1. Introductory Remarks

2. Integrated Structure and Questions for Discussion

3. Detailed Study of the Text

Paraphrase the following sentences.

1. Which means we are silencing thousands of songs we have never even heard.

2. So far, however, we seem oblivious of the fragility of the earth’s natural system.

Key:

1. Since miles of forests are being destroyed and the habitat for these rare birds no longer exists, thousands of birds which we have not even had a chance to see will become extinct.

2. Up until now, we seem to be unaware of the fact that the earth’s natural systems are very delicate and can easily be disrupted.

Read the following passage and then answer the questions

1. What are the evidences of climate change mentioned here?

2. Which area does the map mainly indicate?

Explore the signs of global warming on this map or Google Earth. The evidence of climate change includes heat waves, sea-level rise, flooding, melting glaciers, earlier spring arrival, coral reef bleaching, and the spread of disease.

The greatest concentration of global warming indicators on the map is in North America and Europe because that is where most scientific investigation has been done to date. As scientists focus increasingly on fingerprints of global warming in other regions—from Russia to Antarctica and Oceania to South America—the evidence they find will be added to the map.

Scientists project that unless emissions of heat-trapping gases are brought under control, the impacts of climate change are likely to increase.

Key:

1. Heat waves, sea-level rise, flooding, melting glaciers, earlier spring arrival, coral reef bleaching, and the spread of disease.

2. North America and Europe

Global Warming

链接： http://www.global-warming.co/