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Blp (berry, levinsohn, and pakes)需求估计模型 blp模型是由berry、levinsohn和pakes三位作者在1995年提出 ...
It is also a superlative, like greatest, or highest, so just as you would use it as an adjective to show that something. ...
What was the best choice for this purpose? Which one is the best is obviously a question format, so it makes sense that ...
The word best is an adjective, and adjectives do not take articles by themselves. What was the best choice for this purp ...
