Hi everyone! Good news. A book sale.____will people drive cars in space? Will you meet traffic ____? You'll get answers from our books. Are ____ interesting for you? They can do heavy work. You ____enjoy short working hours. We've got some storybooks about them. What's the best way to buy products at very good prices? Our books will tell you something about online ____? 

    Welcome to the playground this Saturday.

    Have a nice day!

“十个淘宝九个刷”，大量的淘宝新店因既没有足够的广告推广预算，又没有实际的销量作为支撑，只能靠刷单吸引买主。从整体上看，刷单会抬高淘宝网的推广成本，使得不刷单的新店生存更加困难，也让淘宝网的推荐机制失效，影响了交易的公平性。这说明（  ）

①生产厂家必须树立良好的信誉和形象      ②诚信缺失将导致市场秩序混乱

③要发挥市场在资源配置中的决定性作用    ④建立失信惩戒制度有必要性