【简答题】For David's story, please pick out the sentences that describe girls.
【单选题】下列关于园林植物花期的描述正确的是( )
【简答题】A.Teach David's class while he is absent. B.Give Professor Winston the key to David's office. C.Leave a message on the board in David's classroom. D.Bring David the homework that was due today.
【单选题】TRIZ法通过对百万件专利的详细研究,提出()个通用工程参数来描述技术矛盾。
【简答题】For David's story, please pick out the comparative form of adjectives.
【单选题】多年生水生草本,地下部有根茎平生或直生,叶浮于水面,圆形或卵形,基部心形,花大而美丽,花瓣8~15片,花期7~9月的花是()。