| Unit?1 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?2 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?3 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?4 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?5 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?6 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading?Passage?Translation Unit?7 ??Part?Ⅰ??Understanding?and?Learning ??????Section?A ??????Section?B ??Part?Ⅱ??Key?to?Exercises ??Part?Ⅲ?Reading |
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