【判断题】 纤维和石细胞属于植物组织中的机械组织,纤维属于厚角组织而石细胞属于厚壁组织。
【多选题】海运情况下,凭保证书提货后,收货人应( )
【单选题】The hosts apologized for ______ that some of their guests might be vegetarians.
C.
having not been considering
【简答题】Some
guests might just sit in ___________, chatting
over ____________.
【多选题】在海运情况下,凭保证书提货后,收货人应( )。