We do eye exercises. We wear sunglasses. We do lots of things to protect our eyes. 【小题1】.

Ears help us hear the world. But many things, such as loud noises, can cause hearing troubles. So how can we protect our ears? 【小题2】.

Keep your ears dry and warm

Dry your ears with a towel (毛巾) after swimming or taking a bath. If you feel water in your ear, shake your head a little bit. 【小题3】. Also in summer, when the sun is shining, wear some sunscreen (防晒霜) on your ears. In winter, protect your ears with a hat or a scarf.

How to clean your ears

【小题4】. The earwax (耳屎) itself comes out of the ear along with some dirt. Don’t clean your ears with anything sharp, or it can 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.

【小题5】

Don’t listen to loud music on your headphones for a long time. Follow the 60:60 rule: listen to music at 60 percent of your headphone’s maximum volume (最大音量) for no more than 60 minutes a day. Over-the-ear headphones are better than in-ear ones. They do a better job of stopping outside noise so you can listen at a lower volume.

Your third year of middle school was probably a tough and busy time. You may have had trouble getting enough sleep. We all know that not getting enough sleep is not good for our health. But it has been found that less sleep could even cause you to have fewer friends, the Guardian reported.

According to researchers from the University of California, people who don’t get enough sleep are less willing to socialize (社交) with others. They are simply too tired to go out.

The researchers did a small study. They tested 18 young people who had just had a good night’s sleep—as well as tested them again after a sleepless night. The participants watched videos of people with neutral (中性的) expressions walking toward them. When the person on the video got too “close” to them, they pushed a button (按钮) to stop the video, which recorded how close they allowed the person to get.

The results showed that the participants kept the person at a distance of 60 percent further back if they hadn’t gotten enough sleep. They felt that their personal space was being invaded (侵占). But when the participants got a good night’s sleep, they allowed the person to get much closer to them.

According to lead (领头的) researcher Matthew Walker, the less sleep you get, the less you want to socialize with others. In turn, other people may think you are weird and stay away from you. This can make you feel lonely and cause you to sleep even less. It becomes a vicious cycle (恶性循环).

So if you want to be a more sociable and popular person, sleeping well might help. “One night of good sleep makes you feel more outgoing and socially confident,” Walker told the Daily Mail.

Beat your sleep problems

Feeling scared and lonely at night

Arrange (布置) your room with your favorite things or family photos. This makes you feel relaxed and peaceful.

Nightmares (噩梦)

Reading a peaceful book or playing soft music can help you have sweeter dreams.

Stress

Talk to your parents. They can help you figure out why you feel stressed out.

From a plane we can see the cities, mountains or seas below. If we go into space, we can see more of the earth.

The sea looks very beautiful when the sun is shining on it. But it can be very terrible when there is a strong wind.

The sea is very big. It nearly covers （覆盖）three quarters of the earth. The sea is also very deep in some places. There is one place and at that place the sea is about 11 kilometers deep. The highest mountain in the world is about 9 kilometers high if we put that mountain into the sea at that place, there would be 2 kilometers of water above it.

In most parts of the sea, there are many kinds of fishes and plants. Some live near top of the sea and others live deep down. There are also a lot of small living things and lots of fishes live by eating them.

The sea can be very cold when people go down the sea. But in 1970, five woman scientists lived in the deep sea for 14 days.