Ⅰ.用适当的介、副词填空
1．That probably does not seem much ________ you or me，but it is a rapid increase when compared ________ other natural changes.
2．So how has this come ________ and does it matter?
3．All scientists subscribe ________ the view that the increase ________ the earth’s temperature is due ________ the burning ________ fossil fuels ________ coal，natural gas and oil to produce energy.
4．The problem begins when we add huge quantities ________ extra carbon dioxide into the atmosphere.
5．We know that the levels ________ carbon dioxide have increased greatly over the last 100 ________ 150 years.
6．He found that between these years the carbon dioxide ________ the atmosphere went ________ from around 315 parts ________ around 370 parts per million.
7．They also agree that it is the burning of more and more fossil fuels that has resulted ________ this increase in carbon dioxide.
8．However，the attitudes of scientists ________ this rise are completely different.
9．________ the one hand，Dr.Foster thinks that the trend which increases the temperature by 5 degrees would be catastrophe.
10．________ the other hand，there are those，like George Hambley，who are opposed ________ this view and believe that we should not worry ________ high levels of carbon dioxide ________ the air.
