填空题 Directions: Using the information in the text, complete each sentence 6-10, with a word or phrase from the list below. For each sentence(6-10), mark one letter(A-G)on your Answer Sheet. Do not mark any letter twice. A. there are too many reasons behind it B. regulations may affect business operation by increasing the cost C. it is harmful for a government to interfere with economic matters D. the economy of modern industrial nations are difficult to manage E. consumers may give up some bad habits F. economists have to cooperate with businessmen and politicians G. it is hard to predict the economic trend

填空题 By using the word "machine", the author wants to point that 1.

填空题 Out of health consideration, 1 .

填空题 The example of auto emission standards is here used to make it clear that 1.

填空题 It is difficult to explain the onset of economic decline because 1.

填空题 The author believes that, to find efficient ways of keeping economy going, 1 .