關於Scientistsarenotsure的百科

•  Scientistsarenotsureaboutthe

• 問題詳情： Scientistsarenotsureaboutthe________ofwateronMars.A.occupation              B.existence                 C.demand                   D.treasure【回答】解析：選B。考查名詞辨析。句意：科學家們還不能...
• 2021-10-028337