4.It can be inferred from the last paragraphthat A.clean energy industry and the dotcom industry have the same business model B.the dotcom industry might have undergone a rapid but unsustainable development C.Schwarzenegger has insisted that growth in clean-energy business is sustainable D.global warming has become a popular and decisive issue in political elections 5.What is the author's attitude towards clean-energy business? A.Optimistic B.Enthusiastic C.Objective D.Subjective4. It can be inferred from the last paragraph that . A. clean energy industry and the dotcom industry have the same business model B. the dotcom industry might have undergone a rapid but unsustainable development C. Schwarzenegger has insisted that growth in clean-energy business is sustainable D. global warming has become a popular and decisive issue in political elections 5. What is the author’s attitude towards clean-energy business? A. Optimistic B. Enthusiastic C. Objective D. Subjective