The economic situation has been worsening, causing economists to _____whether the present policies are sustainable.

Which of the following behaviors are environmentally sustainable?

Green architecture means sustainable architecture.

Sustainable Energy has two key components: ______ and ______ .

The economic situation has been worsening, causing economics to ______whether the present policies are sustainable.(选词填空contemplate, template)

5. What is the author' s purpose in writing this passage? A: To remind people of the need of sustainable development. B: To suggest ways of ensuring sustainable food production. C: To advertise new criteria for measuring farming progress. D: To urge people to rethink what sustainable agriculture is.

How could rainforest nations achieve sustainable development?

What does Sustainable World Travel intend to preserve?

Smart Home: The Smart Home 8) _______ achieve automated and sustainable living.

Biodiversity protection measurements include legal protection and sustainable management of wild animals. （ ）