【简答题】( 1 ) The text begins with the key-slot 1 ( 轶事,趣闻,奇事 ) . Various ways of topic introduction( 介绍文章主题的方法 ) There are several ways to introduce a theme. 1 Stating the topic directly. 2 Posing a ques...
【多选题】Which sentences of the followings are right about a binary tree's characterization: ( There are more than one correct answers ) 下列关于二叉树性质的说法正确的有:(多选)
A.
If a complete binary tree is a full binary tree, it will be possible that leaf nodes is not on the bottom level . 当一棵完全二叉树是满二叉树时,叶子结点不一定集中在最下面一层。
B.
The amount of external null nodes in a binary tree with at least one node equals to its amount of nodes plus 1. 一棵非空二叉树的为空的外部结点数目等于其结点数加 1。
C.
All degrees of nodes in a full binary tree are 2. 满二叉树的所有结点的度均为 2。
D.
The amount of nodes of a full binary tree with at least one node must be odd. 满二叉树的非空结点个数一定为奇数个。
【简答题】根据句意及首字母或汉语提示完成单词。 1. I don't like summer, because it's too h_____. 2. There are lots of beautiful b_____ in Hainan Island. 3. —How is the w_____ today?—It's cloudy. 4. _____ (冬天) comes, can spr...
【单选题】“There are many wonderful stories to tell about the places I visited and the people I met.”译为“我访问过一些地方,遇到不少人,要谈起来,奇妙的事可多着呢。”可看出汉语与英语相比,具有__________的特点。
【简答题】Archery(射箭) may be the oldest sport in the world. There are prehistoric drawings which show that bows and arrows were used 20 000 years ago. In early times, animals were always hunted and killed with ...