—_______ do you know so much about the cartoon?
—I got the information by surfing the Internet.
A:How
B:What
C:Which
D:Where
①FeS2 煅烧→ SO3 H2O→ H2SO4
②Al2O3 NaOH(aq)→ NaAlO2(aq) CO2→ Al(OH)3
③NaCl(aq) 电解→ Na O2→ Na2O2
④Fe 稀硫酸→ FeSO4(aq) NaOH(aq)→ Fe(OH)2 空气中灼烧→ Fe2O3
⑤海水 →提取NaCl蒸发 母液 →热空气Cl2 粗溴 Na2CO3(aq)→ NaBrO3NaBr H2SO4(aq)→ Br2.
有关大洲和大洋的叙述正确的是( )
鲁班是我国一位伟大的发明家,他发明了锯。( )