题目

阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。 At the age of 14, Harvey Bay teenager Mark Farrell took a dive into a swimming pool that would 1 his life forever. I jumped into the pool and broke my 2, he says. It's a very unusual story 3I jumped into the deep end, not the shallow end where most spinal (脊柱的)4 occur. Mark has been in a wheelchair ever since and now, at 27, is very calm about any 5 life might throw at him. In fact, he finds it 6 to name any challenge. I just live my life and 7 it day by day,如图甲所示，敲响的音叉接触水面能溅起水花，说明声音是由于物体的    产生的；如图乙，鱼儿能听见拍手声，说明    可以传播声音．