题干
You have to leave now_______ you can catch the early bus.
A：so that
B：as soon as
C：because
D：although
答案(点此获取答案解析）
A
You have to leave now_______ you can catch the early bus.
A：so that
B：as soon as
C：because
D：although
2SO3 (g) ，△H ＜ 0 。如图4是某次实验的化学反应速率随时间变化的图象，推断在t1时刻突然变化的原因可能是（ ）
