Climate change, once just a guess by people, now has become reality.
举一反三
- The clause in the sentence “What was once regarded as impossible has now become a reality” is ___________. A: the appositive clause B: the object clause C: the subject clause D: the attributive clause
- _____________ and _____________ have become so pressing that more and more people have come to see the severe consequences of them. A: Emisson of CO2 and Ozone Depletion B: Global warming and climate change
- Fitness has now become an important (element) in our lives.
- DDT was once used as a pesticide to permanently obliterate all insects. Now, DDT has become ineffective and is no longer used as a pesticide. Why were the populations of insects able to survive applications of DDT?
- These crops are extremely ______ to climate change, which has been a tricky problem for the local farmers.