the most all-pervasive assumption underlying economic theory?