中国大学MOOC: Rubbish not only does harm to soil, water, and air, but also produces nearly four percent of the worlds greenhouse gases.
举一反三
- 33.Do you know what ______ so much greenhouse gases in the air? A: producing B: has produced C: will produce D: produces
- 22. The production of most forms of power produces so-called greenhouse gases that contribute ______ global warming.
- Trees absorb carbon dioxide from the air, which can increase greenhouse gases.
- Answer the following questions according to the passage.Why should we reduce the amount of greenhouse gases that we put into the air?Because the greenhouse gases and make the earth warmer.
- Why should we reduce the amount of greenhouse gases that we put into the air?