47．What is the finding of the study?

　　A. One's heart affects how he feels fear.

　　B. Fear is a result of one's relaxed heartbeat.

　　C. Fear has something to do with one's health.

　　D. One's fast heartbeats are likely to cause fear.

　　48．The study was carried out by analyzing

　　________.

　　A. volunteers' heartbeats when they saw terrible pictures

　　B. the time volunteers saw fearful pictures and their health conditions

　　C. volunteers' reactions to horrible pictures and data from their brain scans

　　D. different pictures shown to volunteers and their heart－brain communication

　　49．Which of the following is closest in meaning to “mechanism” in Paragraph 6?

　　A. Order.

　　B. System.

　　C. Machine.

　　D. Treatment.

　　50．This study may contribute to

　　________．

　　A. treating anxiety and stress better

　　B. explaining the cycle of fear and anxiety

　　C. finding the key to the heart－brain communication

　　D. understanding different fears in our hearts and heads

　　【要点综述】 本文是一篇说明文。文章说明了人的恐惧与心脏和大脑的关系。

　　47．A　细节理解题。根据第四段 “The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed.Thus our hearts can also affect what we see and what we don't see—and guide whether we see fear.” 可知一个人的心脏影响一个人的恐惧程度。故选A。

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