题目内容
According to the passage, what is the main cause of preventable hearing loss？
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How many people's life can be saved by making the environmental conditions healthier？
听力原文： (14)We've become alarmed over the health center by the number of students who are experiencing hearing loss. First, I want to go over some basics about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing. (16) The leading cause of preventable hearing loss is excessive noise. Too much moderate noise for a long time or some types of intense noise for even a short time can damage hearing. Loudness is measured by decibels. One decibel is the lowest sound the average person can hear. Sounds up to 80 decibels generally aren't harmful. That's noise like traffic on a busy street. But anything louder than 80 decibels may hurt your hearing. (15) Once you are up to 140 decibels, that's like a jet plane taking off, then you might even feel pain in your ears. Those are sure sign that your hearing's at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is limit your exposure to harmful levels. If you pass along this handout, we can take a look at the decibel level of some common campus sounds. Notice how loud those horns are that people take to football games. They are really dangerous if blown right behind you.
What is this passage talking about？
听力原文：W: So, how are things going, Steve？
M: Well, to be honest, Carla, I was feeling great on Saturday, but I started to feel sick Sunday afternoon. I thought I'd get better, but I feel worse than before. [5] And I'm really worried because I'm scheduled to give a presentation at work on Friday,so I have to be better by, then,
W: Well, what seems to be the problem？
M: Well, I thought I had the flu, but the doctor said it was just a bad cold. He gave me some medicine to take care of my stuffy nose and fever. [4] I'm supposed to take the medicine three times a day after eating, but it doesn't seem to help. [4] He also told me to stay off my feet for a day or so, but I'm so busy these days.
W: Listen! Forget about that medicine! I have just the thing to get rid of bad colds. You see, my mom is really into herbal medicine,
M: Oh, no, thanks.
W: Ah, come on! Give it a try. You just take some of my mom's herbal tea and drink it four times a day. Believe me. You'll be up and dancing around in no time.
M: Dancing around in no time, right？ [6] Well, I guess. Nothing else seems to be doing the job.
W: Great. I'll come by your place at 7:30. See you then.
The doctor asked Steve to
听力原文： (24) The Reserve Bank of Australia said yesterday that it would cut official interest rates by 0.5 percentage points to around 7.0 percent, following falls in inflation and in an attempt to help buoy the economy.
(25) The cut is the first change in rates since December 1994, when the bank increased rates to slow the economy, but the bank warned it would lift rates again if wages grew too fast.
"The Bank's forecasts suggest that both underlying and headline inflation will be in the 2.3 percent range for some time," the central bank's governor, Bernie Fraser said, adding that wages and salaries would be the key influence on inflation.
What were the official interest rates before the Reserve Bank of Australia announced a cut？
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