1 . The problem of global warming has caused a lot of people to try their best to protect the environment. Unluckily, there are still many people who think it is hard to go green. In fact, it is very easy to be green in our daily life.
You can make a great start by learning to recycle (回收利用). While this looks really simple, there are many people who still throw glass bottles into their common garbage. Almost all cities offer a recycling bin (垃圾箱) for these items. If you put them in the recycling bin instead of throwing them away, you will be on the path to save the earth.
One good thing to recycle is newspaper. But there are still some people who just put their newspaper in the garbage when they finish reading it. As we know, there are many other things we can do with an old newspaper. For example, we can use it to clean our windows.
Another thing that could help you to start to live green is to begin walking a bit more. Many people think nothing of getting in their car and driving one mile to get drinks at the local store. If you walk to the store, not only can it take less time, because you won’t have to try to find a parking place, but you will be saving money on gas and helping to protect the environment. If you wish to save even more on gas, take the opportunity to car pool (拼车) each time you can, which has become popular in many countries.
There really are many means by which people can start living green. They only have to make some changes in their lifestyle to improve our environment.
1. What is the main purpose of the first paragraph?| A．To advise people to learn to live green. |
| B．To express worries about global warming. |
| C．To show the importance of living green. |
| D．To tell readers that many people are living green. |
| A．. Driving can cause trouble sometimes. |
| B．Newspaper is being recycled by some people. |
| C．Car pooling is not allowed in some countries |
| D．Many people can’t recycle glass bottles properly. |
| A．Going green is much simpler than we think |
| B．Why do we need to live a green life? |
| C．Global warming is becoming worse |
| D．What is causing global warming? |
The report has been produced by the US Geological Survey. The scientists have publicized their findings in the hope of influencing US Interior Secretary Dirk Kempthorne，who has been asked to put polar bears on the US endangered species list.
Polar bears depend on floating sea ice as a platform for hunting seals，which are their main food. Without enough ice，polar bears would be forced to go onto the land，where they are poorly skilled hunters，and would be unlikely to adapt to the life on the land in time. Experts say few little bears would survive and the stress could make many females unable to get pregnant.
The team of American and Canadian scientists spent six months studying bears，on the ground，from spotter planes and in the lab，using computer models.
Some team members fear the result is even worse for the bears than what their report says. They say the Arctic is warming faster than anywhere in the world and much faster than their computer had been forecasting. Satellite observations have showed that the ice has decreased to an all－time low.
However，not everyone in the scientific community believes that global warming is happening on such an alarming scale. Another investigation has found that polar bears are still being hunted by wealthy “sportsmen” who want their skins and heads. At least ten international companies offer bear－hunting trips.
1. What do we know about Dirk Kempthorne according to the passage?
| A．He is an animal scientist. |
| B．He is a protector of animals working for the US government. |
| C．He was asked to put polar bears on the US endangered species list. |
| D．He offered to put polar bears on the endangered species list. |
| A．Because polar bears can't catch enough food without ice. |
| B．Because polar bears eat ice when they feel thirsty. |
| C．Because polar bears will be easily found by hunters without ice. |
| D．Because most female bears are used to giving birth under ice. |
| A．there is something wrong with their computers |
| B．polar bears will disappear even faster than they ever expected |
| C．their computer models are not as accurate as they expected |
| D．global warming will destroy everything in the Arctic |
| A．The forecast about the future of polar bears is not correct. |
| B．Global warming won't have any effect on hunting trips in the Arctic. |
| C．Polar bears are an endangered species as a result of bear－hunting. |
| D．People don't pay enough attention to the protection of endangered species. |
3 . A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16 ℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover, these areas would reflect more heat into the atmosphere, warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters all over the world.
In the past hundred years, humans have begun destroying rainforests in search of three major resources(资源): land for crops, wood for paper and other products, land for raising farm animals. This action affects the environment as a whole. For example, a lot of carbon dioxide (二氧化碳) in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
There are two main reasons for this. Firstly, when people cut down trees, generally they can only use the land for a year or two. Secondly, cutting large sections of rainforests may provide a good supply of wood right now, but in the long run it actually reduces the world’s wood supply.
Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than l% of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.
1. Rainforests can help to adjust the climate because they .| A．reflect more heat into the atmosphere |
| B．reduce the effect of heat from the sun on the earth |
| C．bring about high rainfall throughout the world |
| D．rarely cause the temperature to drop lower than 16 ℃ |
| A．Humans have begun destroying rainforests. |
| B．People have a strong desire for resources. |
| C．We will lose much more than we can gain. |
| D．Much carbon dioxide comes from burning rainforests. |
| A．Rainforests and the Environment |
| B．How to Save Rainforests |
| C．How to Protect Nature |
| D．Rainforests and Medical Development |
