There was a man. He had four sons. He wanted his sons to learn not to judge things too quickly. So he sent them each on a quest(探索)in turn, to go and look at a pear tree that was far away. The first son went in the winter, the second in the spring, the third in the summer, the youngest son in the fall. When they had all gone and come back, he called them together to describe what they had seen. The first son said that the tree was ugly ,bent and weak. The second son said no---it was covered with green buds and full of promise. The third son said it was laden with blossoms and they smelt so sweet and looked so beautiful. The last son disagreed with all of them. He said it was ripe and drooping(下垂 )with fruit, full of life and fulfillment.. The man then said to his sons that they were all right, because they each had seen but only one season in the tree’s life. He told them that they cannot judge a tree or a person, by only one season, and that the essence(本质) of who they are---- the pleasure, the joy and love that come from that life---can only be measured at the end (盖棺论定),when all the seasons are up.    If you give up when it is in winter, you will miss the promise of your spring, the beauty of your summer, the fulfillment of your fall. Don’t let the pain of one destroy the joy of all the rest.
小题1:Why did the man sent his sons each on a quest?
小题2:When did the fourth son go?
小题3:What did the third son say when they came back?
小题4: Did the man agree with all of his sons?
小题5:Which season will you miss If you give up when it is in winter?
Scientists said that in the past 100 years, as the global(全球的) temperatures went up by 0.74℃, the temperature in North China has climbed 1.4℃ in only 50 years.
China needs to cut down carbon dioxide(二氧化碳) emission(排放),because it’s the main reason for global warming. The good news is that China has seen the importance of going green. China has decided to cut energy use down by 20% and pollution emission by 10% in the 11th Five-Year Plan.
Can you slow down global warming? Sure! You and your family can take some steps.
Here are some pieces of advice to help you save the earth.
Wear used clothes. It means that you save the energy when you wear your brother’s, sister’s or dad’s old T-shirts.
Change your light bulbs(灯泡). Use energy-saving light bulbs. And don’t forget to turn off the lights when you leave a room and turn off your television and computer when they are not in use!
Take a bus. Taking a bus saves a lot of oil(石油) every year.
Say no to plastic bags. The next time your parents go to the market, ask them to use baskets. Open the windows. Don’t use the air conditioner(空调). Let some fresh air in. When you have to use the conditioner,setthetemperature higher in summer and lower in winter to save energy.
The main  小题1:for global warming
Too much carbon dioxide in the air.
小题2: to save the earth.
1. Wear 小题3:  clothes.
2. Use energy-saving light bulbs and  小题4:
to turn off the lights and your television or computer when you don’t need them.
3. Take a bus.
4. Use baskets instead of plastic bags when you or your family go 小题5:
5. Try to use the air conditioner less.
We know that many animals do not stay in one place . Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food easily, but others move to get away from places that are too crowed.
When cold weather comes, many birds move to warmer places to find food. Some fish give birth in warm water and move to cold water to feed. The most famous migration(迁移) of the fish, which is called “salmon(大马哈)”. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowed. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.
Recently, scientists have studied the migration of a kind of lobster(龙虾). Every year, when the season of bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.
So, sometimes we know why humans and animals move from one place to another, but at others times we don’t. Maybe living things just like to travel.
Migrations
Some birds
小题1:_______ when cold weather comes
Some fish
Give birth in小题2:______and move to ______ to feed
A kind of mouse
小题3:________ when they become too crowed.
小题4:_________
Walk across the floor of the ocean when the season of 小题5: _______

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