在进行栈的插入操作时，首先需要检查栈的状态是？

A university is revising its academic writing guidelines. The current guidelines emphasize the use of complex sentence structures and advanced vocabulary to demonstrate academic sophistication. Which of the following changes to the guidelines is MOST likely to enhance clarity and accessibility for a wider range of students?

在下列句子中，哪个词起到了连接词的作用？'我既喜欢跑步，也喜欢游泳。'

在移动互联时代，以下哪种数据生成方式不需要人的意识参与？

以下哪项是关于创新的说法正确？