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unit，16，scientists，at，work，per 共『1』篇, 分1页显示 当前页号:1 | |
Period 4 Word Study
Teaching aims:
1. To consolidate the words and useful expressions learnt in this unit.
2. To help the students use the key words and phrases with proficiently.
Key and difficult points:
To make the students know the usage of the key words and phrases.
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