40번. 다음 글의 내용을 한 문장으로 요약하고자 한다. 빈칸 (A), (B)에 들어갈 말로 가장 적절한 것은?
Martin Grunwald, leader of the Haptic Research Laboratory at the University of Leipzig, feels psychologists do not pay nearly enough attention to our sense of touch. With this in mind, he researched the way people spontaneously touch their faces. We all do it. You might be doing it right now while reading this. These movements are not for communication and, in most cases, we are not even aware of them. But that does not mean they serve no purpose, as Grunwald discovered. He measured the brain activity of test subjects while they tried to remember a sequence of haptic stimuli for five minutes. When he disturbed them with unpleasant noises, the subjects dramatically increased the rate at which they touched their faces. When the noises upset the rhythm of their brains and threatened to disrupt the subjects’ concentration, self-touch helped them get their concentration back on track. To put it another way: self-touch grounded their minds.
Even though touching our own faces seems to serve no special purpose, the research showed that the rate of subjects’ self-touch ___(A)___ in accordance with the exposure to unpleasant noises, and this behavior helped their minds stay ___(B)___.
① escalated …… focused
② escalated …… creative
③ varied …… hopeful
④ normalized …… keen
⑤ normalized …… calm
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