题目内容
Product presentation is not important before customers show interested in product.
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If customers have expressed their need for your product, there is no need to introduce the product anymore.
If necessary, let the customers use the new product personally.
You should use words such as “comfortable”, “attractive” todescribe the features of the product.
从（）世纪初期兴起的社会主义思潮算起，社会主义到现在已经有五百年的历史。
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