2019年全国英语等级考试pets4四级口语必备短语(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."
feel the pinch
a financially difficult, tight, strained, or squeezed circumstance or situation
EXAMPLE：
"Experiencing little demand for its products, the company began to feel the pinch."
file thirteen
any container to discard or throw away unwanted paperwork; in an office setting a container for rubbish; the wastebasket
EXAMPLE：
"The salesperson crumpled the cancelled order and tossed it into file thirteen."
fat cat
a wealthy and privileged person
EXAMPLE：
"More than one fat cat has been seen visiting the
offices of political candidates."