2020年高考英语复习《必修六 Unit 4 Global warming》：语法填空

2020年高考英语复习《必修六Unit 4 Global warming》：语法填空There is no doubt that the earth is becoming 1.warmer (warm) on average.But how has this come about and does it matter? People have fierce debates about whether 2.it is human activity that has caused this global warming，pared (compare) with most of the natural changes.
Many scientists 4.like Dr.Janice Foster believe that people have caused the increase in the earth's temperature 5.by burning fossil fuels like coal，natural gas and oil to produce energy, though some are opposed to this view.Quantities of byproducts of this process are called “greenhouse” gases，the most important one of 6.which is carbon dioxide.More heat energy will 7. be trapped (trap) in the atmosphere 8.causing (cause) the global temperature to go up so long as the increased amount of carbon dioxide are produced.
However，some scientists predict that any warming will be mild with few bad 9.environmental (environment)consequences.Anyhow，even if we start reducing 10.the amount of carbon dioxide and other greenhouse gases，the circumstances are going to keep on warming for decades or centuries.
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