A:2H2(g)+ O2(g)=2H2O(1);△H=-285.8kJ/mol
B:CH4(g)+2 O2(g)=CO2(g)+2H2O(1);△H=-890.3kJ/mol
C:CH4(g)+2 O2(g)=CO2(g)+2H2O(g);△H=-890.3kJ/mol
D:CH4(g)+2O2(g)=CO2(g)+2H2O(1);△H=+890.3kJ/mol
I live near the station. It's only about five walk.
①周围一片________,我趴岩石上,神情______,害怕和疲劳已经让我麻木。
②我向下迈出了最后一步,然后踩到了底部凌乱的岩石,扑进了爸爸_____的臂弯里。