With the development of science and technology, our daily life is becoming more colorful and more convenient .

    Butterflies are common all over the world, but butterflies in hotter countries are usually bigger and more brightly colored than those in cooler countries, and they are more different kinds.

    Usually the male(雄性的)butterflies are more brightly colored than the females. The females have bigger and heavier bodies since they carry the eggs. The bright colors of the males help to attract the females, and the duller(较暗淡的)colors of the females make them less likely(可能的)to be caught by enemies before they have laid their eggs.

    Some butterflies hare bright pattern colors on the upper surface of their wings that show when flying, but when they rest on a tree or leaves, they close their wings. On the undersides of their wings there are green and brown marks which look like the tree or leaves. They are then difficult to be seen. The best example of this is the Dead Leaf Butterfly. When its wings are closed, it looks exactly like a dead leaf. There are even marks that look like the holes in a dead leaf. When the butterfly is run after by a bird, it closes its wings and seems to have disappeared completely.

    Many butterflies have round marks on their wings that look like eyes. The round marks have a useful function(功能). When the butterflies are resting, their wings are closed, and these marks can't be seen. When a bird sees one, and begins to attack it, the butterfly will open its wings. The bird thinks that it sees two eyes staring at it, frightened, and flies away.

Stress is a normal feeling. Everybody will feel it from time to time. Sometimes stress can {#blank#}1{#/blank#} us to move forward. But stress becomes bad {#blank#}2{#/blank#} it affects (影响) our everyday life and health. So how do you know you're stressed out? And what can you do a-bout it?

Sometimes stress {#blank#}3{#/blank#} when you don't realize (意识到) it. Do you often feel a stomachache, a headache, or get angry easily? Do you have trouble sleeping? If your answers are yes, you are {#blank#}4{#/blank#} facing a lot of stress and you may need help.

Talking about your {#blank#}5{#/blank#} with someone always helps. You can have a talk with your parents, friends, teachers or even doctors. Tell {#blank#}6{#/blank#} if you're worried about your schoolwork, or if you have {#blank#}7{#/blank#} relations with your classmates. Then you can come up with a few solutions (解决办法) together like cutting back on after- school activities, spending more time on {#blank#}8{#/blank#}communication, and going for a short holiday.

There's one important thing you need to {#blank#}9{#/blank#}: having some stress is normal. It is OK to feel {#blank#}10{#/blank#}, scared or lonely sometimes. Don't be afraid to ask for help when you're in need.

Plastic pollution is one of the most serious environmental problems all over the world. Many countries are looking for ways to solve the problem. On November 7，2022，China started a"Bamboo instead of Plastic" project with the International Bamboo Organization. It will hopefully reduce plastic pollution. 

Bamboo is a plant of great value，such as cleaning air and preventing soil going away. Unlike trees which usually need a long time to fully grow，bamboo can be put into use in 3 to 5 years. As long as it is protected well

China is one of the countries with plenty of bamboo in the world. The Chinese are a pioneer in the use of bamboo. Zhejiang Province has set up companies to produce and develop bamboo products. Many of them have been sold to over 100 countries. China is also sharing its technology to help India and Japan，the countries which are rich in bamboo. It is hoped that countries around the world will work together for global green development.