When we think of paper, we think of newspapers and books. 【小题1】

Only half of the world’s paper is used for books and newspapers.

【小题2】 You have perhaps seen homeless men sleep on a large number of newspapers. In Finland (芬兰), it is sometimes -40℃ in winter. The farmers wear paper boots (靴子) in the snow. Nothing could be warmer.

Each year, more and more things are made of paper. We have had paper cups and plates for a long time. But now we hear that chairs, tables, and even beds can be made of paper. You can wear paper hats, paper dresses, and paper raincoats. 【小题3】

The latest use of paper seems to be paper houses. 【小题4】 but real, big houses for people to live in. You can buy a house with three rooms for about 500 dollars. It’s very cheap. 【小题5】 and you can use it for about five years.

Did you know that the black widow spider is one of the most poisonous spiders in the world? But only the females can hurt you. 【小题1】 The female’s poison(毒) is much stronger than that of a rattlesnake. A person who has been bitten can die if he or she does not get treatment.

The female black widow is about 0. 5 inch long. She is black and has red marks on her belly. 【小题2】 The male is 1/3 of the female’s size. He doesn’t have any red marks.

Let’s observe one black widow female. When we first see her, she is hanging upside down on her web. 【小题3】 Her skin becomes smaller, then she sheds it. She grows a new, larger skin. This is called molting, and it happens about eight times during her life.

One day a male black widow comes to the edge of the female’s web. He strums on the web. 【小题4】 If not, she may chase and eat him. It is unsafe to be a male black widow.

After mating, the female weaves a small silk sac. This is where she will lay from 250 to 750 eggs. 【小题5】 The female guards the egg sac for about a month. Then baby spiders, or spider lings, hatch. The spider-lings are small and helpless when they come out of the egg sac. Many are eaten by birds or insects. Some are even eaten by their mother. Most, however, live and become adults.

Do you have enough sleep? With so much homework to do, it’s often difficult to get the rest you need. But you need to try, because sleep keeps you healthy and it stops you getting fat.

Recently, a group of US scientists did a study among some kids between8 and 13 years old. The study found that if kids sleep for just one more hour each day, the chance of their getting fat is cut by about 30 percent.

Why? When people don’t get enough sleep, they become tired. When they are tired, they don’t exercise enough. Also, kids like snacks. If they are awake one or two more hours each day, they have more time to eat snacks or other unhealthy foods.

So, how much sleep should kids get? Scientists say it is better to sleep 10 to 11 hours a night for kids of 5 to 12 years old. For older kids, eight to nine hours will do. (160 words)