高等植物
参考答案:
苔藓、蕨类和种子植物有根、茎、叶分化,生殖细胞是多细胞,合子在体内发育成胚,因此合称为高等植物或有胚植物。
Once you________ it, it's a piece of cake! It's nothing to worry about.
A.watch out for
B.get the hang of
C.get rid of
D.get away with
麻疹诊断要点