“延迟满足”实验所考查的是儿童（）的发展。
A．深度知觉
B．依恋关系
C．自我控制
D．同伴关系
参考答案：C
—What do you plan to do on the ___________ May Day holiday?
—I have no idea. Probably, I will spend it by doing many papers.
A．three-day
B．three-days
C．three days
D．three day’s
