Questions 6 and 7 are based on the following news from the BBC. At the end of the news item , you will be given l0 seconds to answer each question. Now listen to the news. What’s happening
A．A revolutionary NASA jet was destroyed in its first flight. B．A booster rocket veered out of control and tumbled to the ground. C．A booster rocket was destroyed after it fulfilled the task. D．A revolutionary NASA jet was destroyed after many flights.