2018年公共英语考试pets4级写作精选短语积累(2)

 　door-to-door selling

　　a method of presenting and selling products or services in which a salesperson goes to the residences or homes of potential buyers, knocking on their doors to solicit business

　　EXAMPLE:

　　"Many homeowners dislike door-to-door selling and consider it to be disturbing to their privacy."

　　feasibility test

　　(noun)

　　a procedure or basis for evaluation or assessment to see if something is capable of being accomplished or brought about, or is possible

　　EXAMPLE:

　　"A business will often do a feasibility test on a product before spending money to market it to consumers."