Questions 6 to 8 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each question.
Now listen to the news. The Bush and Kerry campaigns exchanged attacks regarding ______.

A．the Aleuts’ loyalty to their language and American failure to understand it
B．Russian and United States’ treatment of Alaskan inhabitants both before and after 1867
C．how the Czarist Russian occupation of Alaska created a written language for the Aleuts
D．United States government attempts to persuade the Aleuts to use English as a second language

A．questioning the assumption behind certain experiments involving children under the age of 15
B．describing the new scientific findings about high blood pressure and suggesting some implications
C．describing two different methods for studying the causes of high blood pressure
D．revealing a discrepancy between the findings of epidemiological studies and laboratory studies on essential hypertension