请将下列植物类群与其特征及代表植物一一对应起来
A.蕨类植物____a.有根、茎、叶的分化,以种子繁殖____①贯众
B.裸子植物____b.没有根、茎、叶的分化____②紫菜
C.苔藓植物____c.有茎和叶的分化,但没有真正的根____③地钱
D.藻类植物____d.有根、茎、叶的分化,以孢子繁殖____④银杏
——Why do you get up so early in the morning?—— I make it a ______ to get up before 7am to read English.
She's not strong enough ____________ walking up mountains.
Lily usually starts the day __________ breakfast.