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C
What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(???) of blood in a man' s body. He can give a pint of blood at a time to
blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo
quickly.
What does our blood do for us? It takes food to all parts of our bodies and takes waste awa
from them. All the parts of our bodies are made up of cells, and these cells, which are very small
all need food all the time.
The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.
What makes the blood go on moving round the body in a stream? The heart sends it round.
man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee
them. It pumps blood in and out through these doors by changing the size of the rooms so that th
doors open and shut.
The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.
49. Blood is the_____
A. red liquid which comes from your finger B. red liquid which we can see
C. red liquid which flows in a man's body D. red cell
50. The blood in a man' s body__________.
A. makes food all the time
B. takes food to all cells in the body and takes waste away
C. supplies the cells with food and oxygen from them
D. takes waste away from the cells
51. __ makes the blood go on moving round the body in a stream.
A. The heart B. The lung C. The cell D. The pump
52. This article tells us about__________.
A. a stream of blood B. the use of the heart
C. a wonderful pump D. something about blood
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people choose to live close together in cities, the waste-disposal problem becomes increasingly difficult.
During the eighteenth century, it was usual for several neighboring towns to get together to select a
faraway spot as a dump site. Residents or trash haulers (垃圾托运者) would transport household
rubbish, rotted wood, and old possessions to the site. Periodically (定期的) some of the trash was
burned and the rest was buried. The unpleasant sights and smells caused no problem because nobody
lived close by.
Factories, mills, and other industrial sites also had waste to be disposed of. Those located on rivers
often just dumped the unwanted remains into the water. Others built huge burners with chimneys to deal
with the problem.
Several facts make these choices unacceptable to modern society. The first problem is space. Dumps, which are now called landfills, are most needed in heavily populated areas. Such areas rarely have empty
land suitable for this purpose. Property is either too expensive or too close to residential neighborhoods.
Long-distance trash hauling(垃圾托运) has been a common practice, but once farm areas are refusing to
accept rubbish from elsewhere. Cheap land within trucking distance of major city area is almost
nonexistent.
Awareness of pollution dangers has resulted in more strict rules of waste disposal. Pollution of rivers,
ground water, land and air is a price people can no longer pay to get rid of waste. The amount of waste,
however, continues to grow.
Recycling efforts have become commonplace, and many towns require their people to take part.
Even the most efficient recycling programs, however, can hope to deal with only about 50 percent of a
city's reusable waste.
B. Waste Pollution Dangers
C. Ways of Getting Rid of Waste
D. Waste Disposal Problem
B. recycling it
C. burning it
D. throwing it into rivers
B. There is a cheap land to bury waste in modern society.
C. It is difficult to fin
d space to bury waste in modern societyD. Ways to deal with waste in modern society stay the same.
B. warn people of the pollution dangers we are facing
C. call on people to take part in recycling programs
D. tell people a better way to get rid of the waste
C
What is blood? It is the red liquid which comes out of your finger when you cut it. There are bout thirteen pints(品脱) of blood in a man' s body. He can give a pint of blood at a time to
blood bank for the use of other men who may need it. A healthy body makes up one pint of bloo
quickly.
What does our blood do for us? It takes food to all parts of our bodies and takes waste awa
from them. All the parts of our bodies are made up of cells, and these cells, which are very small
all need food all the time.
The blood is like a stream. The cells take what they need out of the blood stream, as plants an fishes take their food out of water. The blood stream carries food and oxygen which it has taken up our lungs to all the cells in the body.
What makes the blood go on moving round the body in a stream? The heart sends it round.
man' s heart is about the Size of his fist. The heart is a pump. It has rooms in it with doors betwee
them. It pumps blood in and out through these doors by changing the size of the rooms so that th
doors open and shut.
The heart keeps stream of blood going all round the body and back again to itself. Everywhel the blood stream does two things: supplies the cells with food and oxygen and takes away the waste It is as if the blood kept the little fires in the cells burning and took away the ashes.
49. Blood is the_____
A. red liquid which comes from your finger B. red liquid which we can see
C. red liquid which flows in a man's body D. red cell
50. The blood in a man' s body__________.
A. makes food all the time
B. takes food to all cells in the body and takes waste away
C. supplies the cells with food and oxygen from them
D. takes waste away from the cells
51. __ makes the blood go on moving round the body in a stream.
A. The heart B. The lung C. The cell D. The pump
52. This article tells us about__________.
A. a stream of blood B. the use of the heart
C. a wonderful pump D. something about blood
查看习题详情和答案>>Imagine a mass of floating waste is two times the size of the state of Texas. Texas has a land area of more than 678 000 square kilometers. So it might be difficult to imagine anything twice as big.
All together, this mass of waste flowing in the North Pacific Ocean is known as the Great Pacific Ocean Garbage Patch. It weighs about 3 500 000 tons. The waste includes bags，bottles and containers—plastic products of all kinds.
The eastern part of the Great Pacific Ocean Garbage Patch is about l 600 kilometers west of California. The western part is west of the Hawaiian Islands and east of Japan. The area has been described as a kind of oceanic desert，with light winds and slow moving water currents. The water moves so slow that garbage from all over the world collects there.
In recent years，there have been growing concerns about the floating garbage and its effect on sea creatures and human health. Scientists say thousands of animals get trapped in the floating waste，resulting in death or injury. Even more die from a lack of food or water after swallowing pieces of plastic. The trash can also make animals feel full，lessening their desire to eat or drink.
The floating garbage also can have harmful effects on people. There is an increased threat of infection of disease from polluted waste，and from eating fish that swallowed waste. Divers can also get trapped in the plastic.
Its existence first gained public attention in l997. That was when racing boat captain and oceanographer Charles Moore and his crew sailed into the garbage while returning from a racing event. Five years earlier，another oceanographer learned of the trash after a shipment of rubber duckies got lost at sea. Many of those toys are now part of the Great Pacific Ocean Garbage Patch.
In August，2009，a team from the University of California，San Diego became the latest group to travel to it. They were shocked by the amount of waste they saw. They gathered hundreds of sea creatures and water samples to measure the garbage patch’s effect on ocean environment.
1. How did the writer introduce the topic of the passage?
A. By giving an example.
B. By listing the facts.
C. By telling a story.
D. By giving a comparison.
2.What do we know about the Great Pacific Ocean Garbage Patch?
A. It is made up of various kinds of plastic products.
B. It is a solid mass of floating waste materials.
C. It lies l60 000 kilometers east of California.
D. It is described as a kind of oceanic desert.
3.Why do people pay attention to the Great Pacific Ocean Garbage Patch?
A. Because it may prevent the flow of ocean water.
B. Because the polluted plastic articles will move up the food chain.
C. Because it may be from an island in the pacific.
D. Because ships may be trapped in the floating waste.
4. The purpose of writing this passage is to____________.
A. warn people of the danger to travel in the pacific
B. analyze what caused the waste patch in the pacific
C. give advice on how to recycle waste in the ocean
D. introduce the Great Pacific Ocean Garbage Patch
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When we think about giving help to developing countries, we often think about giving money so that these countries can build schools and hospitals, buy food and medicine, or find clean water supplies. These seem to be the most important basic needs of the people we are trying to help. However, it's far from enough. Ladies and gentlemen, we've got to come up with some better ideas to help them.
I was very surprised, then, when I read about a plan to make cheap laptop computers for children in developing countries. A man called Nicholas Negroponte invented a cheap laptop computer and he planed to produce a lot and sell them to the children in developing countries at a low price after he visited a school in Cambodia. The laptop will be covered in rubber so that it is very strong and won't be damaged easily. The idea is that these computers will help the children's education as they will be able to surf the Internet. By improving children's education they should help people to find their own solutions to their problems in the long term.
Another idea to help children in developing countries is to recycle old mobile phones so that they can be used again. In the UK, and probably in many other countries too, millions of mobile phones are thrown away every year. The waste created by throwing away these old phones is very bad for the environment, so it seems to be an excellent idea to recycle them. In this way we will be able to achieve two important goals at the same time. We will reduce the waste we produce and help others. In other words, we will be able to 'kill two birds with one stone’, and that is always a good thing.
【小题1】It's an excellent idea to recycle old mobile phones because .
| A．it reduces waste and can help others |
| B．it prevents waste and can earn lots of money |
| C．it can send the waste produced by developed countries to other countries |
| D．it is good for the environment and very educative for phone users |
| A．to show what high technology can bring us |
| B．to show the kindness of people in the developed countries |
| C．to show how to find business opportunities in developing countries |
| D．to give an example of how to help developing countries |
| A．A newspaper. | B．A magazine. |
| C．A lecture. | D．An advertisement. |