搜索
We do eye exercises. We wear sunglasses.
Ears help us hear the world. But many things, such as loud noises, can cause hearing loss (听力丧失).
Dry your ears with a towel (毛巾) after swimming or taking a bath. If you feel water in your ear, shake (摇晃) your head a little bit. This can help you get the water out of your ear.
Also, when the sun is shining, wear some sunscreen (防晒霜) on your ears. During the winter, protect your ears with a hat or a scarf.
How to clean your ears
Usually our ears clean themselves. The earwax (耳屎) builds up, dries out and then comes out of the ear along with some dirt (污垢). Don’t clean your ears with anything sharp (尖锐), or it can make the earwax go too deep into your ears and hurt them.
How to use headphones
Don’t listen to loud music on your headphones (耳机) for a long time. Follow the 60:60 rule: listen to music at 60 percent of your head phones’ maximum volume (最大音量) for no more than 60 minutes a day.
They do a better job of stopping outside noise so you can listen at a lower volume.
| A．But if your ears start to hurt, you can go to a doctor for help. |
| B．Over-the-ear (头戴式) headphones are better than in-ear ones. |
| C．We do lots of things to protect our eyes. |
| D．We should also protect our ears. |
| E．Keep your ears dry and warm. |
| F．Don’t get the water in your ears. |
| G．Once this happens, it’s hard to get your hearing back. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
