一、20个英文单词
1，superb：adj.极好的，壮丽的，卓越的
Her piano performance is superb.
2，patch：n.补丁，眼罩，斑点；v.打补丁，修补
I tore a hole in my pants, so I sewed a patch over it.
3，undo：v.松开，解开，取消
At the end of the day, the man undoes his tie.
4，array：n.一大批，一大群；v.排列，部署
She has an array of colors to choose from.
5，Marxist：adj.马克思主义的；n.马克思主义者
Last semester I took a class on Marxist economics.
6，Age：v.变老，使变老；n.年龄，时代，岁，寿命
As she aged, her skin began to wrinkle.
7，senator：n.参议员
The senator has a strong record of community service.
8，decay：v.腐烂，衰退，腐朽；n.腐烂，衰退，腐败
This apple have decayed on top.
9，recur：v.重新出现，再次发生
The shining smile recurred on her face when she got better.
10，analog：adj.有长短针的，模拟的；n.类似物，模拟
An analog watch utilizes a pointer on a dial rather than digitized numbers.
11，paradigm：n.范例，示范
The picture showed the basic paradigm of house building diagram.
12，diagram：n.图表，图解，示意图
The diagram posted in the center of the bulletin shows how the water cycle works.
13，integrity：n.正直，真诚，完整，完好
The table setting represents integrity.
14，fraction：n.部分，片段，碎片，分数
The biggest fraction of the chart is shown in blue.
15，incorporate：v.包含，使并入
Warm-ups incorporate a wide variety of movements.
16，trail：n.小径，路径，记号；v.拽，跟，落后于，追赶
The cyclist is riding on the forest trail.
17，angel：n.天使，可爱的人，善人，好人，守护神
This is a status of an angel.
18，antique：n.古董，古玩，古物；adj.古代的，古董的，古老的
These coins are antiques.
19，purify：v.使纯净，净化，提纯
The water has been purified before being drunk.
20，salient：adj.突出的，显著的；n.凸角，突出部分
Giraffe’s salient height made them stand out in the grassland.
二、算术知识复习
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