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  3. You arc going to read a list of headings and a text about panic attacks. Choose the most suitable heading from the list A~G for

You arc going to read a list of headings and a text about panic attacks. Choose the most suitable heading from the list A~G for

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问题     You arc going to read a list of headings and a text about panic attacks. Choose the most suitable heading from the list A~G for each numbered paragraph(1~5). There are two extra headings which you do not need to use.
    [A]What is panic disorder?
    [B]Does it run in families?
    [C]How can I cope?
    [D]What is the best therapy?
    [E]What causes a panic attack?
    [F]How to diagnose panic attack?
    [G]What is a panic attack?
    It can come out of nowhere. You’re shopping for groceries or buckling your seat belt when suddenly your muscles contract and your heart begins to pound.
    Panic attacks can be both bewildering and terrifying, but they’re not unusual. An estimated 2. 4 million people experience one every year. It may begin as tightness in the chest, shortness of breath or a galloping heartbeat. Many sufferers believe they are having a heart attack and rush to the emergency room.
    Prevalence rates have been on the upswing since the 1950s, although many experts believe what seems like a trend is simply better diagnosis.
    【C1】______
    More than a feeling of anxiety, a panic attack produces distinctive physical symptoms. Each person experiences panic differently, but most people report intense fear accompanied by bodily sensations that can range from a racing heart to nausea and dizziness. Panic can come on suddenly or slowly and usually lasts no more than 20 minutes at its peak.
    【C2】______
    Scientists believe panic attacks stem from the brain’s "fight or flight" system gone awry, often ignited by stress or a traumatic event. In our high-octane society, that response can kick in with no real threat in sight or after the source of stress is long gone.
    Research suggests that chronic panic sufferers may be easily flummoxed by their bodily sensations. Someone vulnerable to panic might interpret a rapid heartbeat as a heart attack. If fear overwhelms her, the symptoms intensify in a vicious cycle.
    【C3】______
    Vulnerability to anxiety may have a biological basis. If a parent or sibling has panic attacks, a person’s risk increases by about sixfold. A Yale study found that panic attack sufferers had fewer serotonin receptors in their brains, while other studies suggest those with anxiety may have overly sensitive "suffocation alarm systems", which delect a shortage of oxygen even under normal   conditions.
    【C4】______
    Panic attacks are so frightening that sufferers will do just about anything to avoid another. That may mean staying away from situations associated with anxiety. Someone who once panicked on an airplane might decide not to fly. But the fear often extends to other settings; the plane phobic might start to dread cars and buses as well.
    People with full-blown panic disorder, in which attacks are a frequent problem, feel constantly vulnerable, which forces them to be vigilant.
    Only about a third of people who get occasional panic attacks will go on to develop panic disorder. Even though men and women report the attacks with equal frequency, women are twice as likely to get the disorder.
    【C5】______
    Antidepressant medication may help alleviate panic. However, cognitive-behavioral therapy may work even better; researchers estimate that up to 80 percent of panic sufferers can be helped by psychotherapy alone.
    Therapists often treat panic by exposing the patient to feared settings of increasing intensity. Exposure therapy can also include exposure to the physical sensations of panic spinning clients in circles to make them dizzy, having them inhale carbon dioxide or breathe through a straw or jog to raise their heart rates. Once clients learn that those feelings do not signal impending doom, they can better withstand panic - and eventually prevent it altogether.
【C1】
选项
答案G
解析 该段的主要内容是介绍惊恐症的基本症状和持续时间。段首指出惊恐症会感到焦虑，并且大多数人会感到恐惧伴随身体上的反应，从心悸到恶心，头晕等。并且惊恐症的出现可能是缓慢的或者突然的，持续时间不超过20分钟。由此可以判定本语段主要是介绍什么是惊恐症，故G是最佳答案。
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