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The limitation of the trends method is the same as the persi
The limitation of the trends method is the same as the persistence method in tha
根据以下材料，回答题。The most important advances made by mankind come
根据以下材料，回答题。The most important advances made by mankind come from __________．
The invention of the fridge has not provided __________．
The invention of the fridge has not provided __________．
A writer's attempts to reproduce folk speech can be an asset
A writer's attempts to reproduce folk speech can be an asset to the historian of
Generally，a material with a sour taste，such as vinegar or le
Generally，a material with a sour taste，such as vinegar or lemon juice，contains a