【简答题】There is no question that fewer agers are on the roads in the US. In 1978, 50% of 16-year-olds had got their first driving licence. In 2008, according to the US Transportation Department, it was j...
【单选题】1977—1978 TEXTBOOK INVENTORY FOR SCHOOLS X AND Y BY YEAR OF PURCHASE (as a percent of the 1977 — 1978 inventory) The following 3 question refer to the data above. How many of the inventoried textbooks...