题干

如图所示,一束光在空气和玻璃的界面上同时发生反射和折射,入射角的度数为____ ,折射角的度数为 ____  ,界面AB____ (选填“左”、“右”)方是空气.

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30°,45°,右

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    The tough economy is bringing new shoppers to the secondhand market.Plato's Closet in Charlotte,NC is a private company,which mainly buys and sells used clothes.While Charlotte has outstanding secondhand stores offering high-end and graceful brands for women,most of their stock applies to adults.Plato's closet targets teens and those in their 20s.

    Plato's Closet,with stores in Matthews and the university area,sells clothes and accessories(装饰品)that are currently popular at about one third the retail(零售)prices.

    The two hottest brands,for buying and selling,are Hollister and Abercrombie & Fitch.Even though the offerings tend to be suitable for young people,there are a variety of shoppers at Plato's Closet of varying ages.Women in their 30s,40s,and older could easily find a purse,jacket or piece of jewelry they like.

    If you are selling

    Unlike higher-end resale stores which usually work on consignment(寄售),Plato's Closet buys on the spot.

    Items can be gently used,but must be in very good condition.

    Clothes should be less than two years old and styles should be the same as those still being sold at the shopping center.

    There is no negotiation;prices are set company-wide.If what you sell amounts to $30 or less,they'll give you cash.More than that,you'll get a Visa cash card.

    Secondhand success

    Don't get discouraged if you can't find something on your first trip.Resale shops are always getting new lists of goods and change their styles with each season.

    Be sure to check each piece carefully before buying.

    Price comparison

    Jackets: New York & Company black blazer,$12; retail: $37.

    Pants: Express Editor-style pants,$12; retail: $69.90.

    Shoes: Nine West black peep-toe pumps,$12; retail: $89.

    Jewelry: Necklaces,$3-$5; retail: $18-$30.