As if that was not trouble enough for them, they can now be filmed at work and obliged to attend a showing of their performance in court.

　　Selfridges was the first big London store to install closed-circuit videotape equipment to watch its sales floors. In October last year the store won its first court case for shoplifting using a evidence a videotape clearly showing a couple stealing dresses. It was an important test case which encouraged other stores to install similar equipment.

　　When the balls, called sputniks, first make an appearance in shops, it was widely believed that their only function was to frighten shoplifters. Their somewhat ridiculous appearances, the curious holes and red lights going on and off, certainly make the theory believable.

　　It did not take long, however, for serious shoplifters to start showing suitable respect. Soon after the equipment was in operation at Selfridges, store detective Brian Chadwick was sitting in the control room watching a woman secretly putting bottles of perfume into her bag.

　　"As she turned to go," Chadwick recalled, "she suddenly looked up at the 'sputnik' and stopped. She could not possibly have seen that the camera was trained on her because it is completely hidden, but she must have had a feeling that I was looking at her."

　　"For a moment she paused, but then she returned to counter and started putting everything back. When she had finished, she opened her bag towards the camera to show it was empty and hurried out of the store."

　　57. January is a good month for shoplifters because ________.

　　[A] they don't need to wait for staff to serve them

　　[B] they don't need any previous experience as thieves

　　[C] there are so many people in the store

　　[D] January sales offer wonderful opportunities for them

　　58. The sputniks hanging from the ceiling are intended ________.

　　[A] to watch the most desirable goods [C] to frighten shoplifters by their appearance

　　[B] to make films that can be used as evidence [D] to be used as evidence against shoplifters

　　59. The case last October was important because ________ .

　　[A] the store got the dresses back

　　[B] the equipment was able to frighten shoplifters

　　[C] other shops found out about the equipment

　　[D] the kind of evidence supplied was accepted by court

　　60. The woman stealing perfume ________.

　　[A] guessed what the sputniks were for [C] could see the camera filming her

　　[B] was frightened by its shape [D] knew that the detective had seen her

　　61. The woman's action before leaving the store shows that she ________.

　　[A] was sorry for what she had done

　　[B] was afraid she would be arrested

　　[C]decided she didn't want what she had picked up

　　[D] wanted to prove she had not intended to steal anything