Green is an important color in nature. It is the color of grass and the leaves on trees. It is the color of most growing plants, too.

Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet finished or plants that are not ripe.

For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns had not yet developed. A century or so later, a greenhorn was a soldier who had not yet had any experience in war (战争) .By the eighteenth century, a greenhorn had the meaning it has today——a person who is new in a job.

About one hundred years ago, greenhorn was a popular expression in the American west Old—timers used it to describe a man who had just arrived from one of the big cities in the east. The greenhorn didn't have the skills that he would need to live in the hard, rough country.

Someone who has the ability to grow plants well is said to have a green thumb. The expression comes from the early nineteen hundred.

A person with a green thumb seems to have a magic touch that makes plants grow quickly and well. You might say that the woman next door has a green thumb if her garden continues to grow long after your plants have died.

The Green Revolution (革命) is the name which was given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural (农业的) scientists who had green thumbs.

Wang Maowei，a 40﹣year﹣old artist is good at making stick puppets （木偶）. 

When he was a little boy，he watched how his parents performed those beautiful puppets，and how interesting those performances were. Gradually

When he was 17，he went to Xi'an，Shanxi Province，he returned to his hometown to work with the same group as his parents did. 

It takes 40 to 50 days to make a stick puppet. The average height of a puppet is 75 centimeters to I meter，and it has different costumes to fit different plays and stories. 

To make puppets，you need to have some basic knowledge of fine arts. The most difficult part is to persist （坚持） because it can be robotic and hard work. Wang was strict with himself. After at least five years of learning from his master，he began to think out new forms. "It is important to keep up with the times and be creative"，he said to himself. 

Wang's puppets are special. He found a special kind of paper to make his puppets. It lets puppet players put gears （机关） inside the puppet heads to make them work—the nose，eyes and mouth of a puppet can all move with the use of one stick. 

With the help of modern technology，his puppets can even perform bianlian，or face﹣changing. To attract more young people

Today was a clear day and I had a great farm trip with my friends.

We got to the farm at nine o'clock. A nice farmer called Uncle Tom welcomed us. Our first stop was the Chicken House. We helped feed(喂) the chickens. The chickens were quite friendly and it was not difficult to feed them at all.

Then Uncle Tom took us to walk around the farm. It was amazing(令人惊讶的) that there were no people but many robots doing the farm work. That was quite different from the farms that I visited before. Soon it was 11:30 and it was time to cook lunch. We were not good at cooking but we all tried our best. We cooked beef and some vegetables. They were not very delicious', but we ate them up.

After lunch, we had a short break and then we went to the Warm House. We picked and ate many big and red strawberries there. My friends took some home to share with their family, but I didn't. Because only I love strawberries in my family.

What a nice day! I think I will go to the farm again.

Hundreds of years ago, life was much harder than it is today. People didn't have modern machines. There was no modern medicine, either.

Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution. It is bad to all living things in the world.

Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick (厚的) that it is like a quilt over a city. This kind of quilt is called smog(烟雾).

Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away(倾倒) and they mustn't blow dirty smoke into the air.

We need to do many other things. We can put waste things in the dustbin and not throw them on the ground. We can go to work by bus or with our friends in the same car. If there are fewer people driving, there will be less pollution.

Rules are not enough. Every person must help to fight pollution.

根据语篇内容，从每小题所给的A、B、C三个选项中选择最佳答案。

The weather in the Northern and Southern Hemispheres(半球) is different. It is fun {#blank#}1{#/blank#} (think) that when it is cold in one place, it is hot in another. The Earth's tilt(地球轴线) is the reason for the different {#blank#}2{#/blank#} (season). This means that while one hemisphere is tilted(倾斜) towards {#blank#}3{#/blank#} Sun, the other is tilted away from it.

{#blank#}4{#/blank#} it's winter in the North, it's summer in the South. Students in the Southern Hemisphere look forward to {#blank#}5{#/blank#}(sperd) summer vacation at the beach, while those in the Northern Hemisphere enjoy building snowmen during {#blank#}6{#/blank#} (they) winter holidays.

There {#blank#}7{#/blank#} (be) holidays in both hemispheres, but the weather makes them different. For example, {#blank#}8{#/blank#} special nights like New Year's Eve, people all over the world get together. Because of the different weather, fireworks might go off over {#blank#}9{#/blank#} (snow) places or near the beach, making each {#blank#}10{#/blank#} (celebrate) special.

So, the Earth's tilt not only gives us different weather but also makes our traditions unique.