【简答题】CSS 类选择器和 id 选择器的区别是什么?
【单选题】《道德经》67章:“我有三宝持而保之∶一曰慈, 二曰俭,”下一句是( )
【判断题】法国大革命时期,《人权宣言》是当时重要文献。()
【单选题】根据单元顶极学说,在一个气候区,群落演替到最后只会形成一个( )
【判断题】CSS选择器仅有三种,分别是标记选择器、类选择器、ID选择器。
【单选题】听力原文:M: You think young people are given too much nowadays, and that, as a result, they lost respect for their parents and their elders generally. W: I don't think so. My parents never interfe...
B.
They are not respectable.
D.
They are very helpful.
【单选题】CSS的选择器中,用来选择页面上一个特定元素的选择器是: