【单选题】在绿藻门的下述特征中, 选出与高等植物相同的一个特征:
【简答题】肾小管和集合管主要分泌( )、( )、( )。
【判断题】'Meanwhile' is a time adverbial that is commonly used in academic writing.
【判断题】Transiton "three years later" is commonly used to signal shifts in time.
【判断题】Transiton "now and finally" is commonly used to signal shifts in time.