A:whe
B:until
C:after
D:since
镍氢电池是近年开发出来的可充电电池,它可以取代会产生镉污染的镉镍电池.氢镍电池的总反应式是:12 H2+NiO(OH)=Ni(OH)2据此反应式判断,下列叙述中正确的是( )
— What colour is it?
— It's ____.
He watches football matches __________ TV __________ Sunday morning.