A．在于 B．分解
C．扮演……角色 D．几乎是 E．投射；显示
F．随着……变化 G．有点；或多或少 H．逐渐被遗忘
I．到目前为止 J．置……于不顾 During the day the Sun breaks down some of the
oxygen molecules to single oxygen atoms, and these reacting with the oxygen
molecules that have not been dissociated, form ozone.