Listening to an Ipod, playing loud video games and going to see the movies are harmful to your hearing. ___71____
Block(堵住)，walk and turn—that’s what hearing scientists want you to do when you face a loud noise. Block the noise from entering your ears.    72    And turn it down.
About 15% of all school-age children live with some hearing loss. And it’s a growing problem. _   73  
Block It Out!
74   It starts at zero. Sounds that are too loud or sounds that last too long can harm the inner ear’s hair cells (細(xì)胞)。 Most people don’t  know that listening to headphones at full volume(音量) is harmful. So turn down the volume and protect your ears.
What’s Too Loud?
75   And 60 decibels is totally safe.
A. A 2011 study by Harvard Medical School found that teenage girl have more hearing problems than teenager boys.
B. Your body might try to warn you when a sound is too loud to be safe.
C. Walk away from it.
D. Loud noise can break the inner ear, but we can avoid the noise pollution.
E. the sound unit is decibel(分貝)。

小題1:D
小題2:C
小題3:A
小題4:E
小題5:B 
此題重點(diǎn)考查對(duì)整篇文章的理解，語句的前后連貫性。
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