Letter AB Tender System 甲种及乙种换地权益书投标办法
A search for a 3-letter word, like ABC, can be done by searching for AB and BC.
搜索一个3字母的单词，比如abc，可以通过搜索AB和BC来实现。
The results revealed that the color detection task can produce an AB effect whose magnitude and duration were comparable to those produced by letter identification task.
结果发现，对颜色特征的觉察即可产生注意瞬脱效应，其大小及时程与经典的采用字母识别任务的研究获得的注意瞬脱效应相当。
Then we go through the calendar and weather charts. We review over the letter of the week, practice counting together (by 1s, by 5s, or 10s), and do simple patterns with counting bears (AB, AABB).
一起看看日历和天气，复习一下之前学习的字母、数字和归纳分类知识。
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