Human cloning(克隆)technology could be used to reverse heart attacks. Scientists believe that they may be able to treat heart attack victims by cloning their healthy heart cells and injecting them into the areas of the heart that have been damaged, and other problems may be solved if human cloning and its technology are not forbidden. With cloning, infertile couples could have children. Current treatments for infertility, in terms of percentages(百分比), are not very successful. Couples go through physically and emotionally painful procedures for a small chance of having children. Many couples run out of time and money without successfully having children. Human cloning could make it possible for many more infertile couples to have children than ever before. We should be able to clone the bone marrow(骨髓)for children and adults suffering from leukemia(白血病). It is expected to be one of the first benefits to come from cloning technology. We may learn how to switch cells on and off through cloning and thus be able to cure cancer. Cloning technology can be used to test for and perhaps cure gene-related diseases. The above are just a few examples of what human cloning technology can do for mankind. This new technology promises unprecedented advancement in medicine if people will release their fears and let the benefits begin.

The newest satellite can ______ a thousand telephone conversations and a color TV program at the same time. carry extend bring take

He is______a writer as a reporter. more rather not so much not much

When Mr. Jones gets old, he will______over his business to his son. take hand think get

The fireman managed to______the fire in time. extinguish prevent stop ruin

Peter as well as his friends______to music. like to listen likes to listen likes to hear like listening

Only by reading extensively______your horizons. you will widen can you widen you may widen therefore you widen

If he had been in better health, he______more books. can write could have written could write have written

If you______that night, you might have been too late to get your ticket. didn’t hurry hadn’ t hurried wouldn’ t hurry hadn’ t to hurry

The terrorists______to blow up the plane if their demands were not met. pretended determined threatened proceeded

My friends______us into going swimming. persuaded told invited suggested

Our public transportation system is not ______ for the needs of the people. We need more buses and subways. complete adequate normal good

A sustainable transportation system is one that is safe, capable and friendly to the environment. Sustainable transportation is about combining economic, social and environmental factors into decisions that affect transportation activity. In economic aspect, we need a transportation system that is efficient. In social aspect, our transportation system must be safe and easy to be reached. In addition , we need a transportation system that respects the natural environment. It is not always easy to balance these three factors but there are also win-win-win opportunities. Sustainable transportation is important. Although transportation brings many economic and social benefits, the movement of people and goods can have important influences on the environment. These influences can in turn have social and economic consequences. Sustainable transportation calls for ensuring that the environment is considered along with economic and social considerations in transportation decision-making. Environmental influences of transportation include air and water pollution, greenhouse effects, and the use of land and other natural resources. A range of transportation activities contribute to these pressures, including the construction of roads; the production, operation, and throwing away of vehicles; and the supply of energy and fuel. A major challenge of sustainable transportation is to control or prevent air pollution and greenhouse effects.

Water is necessary for life and good health. We often forget this fact when we think about the other building blocks of life such as vitamins, minerals and proteins. We can live for many days without eating, but two or three days without water usually leads to death. The human body may look solid, but most of it is water. Newborn babies are as much as 85% water. Women are about 65% water and men about 75% . Women usually have less water than men because women, in general, have more fat cells, and fat cells hold less water than other kinds of cells. Water is necessary for cooling the body under hot weather and when we are working hard or exercising, water carries body heat to the surface of the skin, where the heat is lost through perspiration. Researchers note that fat cells block body heat from escaping quickly. Fat cells under the skin act like warm clothing to keep body heat inside. This is why overweight people have a more easy time staying cool than thin people. Researchers also note that cool liquids cool us faster than warm liquids, because cold liquids take up more heat inside the body and carry it away faster. They say, however, that cold sweet drinks do not work well because the sugar slows the liquid from getting into the blood stream. The body loses water every day through perspiration and urine. If we lose too much, we will become sick. To replace what is lost, health experts say grown persons should drink about 2 liters of liquids each day, and more in hot weather. They say we can also get some of the water we need in the foods we eat. Most fruits and vegetables are more than 80% water. And even bread is about 33% water.

People have been fond of roses since the beginning of time. In fact, it is said that the wise and knowing Confucius had a 600-book library specifically on how to care for roses. The rose is a legend on its own. The story goes that during the Roman Empire, there was a beautiful girl named Rhodanthe. Her beauty drew many suitors(求婚者). Exhausted by their pursuit, Rhodanthe was forced to hide in the temple of her friend Diana to stay away from her suitors. Unfortunately, Diana became jealous. And when the suitors broke down her temple gates to get near their beloved Rhodanthe, she became angry, turning Rhodanthe into a rose and her suitors into thorns. In Greek legend, the rose was created by Chloris, the Greek goddess of flowers. It was just a lifeless seed that Chloris found one day in a clearing in the woods. She asked Aphrodite, the goddess of love, to give her beauty, Dionysus, the god of wine, to give her a sweet scent(气味), and the three Graces to give her charm, brightness and joy. Then Zephyr, the West Wind, blew away the clouds so that Apollo, the sun god, could shine and make this flower blossom. And so the rose was born and was immediately called the Queen of Flowers. The first true primary red rose seen in Europe was introduced in 1792 from China, where it had been growing wild in the mountains. Immediately, rose breeders began using it to make a hybrid(杂交品种). Absolute perfection still hasn’t been gained, and of course never will! There is a special rose language invented as a secret means of communication between lovers who were not allowed to express their love for one another openly. In the mid-18th century the wife of the British ambassador in Constantinople described this in her letters, which were published after her death. These letters inspired many books on the language of flowers, each describing the secret message hidden in each flower. A red rose bud(花蕾)stands for secret affection, an open white rose asks “Will you love me?“ , an open red rose means “I’m full of love and desire“ , while an open yellow rose asks “Don’t you love me anymore?“

______you are familiar with the author’ s ideas, try reading all the sections as quickly as you possibly can. As long as Ever sihce So that Now that

I will never forget ______you for the first time. to meet to have meet meeting having to be meeting

Before the first non-stop flight made in 1949, it______ necessary for all planes to land for refueling. would be has been had been would have been

They were enjoying themselves. ______, they appeared to be enjoying themselves. However Or rather Further more As a result

______by the hero’ s example, the soldiers fought more bravely. Inspiring Inspired Moving To be moved

He has so many inventions that he is really______Edison of______ Japan. an; the an; / the; the the; /

Heart attacks can be treated with human cloning technology by______.

The word “infertile“(Line 1, Para. 2)most probably means “______“.

Paragraph Two implies that in treating infertility, ______.

The following are all examples of the benefits from the cloning technology EXCEPT______.

According to the writer, the main problem with the development of human cloning technology is that ______.