Dr.Jack Todd is very interested in clean water .__1._,so it's natural that he is to developer of a small and affordable system(系统）to clean waste water, His “Living  Machine" can clean wastewater in your home or in your business.

__2._ The wastewater goes into a big plastic tank where bacteria(细菌）start to break down the waste.A few days later after it is dealt with, the water is brought into a greenhouse filled with plants and fish.With the help of sunlight, the plants and animals remove more chemicals from the water,making it cleaner,Then the water can be reused for washing or bathing _3.__ but the water is clean enough for watering the flowing, washing the dog, or even for bathing or swimming.

The advantage of this technology is that it is affordable and good for the environment. __4.__. It can help to use less fresh water, and it can help keep the water supply unpolluted.

DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.

People have been trying to understand the human body for a long time. In 1860, Mr. Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”（基因）in our body. In 1953, two scientists, Watson and Crick, found out that genes are really messages. They’re written in the DNA with a special language.

In 1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell (细胞）to build its parts. So far, scientists have found all the words in the DNA map, but we still don’t understand what they all do. By understanding what just one “word” means, we can help to save people from several illnesses. So the more we understand, the more doctors will be able to do.

Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way. Just to make people more attractive (有吸引力的), or stop sick people getting jobs.

1.When did Mr. Mendel discover why we look the same as other people in our family?

A. In 1680.B. In 1860.C. In 1953.D. In 1961.

2.Watson and Crick found ______ in 1953.

A. all the words in the DNA map

B. small things called “genes” in our body

C. the first “word” they could understand in that language

D. genes are written in the DNA with a special language

3.How can we help sick people if we understand more “words” in the DNA map?

A. Make better medicine.B. Make them get jobs.

C. Make maps for them. D. Make them attractive.

4.Which one is NOT true according to the passage?

A. We look like our parents because of “genes” in our body.

B. We have understood what all the words in the DNA map do.

C. Scientists have found all the words in the DNA map.

D. DNA tells the cell to build its parts.

5.What do people think about this research about DNA?

A. It can be only bad.

B. It can be only good.

C. It can be good but won’t work.

D. It can be good or bad.

When you get up in the morning, do you find it hard to choose what clothes to wear? If so, you probably need help to make the bigger choices in your life, like what to do when you’re older. Brave New Girls, by American author Jean Gade-berg, will help you make such choices. It says you must be a brave new girl. A brave new girl is one who is confident, healthy and happy. A brave new girl can realize her dreams. To be brave, you need to make a decision for yourself. Other people may tell you what to do, but you should not listen to them. You must only do what you want. If you always wear clothes like your favourite TV star, you must stop doing so. Instead, become your own star and wear the clothes you want. You have to like your body, it says. If you don’t, you will not take good care of it, and it won’t stay healthy. The book also says that girls must start becoming more confident. If you are confident, you’ll succeed in life. A good way to become confident is to realize that you are as clever as boys. In fact you are. Just look at their grades! Only then can you realize your dreams and become who you want to be.

1. What quality should a brave new girl have?

A. Confident.         B. Healthy.              C. Happy.               D. A, B and C.

2.Brave New Girls is a ________.

A. film                 B. story       C. book                D. newspaper

3.What’s the best title of the passage?

A. To be brave.                   B. A good book.

C. To be a brave new girl.                   D. Realize dreams.

Who hasn’t enjoyed eating peanuts? Did you know that although peanuts look like nuts and taste like nuts, they aren’t nuts at all? They belong to the pea family, so they are called peanuts. The peanut grows flowers above ground, but its “fruit” grows underground. It grows in more countries than most other “nuts”.
The peanut is a native South American plant. Scientists believe that it grew wild in Brazil long ago. They think that for several thousand years the early peoples of South America made it a part of their diet. These peoples were nomads who moved on when a natural food could no longer be found in one area. Along the way they probably let fall some peanuts, which got into the ground and grew. This is believed to be the way the plant reached the place where the Incas（印加人）lived. The Incas, from about 1100 to 1532, thought highly of peanuts. The peanuts were eaten in several forms and used as sacrificial offerings（祭品）to the Incan Sun God. Later in the 16th century, European soldiers had brought peanuts to other parts of the world, including North America, Africa, Asia, Europe, and Pacific Islands.
Although peanuts were found native in South America, they are now grown in almost every country that has warm weather. India produces the most peanuts. China’s production is next, followed by the United States.
The peanut is special in more ways than one. It can be eaten raw, boiled, roasted, or fried. Hundreds of widely different products have been made from it. Carver, an American scientist, set himself the task of discovering new uses for eating and for many other products.
Peanuts are very highly nutritious and are also high in protein （蛋白质）. Americans use about seven-tenths of their protein in the form of meat. In India, where the poor can’t pay for meat or milk, peanut meal and peanut milk have been produced. These have been a great help to the poor.
New products are continually being made from peanuts, among them peanut cheese and a powder that becomes peanut butter when water is added. The fact is that peanuts are so healthy that they were used by astronauts. The unusual nut that isn’t a nut is one of nature’s most amazing gifts.
【小题1】 Although we like eating peanuts, many of us don’t know peanuts belong to _______ family.