根据耶克斯—多德森定律，最有利于激发学习动机，提高学习效率的是（ ）。

(单选题)One of the important questions they had to consider was ____ (单选题)She is very important to us. We have been prepared to do ___ (单选题)She was a friendly teacher. She spoke to the students ______ (单选题)As a grassroots singer, she reads everything she can ______ (单选题)Everything ______ smoothly, more jobs created for people all (单选题)The old man scarcely cared for anything, ______? (单选题)There are signs ______ restaurants are becoming more popular (单选题)I decided to do a random act of kindness last year. And ____ (单选题)“卓尔不群、特立独行”，是说明具有创造性之人的哪种特征（ ）。 (单选题)《中华人民共和国未成年人保护法》中所指未成年人是（ ）。