内容正文:
专题13 阅读理解16篇
(2022上·江苏扬州·七年级统考期末)Crying babies, buzzing mosquitoes (蚊子), ringing car alarms ...They’re all bad noises. But what’s the worst? A recent survey (调查) lists the things we hate to hear.
The list of horrible noises has over 100 items. Mobile phone ringing appears near the top. Other noises include barking dogs, electric leaf blowers, loud snoring (鼾) and banging noises early on a Sunday morning.
However, Top One on the list was the sound of a dentist’s drill (牙医的钻头).” That just sends shivers down my spine,” said one person: “After a visit to the dentist, I sometimes wake up at night with that sound in my head. It’s horrible,” said another. “I’ve seen patients shaking with fear when I bring out the drill,” explained a dentist. Of course, anyone who goes to the dentist and hears the sound will probably agree with that.
But there’s some good news. A new device (装置) developed by experts at universities can reduce the sound of the drill. The small device allows patients to listen to music on an MP3 player without the sound of the drill. However, patients are still able to hear the dentist’s voice because not all sounds are filtered out (被过滤).
The theory behind it is simple. Microphones are placed close to the dental drill. These pick up any sounds and transform them into digital signals. Then, electronic filters reduce any unwanted sound waves. However, the great thing is that this technology also allows other noises (such as the dentist’s voice) to come through.
It’s easy to use, too. Patients simply plug (插) the device into their MP3 players. Then they can listen to music and hear the dentist’s voice without being disturbed by the noise of the drill. Fantastic!
So, next time you go to the dentist, remember to bring your MP3 player.
1.According to the survey, ________ is the first of the list of horrible noises.
A.barking dogs B.electric leaf blowers
C.a dentist’s drill D.a mobile phone ringtone
2.What does the underlined sentence probably mean in Paragraph 3