【正文】
perature in the last century didn’t seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes she can measure the future global rise in temperature. 4. The rise in carbon dioxide is causing a steady increase in global warming. 5. Gee Hambley believes that global warming will do good rather than harm to the earth. 6. It is clear what the effects of global warming will be. purpose of the first paragraph is to ___. A. introduce the writer B. explain a change C. introduce the topic D. raise a question 2. The graphs are used to _____. A. illustrate points by providing evidence B. tell the change of temperature C. tell the content of carbon dioxide in the air D. interest the readers skimming Reading Comprehension III 3. Greenhou