You won't want to visit any other mountain if you have seen Wu yue, but you won't wish to see even Wu yue _______returning from Mount Huangshan.
A:about
B:before
C:since
D:after
左心房、左心室、肺静脉中流的是____血.
小明爸爸是一位旅行爱好者,最近从网上发来一张旅行时拍摄的照片,据此回答下题.
阅读下列各小题,根据汉语及句末括号内的动词提示,用相关的动词短语完成句子(每空最多不超过四个词)。