2006年12月英语六级考试模拟试题(3)

Part ⅡReading Comprehension(35 minutes)来源：来源：来源：来源：来源：来源：来源：来源：来源：来源：来源：来源：来源：www.examda.com
36. Which one is NOT mentioned in this passage that can be the source of carbon dioxide?
A) Oil.B) Trees.C) Wood.D) Soil.
37. The committee report of National Academy of Sciences in Washington reveals that            .
A) ice from Antarctica and Greenland is appropriate to show the change
B) carbon dioxide is released mainly from the fuel
C) level of carbon dioxide increases with global temperatures
D) carbon dioxide is helpful for tree growth
38. According to this passage, those people disagree with the control of carbon dioxide because            .
A) they think that carbon is beneficial for plant growth
B) they want to use more fuels that can emit carbon dioxide
C) they think carbon dioxide is not the main reason for global warming
D) they think it will destroy the natural balance of gases in the world
39. The word “issue” in the last paragraph can be replaced as            .来源：www.examda.com
A) organB) topicC) publicationD) result
40. Those studies carried out in North Carolina suggest that            .
A) trees’ function for absorbing carbon dioxide is limited
B) carbon dioxide is the main cause for global warming
C) leaves falling from trees can emit more oxygen
D) more carbon dioxide is beneficial for trees’growth for many decades