They have no paper_______.
A:to write
B:to write with
C:write on
D:to write on
①32+____〈40
②____-25〈35
③____+24〈30
羊年除夕当日微信红包收发总量达80.8亿个.其中80.8亿用科学记数法可表示为( )
下列关于四幅山地垂直自然带带谱示意图的正确叙述为( )