Questions 6 and 7 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question. According to the news, when did America’s first encounter with a campus massacre occur

A．the US economy is very dependent upon ever-increasing amounts of debt
B．the amount of borrowing today in the US for automobiles and housing is getting bigger and bigger
C．one of the main reasons for the depreciation of dollar is the ever increasing amounts of US domestic debts
D．the US federal government is creating credit because the people have already showed unwillingness to be indebted