学进去-教育应平等而普惠
试题
类型:阅读理解
难度系数:0.65
所属科目:初中英语

We do eye exercises. We wear sunglasses. We do lots of things to protect our eyes. But we usually forget another important part of our body—the ears. Ears help us hear the world. But many things, such as loud noises, can hurt our ears, even make us deaf. Once this happens, it’s hard to get your hearing back. March 3rd is Ear Care Day. It reminds us to take care of our ears. So how can we protect our ears? Let’s take a look together.

Keep your ears dry and warm

Dry your ears with a towel (毛巾) after swimming or taking a shower. If you feel water in your ear, shake 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 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. Don’t clean your ears with anything sharp (尖锐的), or it may make the earwax go too deep into your ears and hurt them. But if your ears start to hurt, you can go to a doctor for help.

How to use earphones

Don’t listen to loud music on your earphones for a long time. Follow the “60 Rule”: listen to music for no more than 60 minutes a day. Over-ear (头戴式) headphones are better than in-ear ones. It will do a better job of stopping outside noise. So you can listen at a lower volume.

1.Which of the following ways is bad for your ears?
A.Wearing a hat or a scarf in winter.
B.Shaking your head a lot when water is in the ear.
C.Using a towel to dry your ears after swimming.
2.Which of the following statements is True according to the passage?
A.Our ears can’t clean themselves.
B.We’d better clean ears with doctors’ help.
C.The earwax may come out of the ear with dirt.
3.What does the underlined word Itrefer to?
A.Listening to loud music.B.Wearing over-ear earphones.C.Wearing in-ear earphones.
4.What’s the best title of this passage?
A.Why are ears so important?B.What can hurt our ears?C.How do we take care of our ears?
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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