英语每日一练

　　First, use the choices provided in the box to complete the phrases. Second, use the completed phrases to fill in the blanks of the text. Mark your answer on the Answer Sheet.

　　A.known

　　B. idea

　　C. feel

　　Phrases:

　　A. but it may 1 like forever

　　B. a person may have no 2 what is wrong

　　C. what is 3 as panic disorder

　　A panic attack is a sudden feeling of terror. Usually it does not last long, 4 . The cause can be something as normally uneventful as driving over a bridge or flying in an airplane. And it can happen even if the person has driven over many bridges or flown many times before. A fast heartbeat. Sweaty hands. Difficulty breathing. A lightheaded feeling. At first 5 . But these can all be signs of 6 . The first appearance usually is between the ages of eighteen and twenty-four. In some cases it develops after a tragedy, like the death of a loved one, or some other difficult situation.

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　　正确答案

　　1.【答案】C

　　【解析】空格处缺少谓语，且空格前面为 may，故选 C 项。

　　2.【答案】B

　　【解析】 have no idea 为正确搭配，意思是“不知道，不清楚”。

　　3.【答案】 A

　　【解析】空格前面为 be 动词 is，三个选项中只有 known 符合， be known as 意思是“被认为是”，故选 A 项。

　　4. 【答案】 A

　　【解析】空格部分独立存在，且空格前面为一个完整的句子，结合该语意“这种感觉通常不会持续很久，但可能感觉会很漫长”，故选A项。

　　5. 【答案】 B

　　【解析】空格部分应填入一个完整的句子，结合该语意“起初人们可能完全不知道是哪里出了问题”， 故选 B 项。

　　6. 【答案】 C

　　【解析】空格前面为介词 of，结合该语意“这些都是恐慌症的症状”，故选 C项。