[听力原文]11-15On June 12th, Peter had a surprise when he woke- up in the morning. He found that the floor of his room was flooded. When he looked out of the window, he saw many cars upside down in the street. It was a sad day for Peter’s hometown, which is a mountain city. In the twenty-four hours, nearly seventeen inches of rain fell. Usually about sixteen inches of rain falls in the whole month of June. Tons of mud and rocks crashed down on the houses below. Sixty-four people died in the flood and more than 2,500 people lost their homes. For some time after the flood, helicopters continued to rescue people. Many people sent money and life necessities to the victims of the flood and helped them rebuild their hometown. What is the usual rain falls of the whole month of June in Peter’s hometownIt is about（）