Sometimes people cry when they are sad. Other times people cry tears of joy. But your eyes make tears all the time, whether you are crying or not. Do you know
the tears help keep your eyes healthy? They keep your eyes from drying out. A special area of the eye drips (滴) all the time. It keeps the eye humid.
If you look in a mirror, you can see tiny holes in the corners of your eyes. Each hole leads to a small tube that runs to your nose. Tears run slowly into this tube drip by drip. Day and night the
holes drain (流走) the tears away. If they didn’t, you would always look as if you were crying.
If you begin to cry, there are many more tears. The holes can’t drain all of them. Then extra tears run out onto your face.
Tears help keep eyes safe. If there is something harmful in the air, the eyes fill with tears. These tears coat your eyes. They keep the harmful air out.
Contact lenses (隐形眼镜) can make the eyes too dry. Some people have to add tears to their eyes.
They buy bottles of eye drops to keep their eyes wet.
1.Eyes make tears no matter how people feel.
2.When you cry, tears run into your nose or onto your face.
3.If there is something harmful in the air, tears protect your eyes by covering them.
4.Contact lenses make you have more tears in your eyes.
5.Tears are harmful to your eyes.
— I don’t know tomorrow.
— You can ask our teacher right now.
A. if we take the bus there B. when will we leave
C. what will we do D. how we will go there
— It’s time to work now.
— OK. I’ll wake Carl up. He for an hour.
A. has fallen asleep B. has been asleep C. fell asleep D. falls asleep
As students, we should ourselves. We can’t spend much time playing computer games.
A. be responsible for B. be proud of C. be popular with D. be thankful to
Larry hopes his English, so he keeps practicing it every day.
A. to solve B. solving C. to improve D. improving
Mount Lao is one of mountains in Qingdao. Many tourists like climbing it every year.
A. famous B. the more famous C. most famous D. the most famous
