【单选题】He waited until the volcano became quiet. He waited ________ quiet.
A.
to the volcano to become
D.
for the volcano to become
【单选题】()于 1903 年完成《教育心理学》一书,标志着教育心理学作为独立学科发展?
【单选题】公有云计算和私有云计算架构基础架构的基石是()
【简答题】翻译题:In a volcano,what looks like a process of destruction to us as human beings is really the process of island building and growth.