一、学短语，记短语
1.abide by(=be faithful to ; obey vt)忠于；遵守。
2.be absent from…缺席
3.absence of mind(=being absent-minded) 心不在焉
4.be absorbed in 全神贯注于…(= be engrossed in ; be lost in ; be rapt in ; be buried in; be concentrated on ; be focused on ; be centered on)[engross vt. 使全神贯注,rapt adj.全神贯注的]
5.(be) abundant in(=be rich in; be well supplied with) 富于,富有

二、练短语、用短语（用上面5个短语的适当形式填在下面使句意通顺，请注意时态，语态）
1.Plese feel assured we will ( ) our promise.
2.He ( ) school.
3.( ) in chemical experiments may cause a serious accident.
4.Newton ( ) his laboratory work that he often forgot to eat.
5.Birds ( ) the tall vegetation by the canal.

答案揭晓：

key:1.abide by 2.is absent from 3.Absence of mind4.was absorbed in 5. are abundant in