看图，读下面的短文，指出你所在的位置。

      You stand at A. You go straight, then turn left at the traffic lights. Go straight on the street. Turn right at

the bookstore. Walk east for one minute. What's on your left?

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PVPP是聚乙烯聚吡咯烷酮的英文缩写名称，它能吸附高分子蛋白质和凝固性氮，提高啤酒的非生物稳定性。