题干
The plane had already taken off. So he decided ________the G109 Train to Shanghai.
A：take
B：to take
C：taking
D：takes
答案(点此获取答案解析）
B
The plane had already taken off. So he decided ________the G109 Train to Shanghai.
A：take
B：to take
C：taking
D：takes
合成氨气的方法而获得1918年诺贝尔化学奖。现向一密闭容器中充入1 mol N2和3 mol H2，在一定条件下使该反应发生，有关说法正确的是
2NH3
