Carbon dioxide ______ from burning fuels is the most common of the so-called greenhouse gases.
A: producing
B: having been produced
C: to be produced
D: produced
A: producing
B: having been produced
C: to be produced
D: produced
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
- All the greenhouse gases are produced by industry nowadays.()
- In the last few years thousands of films ______ all over the world. A: have produced B: have been produced C: are producing D: are being produced
- Carbon dioxide, the main greenhouse gas in the atmosphere, comes from all of the following except ________. A: growing plants B: burning trees C: burning fuels D: breathing animals
- According to the passage, Greenhouse gases do NOT include _______. A: carbon dioxide B: methane C: nitrous oxide D: fossil fuels