题目内容
It's difficult to get the young to listen to anything you say these days．They have shut themselves off from the world with earplugs attached to their personal stereos such as MP3 players. And with more than three million iPods and MP3 players sold in Britain every year．it's not just the young who have been in the personal stereo habit．But at what risk is our hearing?
When MP3 players and iPods are turned to full volume，the sound can reach 104 dB (分贝)，the maximum(最大值)allowed by EU safety standards but almost as loud as a pneumatic drill(气钻)(110dB)
The advice from scientists is to turn down the volume and limit use of such machines to an hour a day；the producers also recommend taking regular breaks to give the ears a rest．Yet research by the Royal National institute for the Deaf (RNID)showed that 39 percent of the young don't practice safe listening. The worry is that they could be creating problems later in life．
People with good hearing have tiny hair cells that line the inner ear and transmit(传递) signals to the brain，which it interprets as sound. When repeatedly exposed to uncomfortably loud noises(loud is defined as above 80 dB)，including music through headphones and at concerts，those hair cells require a rush of blood or oxygen，otherwise“they effectively die”. Temporary(临时的)hearing loss or tinnitus(ringing in the ears) is a sign that hair cells are trying to recover，but over time recovery becomes impossible．
At UK cinemas，sound levels of 110dB have been recorded．Music played in nightclubs is so loud as to be comparable，in some cases，to standing two feet away from an aeroplane as it takes off(110dB)．The level at which pain starts to happen for sound is 140dB．
1．When you use MP3 player，you should do the following except
A．turn it to the volume B．take regular breaks
C．use it less than an hour a day D．turn down the volume
2．Which of the following is NOT true?
A．Young people like their personal stereos such as MP3 players．
B．More than three million iPods and MP3 players are sold in Britain every year．
C．It is no doubt that sonic British young people’ s hearing is at risk．
D．More than 50 percent of the British young people don't practice safe listening.
3．The highest safe sound shouldn't be louder than
A．80db B．140db C．104db D．110db
4．What would be the best title for the passage?
A．A Warning That Fails on Deaf Ears B．MP3 Players——Hearing Killers
C．The Causes of Hearing Loss D．Hair Cells Suffering from Loud Noises
ADCA
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| Once there was a very brilliant, creative and educated man.He gained much __1__ while traveling throughout the world.Unfortunately he lost his legs and left arm in a tragic accident, leaving only a finger and thumb on his right hand.He became so __2__ that he was afraid he would spend his life __3__ and would no longer be able to use his life in a(n)__4__ way. One day, he remembered how he had always loved getting __5__.He realized that he still had partial __6__ of his right hand and could write with __7__.Then, he had an idea, "Why not write to other people who need encouragement?" He __8__ where he could find those who could be encouraged if they read his letters.He thought of people in __9__.Many of them had hope of regaining their __10__.Others would keep feeling depressed and remain put away for the rest of their lives.He decided that he must try to __11__ them.So he wrote to a prison ministry about sending letters to the prisoners.The prison minister replied that writing to the prisoners would be __12__.However, it would be against prison rules for the prisoners to write back. __13__ with the intention, the man began sending __14__ messages of God's love, hope, strength, and encouragement.He wrote twice a week, testing his strength and ability to the __15__.He poured his heart and soul into his words,  __16__ his experience, sense of humor, optimism, and faith.It was difficult to write those letters, especially without hope of any __17__.Frequently, he felt discouraged, wondering if anyone __18__ read his letters.However, this was his __19__ chance, so he determined to continue. At last, he received a letter from the prison officer, which said, "Please write on the best paper you can afford.Your letters  are passed from cell (小牢房)to cell until they almost fall to __20__!"We all have unique experiences, abilities and talents.We can discover ways to reach others in need of encouragement and strength. | ||||
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