己知 ΔABC 中， ∠B 是 ∠A 的2倍， ∠C 比 ∠A 大20°，则 ∠A 等于____.
3＋3=____
6＋1=____
3＋4=____
6＋2=____
4＋3=____
6＋3=____
地球上分布最广、种类最多的植物类群是（ ）
Yesterday, I came across my former classmate, but his name ________ me, which made me embarrassed.
