VIP Class Notes (Nemo)

http://www.noi.cn/newsview.html?id=968&hash=1200CF&type=99&province=%E4%B8%8A%E6%B5%B7

https://www.geeksforgeeks.org/binary-tree-data-structure/

Binary Trees Quiz

https://www.geeksforgeeks.org/data-structure-gq/binary-trees-gq/

Vocabulary

How are you doing? how was your holiday?
Good, thanks-it was fun.
what/how about you?

in formation
Activities that are done in formation are done in a pattern by a number of people, vehicles, etc. moving together.
编队，以…队形
marching in close formation
以紧凑的队形前进

theoretical and practical knowledge
理论与实践知识

mechanical computer-机械计算机

electromechanical computer-机电计算机

motherboard (n): the main printed circuit board that contains the CPU of a computer and makes it possible for the other parts of a computer to communicate with each other
主板，装配板
It’s a machine with a CPU, a motherboard and circuits.
它是一个有中央处理器、板和电路的机器。

二叉树
binary tree

equation (n): a mathematical statement in which you show that two amounts are equal using mathematical symbols
方程式；等式
In the equation 3x – 3 = 15,  x = 6.
在方程式3x-3=15中，x=6。

procrastinate (v):
to keep delaying something that must be done, often because it is unpleasant or boring
拖延，耽搁
I know I’ve got to deal with the problem at some point – I’m just procrastinating.
我知道迟早得解决这个问题——我只是在拖延时间。