A:2SO2(g)+O2(g)2SO3(g)△H<0
B:4NH3(g)+5O2(g)4NO(g)+6H2O(g) △H<0
C:H2(g)+I2(g)2HI(g)△H>0
D:C(s)+H2O(g)CO(g)+H2(g)△H>0
Last year the teacher told us that the Earth ____ (go) around the Sun.
“人有多大胆,地有多大产”。与这个口号相关的事件是( )
(结果精确到个位,参考数据: 2 ≈1.4, 3 ≈1.7)