第11至15題為題組
Mystery shoppers are paid consumers who are hired to shop in stores and collect data. They are sent to a wide variety of service-based businesses， including stores， restaurants， and banks—potentially anywhere customers are served. Sometimes referred to as secret shoppers， mystery shoppers ______ regular customers to purchase items， eat in restaurants， make inquiries， or return items.
(A) call for
(B) pose as
(C) attend to
(D) engage in
第11至15題為題組
When evaluating a business， mystery shoppers have to follow certain standard procedures to avoid ______.
(A) keen competitions
(B) financial hardship
(C) racial conflicts
(D) personal bias
第11至15題為題組
With the data they collect， mystery shoppers can identify areas for ______ and thereby help enhance the quality of products and services.
(A) distribution
(B) expectation
(C) improvement
(D) management
第16至20題為題組
During the second Industrial Age， people toiled at unusual hours in mines or factories and often had to get up for work early in the morning. They ______ alarm clocks because adjustable alarms had been invented by the mid-19th century.
(A) must be using
(B) could have used
(C) had hardly used
(D) were mostly using
第16至20題為題組
______ sticks or pea shooters， the human alarms would tour the streets， tap on windows， or blast them with dried peas， trying to wake paying customers in time for work.
(A) Aimed at
(B) Trained for
(C) Equipped with
(D) Exhausted by
第16至20題為題組
Whether they wielded rods or pea shooters， knockers-up became ______ throughout the United Kingdom.
(A) familiar presences
(B) distant memories
(C) vague images
(D) public eyesores
第16至20題為題組
While the practice continued in some parts of the country until the 1970s， it ______ as alarm clocks became more widespread and affordable.
(A) remained
(B) dismissed
(C) revised
(D) declined
