Ⅰ.阅读理解(2017·山西省高三上学期诊断考试)We all have fears.Some of them are reasonable enough(幽闭恐惧症)．or“fear”，is the term health experts use to describe these unreasonable mental states of anxiety.People who have claustrophobia feel anxious or nervous when they are in elevators，cars，or even large rooms.Their response，in severe cases，is to panic.They may end up shaking，sweating，hyperventilating (呼吸急促)der threatening.Unfortunately，having an anxiety or panic attack confirms that person’s fear，and they begin to avoid the objects or situations which bring on their discomfort.

　　The good news is that all kinds of phobias can be treated.Since the fear is not sensible，those suffering phobias can be helped to overcome them.The hardest step on the road to recovery is the first.The realization that a phobia is unreasonable leads to further anxiety.Support and encouragement from family，friends，and colleagues to seek advice is of great help.Techniques for treatment include flooding，which exposes the person to the source of their anxiety in a controlled situation，and counter­conditioning，using self­relaxation methods to get through anxiety attacks.In the most severe cases，these techniques may be accomplished by medicines.People being treated can get over their fear in eight to ten weeks.

　　There is no good reason to live in constant fear.If you have a phobia，seek medical advice and treatment.If you know someone with a phobia，be supportive.Fear is sometimes a necessary part of the human experience，but unreasonable fear is not.

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