Exploring的精選

問題詳情：Exploring________spaceisexciting,yetdangerous.【回答】/space意爲“太空”時是抽象名詞，其前不用冠詞。知識點：冠詞題型：選擇題...

問題詳情：   Exploring________spaceisexciting,yetdangerous.Thereis_______needforbothrobotsandhumansforspaceexploration.A.the;a                  B.a;the               ...