—__________.The highest temperature yesterday was 32°C,but it's just 18°C today.( )
A:So it is
B:So it does
C:So does it
亚洲的气候特点是____气候显著、____气候分布广.
Today is Friday and____ ____ ____ ____Saturday.
如图所示,两个固定的等量异种电荷,在它们连线的垂直平分线上有a、b、c 三点,则( )
用化学用语表示:(1)2个氧原子____ (2)二氧化碳分子____;(3)氯化铜溶液中所含的离子____ (4)写出氧化铝的化学式并标出各元素的化合价____。